- redpine signals · i2c_sda pspi_csn0 mm8430 title size document number rev date: sheet of...

Redpine Signals, Inc. Proprietary and Confidential

RS9110-N-11-03

MMoodduullee IInntteeggrraattiioonn GGuuiiddee

VVeerrssiioonn 33..00

November, 2012

Redpine Signals, Inc. 2107 N. First Street, #680

San Jose, CA 95131. Tel: (408) 748-3385 Fax: (408) 705-2019

Email: [email protected]

Website: www.redpinesignals.com

mailto:[email protected]

http://www.redpinesignals.com/

Redpine Signals Inc. Proprietary and Confidential

RRSS99111100--NN--1111--0033



About this Document

The RS9110-N-11-03 is a dual-band 802.11n single-stream module with built-in MAC/BBP, RF and PA, and front-end components. It interfaces to a host processor through an SDIO or SPI interface. This document provides information that may be used while integrating the module into an end solution.


RRSS99111100--NN--1111--0033



Table Of Contents

1 Reference Schematics .......................................................... 5 1.1 SDIO Interface Integration ................................................. 5 1.2 SPI Interface Integration .................................................... 7

2 Bill of Materials .................................................................... 9 2.1 SDIO Interface ................................................................... 9 2.2 SPI Interface .....................................................................10

3 Recommended RS9110-N-11-03 PCB Landing Pattern ....... 13

4 Circuit and Layout Guidelines ............................................ 14

5 Chip Antenna Layout Recommendations ............................ 15 5.1 Antenna Matching Network ................................................16

6 Reference Oscillator Specifications .................................... 18 6.1 List of Recommended Crystal Oscillators ............................19

7 Recommended Specifications for Schottky Diode .............. 20 7.1 Recommended Parts ..........................................................20

8 Sample Layout ................................................................... 21 8.1 Top Layer ..........................................................................21 8.2 Layer 2 ..............................................................................21 8.3 Layer 3 ..............................................................................22 8.4 Bottom Layer .....................................................................22 8.5 Component Placement .......................................................22


This page is intentionally left blank.


RRSS99111100--NN--1111--0033



1 Reference Schematics The following is a reference circuit schematic of an Evaluation Board using the RS9110- N-11-03 WLAN module. The schematics show both SDIO and SPI host interface options. The layout corresponding to this schematic is also shown in this document as a reference.

1.1 SDIO Interface Integration

Figure 1 SDIO Interface Integration

RESET_n C6 0.1uF

R6 100K RESET Circuitry

VDD_EXT LED _ON D1 LED LED Indication

R7 820E

VIN33

R31** value should be adjust ed based on driver output impedance and PCB Trace Impedance,,(33E is Nominal) Note:

SDIO_DATA1 SDIO_CLK SDIO_DATA0 SDIO_DATA3 SDIO_CMD SDIO_DATA2

CD/DAT3 1 CMD 2

VSS1 3 VDD 4

CLK 5 VSS2 6

DAT0 7 DAT1 8

DAT2 9 J3

SDIO Interface Connector

VIN33 R31** C7

10uF

Microwave switch is used for evaluating the standalone Transmit/Receive performance of the WLAN module by providing direct connectivity to Signal generator/Analyzer through RF cable

SDIO_C LK SDIO_C LK SDIO_C LK SDIO_C LK

PSPI_MISO PSPI_CSN 1 PSPI_CLK PSPI_MOSI

VDD_EXT

SPI Serial Flash

CE# 1 SCK 6 SI 5 SO 2 VDD 8 HOLD 7 WP# 3 VSS 4 U3

SST25VF016B-75-4I-QAF-T

VDD_EXT

R8 4.7K

OPTIONAL

C8 0.1uF

CMS02 D2

C12 0.1uF

VDD_EXT

1 1 2 2 FB4

BEAD

C9 1uF

VIN33

1 1 2 2 FB2

BEAD

C15 10uF

L1 4.7uH

VMOD

Power Supply Filter Section VRF33

DVDD33

C11 0.1uF

Tantal um

Tantal um

1 1 2 2 FB3

BEAD

1 1 2 2 FB5

BEAD

C10 100uF(CASE B)

C14 0.1uF C13

100uF(CASE B) NOTE::If required C10 can be increased further to check if the Transmit EVM is getting better. As a second option shorting the Bead FB3 can also be tried for improving the Transmit EVM.

R4 1K

R5 1K

R3 1K

UART2_IN PSPI_CLK PSPI_MOSI PSPI_MISO PSPI_CSN 1 RESET_n RESET_n

Rev7.0 Ver7.0

VMOD XTAL_EN

CLK_REF CLK_REF

C4 10uF

Redpine Signals Confidential

SDIO_D ATA0/SPI_M OSI 56 SDIO_D ATA1/SPI_MISO 57 SDIO_C LK/SPI_CLK 58

GND 29

GND 1

DVDD33 17

VRF33 40

VINBC KDC 24

SLEEP_CLK_X1 51

XTAL_EN 23

I2C _SD A

14

GND 46 PSPI_MOSI

36 PSPI_MISO

35

UART1_CTS

6

UART2_OU T

7

GND 30

RF_OUT2 25

I2C _SC L

15

UART2_IN 41

VOUTBCKDC 1P3 32

PSPI_CSN 0 28

FBDC1P3 33

GPIO_1 53

LED _ON 42

RESET_N 43

REF_C LK 44

TDO 13

TDI 12

TMS 11

TCK 10

UART1_OU T

9

UART1_IN

8

HOST_WAKEU P_INT 55

GND 16

GND 27

VRF33 39

NC 31

VIN LDOP123 38

PSPI_CSN 1 37

BT_ACTIVE 22 BT_PRIORITY 21

NC 18 SLEEP_CLK_IN 19 SDIO_D ATA2/SPI_INTR

2

SDIO_D ATA3/SD3

3

SDIO_CMD/SPI_C S

4

UART1_RTS

5

XTAL_IP_EN 54 RF_OUT1 26

PSPI_CLK 34

WLAN _ACTIVE 20

LDO28 47

GND 45

SLEEP_CLK_X2 50 MODE_SEL_0 49 MODE_SEL_1 48

GND 52

U2

RS9110-N-11-03 Pin Diagram

VRF33

BT_PRIORITY

NC

UART1_CTS UART1_RTS

LED _ON

BT_ACTIVE WLAN _ACTIVE

I2C _SC L

GPIO_1

UART2_OU T UART1_IN

802.11abgn WLAN Module

SLEEP_CLK_X1

HOST_WAKEU P_INT

SDIO_D ATA2

C3 0.1uF

I2C _SD A

PSPI_CSN 0

Title Size Document N umber Rev Date: Sheet of

RS9110-N-11-03 SDIO - Reference Schematics Custom

2 2 Tuesday, October 30, 2012

SLEEP_CLK_X2

SDIO_CMD TDO

SDIO_D ATA0

DVDD33

UART1_OU T SDIO_D ATA3

XTAL_EN _IP Place Z1-Z3 Close together and near to ANT1

Microwave coaxial connector with switch

Z1 , Z2, Z3 form the tuning network for matching the impedance of the Antenna. The values depend upon the layout. In case tuning network is not implemented Z1 should be placed as 8.2pF as default

Z1 TBD

Mating Connector Part No::MXHS83QH3000

Tuning Network

Z3 TBD Z2

TBD ANT1 1

ANT2 2 ANT1

50 Ohm RF line

RF Out Circuitry

ANTIN 3 ANTOUT 4

GND 1

GND 2

GND 5

GND 6

J1

MM8430-2610RA1

C2 8.2pF

VRF28

SDIO_D ATA1

1 1 2 2 FB6(N P)

BEAD VDD_EXT

CLK_REF OE 1

GND 2 OUT 3

VDD 4 U1

7C40000192 Make:: TXC C1

2.2uF

XTAL_EN XTAL_EN XTAL_EN XTAL_EN R1 33E

VRF28 1 1 2 2 FB1

BEAD

NOTE:: Default : Mount FB1 & Do Not Mount FB6. If VDD_EXT is used Mount FB6 & Do Not Mount FB1.

Reference Clock Circuitry

R9 51E


RRSS99111100--NN--1111--0033



NOTE: Pull up resistors should be present on SDIO_CMD & SDIO_Data lines according to the section 6.6.5 of SD physical layer specification, version 2.00


RRSS99111100--NN--1111--0033



1.2 SPI Interface Integration

Figure 2 SPI Interface Integration

RESET_n C6 0.1uF

R6 100K

VDD_EXT LED_ON D1 LED LED Indication

R7 820E

VIN33

R31** value should be adjusted based on driver output impedance and PCB Trace Impedance,,(33E is Nominal) Note:

SPI_MISO SPI_CLK SPI_MOSI SD3 SPI_CS

SPI_INTR CD/DAT3 1

CMD 2 VSS1 3

VDD 4 CLK 5

VSS2 6 DAT0 7

DAT1 8 DAT2 9 J3

SPI Interface Connector

VIN33 R31** C7

10uF

FROM HOST FROM HOST

Microwave switch is used for evaluating the standalone Transmit/Receive performance of the WLAN module by providing direct connectivity to Signal generator/Analyzer through RF cable

RESET Circuitry OPTIONAL

C12 0.1uF

VDD_EXT

1 1 2 2 FB4

BEAD

C9 1uF VIN33

1 1 2 2 FB2

BEAD

C15 10uF

L1 4.7uH

VMOD

Power Supply Filter Section VRF33

DVDD33

C11 0.1uF

Tantalum

Tantalum

1 1 2 2 FB3

BEAD

1 1 2 2 FB5 BEAD

C10 100uF(CASE B)

C14 0.1uF C13

100uF(CASE B)

R2 3.9K to 4.75K

R4 1K

R5 1K

R3 1K

NOTE::If required C10 can be increased further to check if the Transmit EVM is getting better. As a second option shorting the Bead FB3 can also be tried for improving the Transmit EVM.

For DEBUG Purpose

UART2_IN PSPI_CLK PSPI_MOSI PSPI_MISO PSPI_CSN1 RESET_n RESET_n RESET_n RESET_n

Rev7.0 Ver7.0

VMOD XTAL_EN

CLK_REF CLK_REF

C4 10uF

Redpine Signals Confidential

VRF33

BT_PRIORITY

NC

UART1_CTS UART1_RTS

LED_ON

BT_ACTIVE

WLAN_ACTIVE

I2C_SCL

GPIO_1

UART2_OUT UART1_IN

802.11abgn WLAN Module

SLEEP_CLK_X1

HOST_WAKEUP_INT

SPI_INTR

C3 0.1uF

I2C_SDA

PSPI_CSN0

Title Size Document Number Rev Date: Sheet of

RS9110-N-11-03 SPI- Reference Schematics Custom

2 2 Tuesday, October 30, 2012

SPI_CLK

SLEEP_CLK_X2

SPI_CS TDO

SPI_MOSI SDIO_DATA0/SPI_MOSI 56 SDIO_DATA1/SPI_MISO 57 SDIO_CLK/SPI_CLK 58

GND 29

GND 1

DVDD33 17

VRF33 40

VINBCKDC 24

SLEEP_CLK_X1 51

XTAL_EN 23

I2C_SDA

14

GND 46 PSPI_MOSI

36 PSPI_MISO

35

UART1_CTS

6

UART2_OUT

7

GND 30

RF_OUT2 25

I2C_SCL

15

UART2_IN 41

VOUTBCKDC1P3 32

PSPI_CSN0 28

FBDC1P3 33

GPIO_1 53

LED_ON 42

RESET_N 43

REF_CLK 44

TDO 13

TDI 12

TMS 11

TCK 10

UART1_OUT

9

UART1_IN

8

HOST_WAKEUP_INT 55

GND 16

GND 27

VRF33 39

NC 31

VINLDOP123 38

PSPI_CSN1 37

BT_ACTIVE 22 BT_PRIORITY 21

NC 18 SLEEP_CLK_IN 19 SDIO_DATA2/SPI_INTR

2

SDIO_DATA3/SD3

3

SDIO_CMD/SPI_CS

4

UART1_RTS

5

XTAL_IP_EN 54 RF_OUT1 26

PSPI_CLK 34

WLAN_ACTIVE 20

LDO28 47

GND 45

SLEEP_CLK_X2 50 MODE_SEL_0 49 MODE_SEL_1 48

GND 52

U2

RS9110-N-11-03 Pin Diagram

DVDD33

CMS02 D2

UART1_OUT

SD3

XTAL_EN_IP Place Z1-Z3 Close together and near to ANT1

Microwave coaxial connector with switch

Z1 , Z2, Z3 form the tuning network for matching the impedance of the Antenna. The values depend upon the layout. In case tuning network is not implemented Z1 should be placed as 8.2pF as default

Z3 TBD

Mating Connector Part No::MXHS83QH3000

Tuning Network

Z1 TBD Z2

TBD ANT1 1

ANT2 2 ANT1

50 Ohm RF line

RF Out Circuitry

ANTIN 3 ANTOUT 4

GND 1

GND 2

GND 5

GND 6

J1

MM8430-2610RA1

C2 8.2pF

VRF28

SPI_MISO

R9 51E

1 1 2 2 FB6(NP) BEAD

CLK_REF

Make:: TXC VDD_EXT

OE 1 GND 2 OUT 3

VDD 4

U1

7C40000192

XTAL_EN XTAL_EN XTAL_EN XTAL_EN

C1 2.2uF

VRF28 R1 33E

NOTE:: Default : Mount FB1 & Do Not Mount FB6. If VDD_EXT is used Mount FB6 & Do Not Mount FB1.

Reference Clock Circuitry

1 1 2 2 FB1 BEAD

PSPI_CSN1 PSPI_CLK PSPI_MOSI PSPI_MISO VDD_EXT

SPI Serial Flash

CE# 1 SCK 6 SI 5 SO 2 VDD 8 HOLD 7 WP# 3 VSS 4 U3

SST25VF016B-75-4I-QAF-T

VDD_EXT

R8 4.7K

OPTIONAL

C8 0.1uF

VOUTBCKDC1P3 VOUTBCKDC1P3


RRSS99111100--NN--1111--0033



NOTE on SPI_CS and SPI_CLK: Based on the Host SPI configuration, during BOOT UP, SPI Master could be coming up as GPIO pins. In the wake of this possibility, it may be needed to add a pull up on the SPI_CS and a pull up (CPOL=1)/pull down (CPOL=0) on the SPI_CLK. The value of pull up/ pull down resistor should follow the recommendations as given on the HOST side.

However, a WLAN application that uses the RS9110-N-11-03 module may differ in the following:

1. Antenna connection: The ‘microwave coaxial connector with switch’ shown would not be required.

The RF_OUT1 (Module Pin No. 26) signals may be directly connected to an on-board chip antenna, or may be

terminated in an SMA connector of any form factor for enabling the use of external antennas.

The RF-OUT2 (Module Pin No. 25) is terminated through 50ohms precision resistor (1% Tolerance) to ground.

2. The LED is optional.


RRSS99111100--NN--1111--0033



2 Bill of Materials

2.1 SDIO Interface

Item Qty Reference Value Description Jedec Mfg Part No

CAPACITORS

1 1 C2 8.2pF CER CHP C 8.2P +-0.25P C0G 0402 25V LF 0402 Murata GRM1555C1H8R2CZ01D

2 5 C3,C6,C11,C12,C14 0.1uF CER CHIP C 0.1U 10% X5R 0402 6.3V 0402 Murata GRM155R61A104KA01D

3 1 C9 1uF CAP CER 1.0UF 16V 10% X7R 0805 0805 Murata GRM21BR71C105KA01L

4 1 C1 2.2uF CER CHIP C 2.2U 20% X5R 0402 4V 0402 Murata GRM155R60G225ME15D

5 3 C4,C7,C15 10uF CER CHIP C 10U 20% X5R 0805 10V 0805 Murata GRM21BR61A106KE19L

6 2 C10,C13 100uF CER CHIP C 47U 20% 10V CASE B CASE-B Kemet B45196H2476M209

RESISTORS

7 2 R1,R31** 33E CHIP RES 33R 5% 200PPM 0402 1/10W 0402 Panasonic ERJ-2GEJ330X

8 1 R9 51E RES 51.0 OHM 1/10W 1% (0402) 0402 Panasonic ERJ-2GE J510X

9 1 R7 820E CHIP RES 820R 5% 200PPM 0402 1/10W 0402 Panasonic ERJ-2GEJ821X

10 3 R3,R4,R5 1K RES 1.0K OHM 1/16W 5% 0402 SMD 0402 Yageo RC0402JR-071KL

11 1 R6 100K CHIP RES 100K 5% 200PPM 0402 1/10W 0402 Panasonic ERJ-2GEJ104X

INDUCTORS

12 1 L1 4.7uH Power Inductor 2520 FDK MIPF2520D4R7

13 5 FB1,FB2,FB3,FB4,FB5 BEAD Beads 0805 Murata BLM21PG221SN

Diodes

14 1 D1 LED LED 0603 Lite-On Inc LTST-C190KGKT

15 1 D2 CMS02 Schottky Diode SMD Toshiba CMS02TE12L,Q

ANTENNA TUNING NETWORK

16 3 Z1,Z2,Z3 TBD Refer to the description in the schematic.

Sample part number for Z1 given here.

Murata GRM1555C1H8R2CZ01D

IC'S

17 1 U1 40MHz Crystal Oscillator TXC 7C40000192

18 1 U2 RS9110-N-11-03 802.11abgn WLAN Module Redpine RS9110-N-11-03

19 1 ANT1 Antenna 2.45GHz &5GHz SMD Antenna RAINSUN AN1003


RRSS99111100--NN--1111--0033



20 2 J1 Microwave Coaxial Connector with switch Murata MM8430-2610RA1

21 1 J3 5X2 Box Header Burg Header

No Populate

22 1 C8 0.1uF CER CHIP C 0.1U 10% X5R 0402 6.3V 0402 Murata GRM155R61A104KA01D

23 1 R8 4.7K CHIP RES 4K7 5% 200PPM 0402 1/10W 0402 Panasonic ERJ-2GEJ472X

24 1 U3 16MBIT Serial Flash WSON SST SST25VF016B-75-4I-QAF-T

25 1 FB6 BEAD Beads 0805 Murata BLM21PG221SN

2.2 SPI Interface

Item Qty Reference Value Description Jedec Mfg Part No

CAPACITORS

1 1 C2 8.2pF CER CHP C 8.2P +-0.25P C0G 0402 25V LF 0402 Murata GRM1555C1H8R2CZ01D

2 5 C3,C6,C11,C12,C14 0.1uF CER CHIP C 0.1U 10% X5R 0402 6.3V 0402 Murata GRM155R61A104KA01D

3 1 C9 1uF CAP CER 1.0UF 16V 10% X7R 0805 0805 Murata GRM21BR71C105KA01L

4 1 C1 2.2uF CER CHIP C 2.2U 20% X5R 0402 4V 0402 Murata GRM155R60G225ME15D

5 3 C4,C7,C15 10uF CER CHIP C 10U 20% X5R 0805 10V 0805 Murata GRM21BR61A106KE19L

6 2 C10,C13 100uF CER CHIP C 47U 20% 10V CASE B CASE-B Kemet B45196H2476M209

RESISTORS

7 2 R1,R31** 33E CHIP RES 33R 5% 200PPM 0402 1/10W 0402 Panasonic ERJ-2GEJ330X

8 1 R9 51E RES 51.0 OHM 1/10W 1% (0402) 0402 Panasonic ERJ-2GE J510X

9 1 R7 820E CHIP RES 820R 5% 200PPM 0402 1/10W 0402 Panasonic ERJ-2GEJ821X

10 3 R3,R4,R5 1K RES 1.0K OHM 1/16W 5% 0402 SMD 0402 Yageo RC0402JR-071KL

11 1 R2 3.9K to 4.7K

12 1 R6 100K CHIP RES 100K 5% 200PPM 0402 1/10W 0402 Panasonic ERJ-2GEJ104X

INDUCTORS

13 1 L1 4.7uH Power Inductor 2520 FDK MIPF2520D4R7

14 5 FB1,FB2,FB3,FB4,FB5 BEAD Beads 0805 Murata BLM21PG221SN

Diodes

15 1 D1 LED LED 0603 Lite-On Inc LTST-C190KGKT

16 1 D2 CMS02 Schottky Diode SMD Toshiba CMS02TE12L,Q


RRSS99111100--NN--1111--0033



ANTENNA TUNING NETWORK

17 3 Z1,Z2,Z3 TBD Refer to the description in the schematic. Sample part

number for Z1 given here.

Murata GRM1555C1H8R2CZ01D

IC'S

18 1 U1 40MHz Crystal Oscillator TXC 7C40000192

19 1 U2 RS9110-N-11-03 802.11abgn WLAN Module Redpine RS9110-N-11-03

20 1 ANT1 Antenna 2.45GHz &5GHz SMD Antenna RAINSUN AN1003

21 1 J1 Microwave Coaxial Connector with switch Murata MM8430-2610RA1

22 1 J3 5X2 Box Header Burg Header

No Populate

23 1 C8 0.1uF CER CHIP C 0.1U 10% X5R 0402 6.3V 0402 Murata GRM155R61A104KA01D

24 1 R8 4.7K CHIP RES 4K7 5% 200PPM 0402 1/10W 0402 Panasonic ERJ-2GEJ472X

25 1 U3 16MBIT Serial Flash WSON SST SST25VF016B-75-4I-QAF-T

26 1 FB6 BEAD Beads 0805 Murata BLM21PG221SN


This page is intentionally left blank.


RRSS99111100--NN--1111--0033



3 Recommended RS9110-N-11-03 PCB Landing Pattern


RRSS99111100--NN--1111--0033



4 Circuit and Layout Guidelines

The following are guidelines for integrating the RS9110-N-11-03 module into a wireless LAN solution.

1. The WLAN module has a central ground pad of size 5.8mm x 5.2mm. An application’s layout must have a provision to include this.

a. Please provide a 5.,8 mm X 5.2 mm Copper pad on the Top side of the application board. Please open the solder mask in this area so that the Cu is exposed.

b. Please provide a 5.8 mm X 5.2 mm or higher Copper pad on the bottom side of the application board. Please open the solder mask in this area so that the Cu is exposed.

c. Please provide at least 20 via’s to connect these pads to the Ground plane. We recommend that the via’s should be at least 10 mil x 18 mil.

2. For RESET one of the two options should be followed

a. The RESET can be Host driven. At the time of Power-on, Please ensure that the reset is held low for 20mSec or more. After this the reset should be driven high.

b. Reset may be driven by an R-C circuit. The recommended value of ‘R’ is 100 Kohms and the recommended value of ‘C’ is 0.1uF.

3. The RF trace on RF_OUT should have a characteristic impedance of 50 ohms. They can use any standard 50 RF trace (Microstrip or Coplanar wave guide). The width of the 50 ohms line depends on their PCB stack like the dielectric of the PCB, thickness of the copper, thickness of the dielectric and other factors. Customers should work with their

fabrication unit to on these factors.

4. To evaluate transmit and receive performance like Tx Power and EVM, Rx sensitivity etc., a ‘microwave coaxial connector with switch’ should be placed between RF_OUT and the antenna.

5. CLK_REF is the reference clock to the module and should therefore be routed with minimum trace length and should be routed away from

other switching or sensitive traces.

6. The design for embedded system with the Wi-Fi Module should provide for a peak power load of 400mA.


RRSS99111100--NN--1111--0033



5 Chip Antenna Layout Recommendations

The choice of antenna will depend on the application. However, some recommendation is listed below if an on-chip antenna is desired to be used:

Rainsun AN1003

Fractus FR05-S1-NO-1-004

Please make sure that the Cu is etched out in all the Layers in the Antenna region. The Ground plane should be removed from under and both sides of the antenna. Please follow the rules listed in the picture below while doing the layout for the chip Antenna.

Figure 3 Antenna Layout The chosen Chip Antennae are /4 antennae and would require external ground

plane for proper functioning and the length of the ground plane behind the antenna (from the feedpoint of antenna to backwards) should be atleast 1 or 2 inches.

Interms of feedtrace which does not have ground underneath (3mm length), will be resonant part of the antenna and lower its frequency. This can be a useful tuning method although this kind of short trace should have little effect which can be observed on a Network Analyzer. It is recommended to characterize the antenna

portion using a Network Analyzer. Electrical performance of any Chip antenna is influenced by the physical characteristics of the surrounding ground plane, feed line, other devices, and materials. This can be used as an advantage by manipulating certain parameters to affect resonant frequency and match:

1. Ground plane configuration

2. Distance from antenna


RRSS99111100--NN--1111--0033



3. Topology around antenna

4. Feed point transmission line impedance

5. Trace width

6. Trace length

7. Matching Network

8. PCB substrate thickness

9. PCB substrate dielectric constant.

5.1 Antenna Matching Network

Provision should be given for a pie network as shown in the schematics. The values shown below are just for example. The values of the pie network components depends on the Antenna part, Customers layout, Gnd plane in the layout & other components in the system which could

affect the radiation pattern of the Antenna. Please use a Network Analyzer to optimize the values of the match network for the best return loss.

L=3nHto3.9nH

C=1.5pFto3pF

C=1.5pFto3pF

L=3nHto3.9nH

Ground Plane

RF IN

ANT

Ground Plane

RF IN

ANT

Figure 4 Antenna Matching Network

The radiation pattern of the Antenna can be studied in an Anechoic

Chamber using a Network Analyzer & a Horn Standard Gain Antenna


RRSS99111100--NN--1111--0033




RRSS99111100--NN--1111--0033



6 Reference Oscillator Specifications

Parameter Specifications Units Comments

Nominal Frequency 40 MHz

Frequency Accuracy ± 20 PPM Over operational temperature at rated voltage.

Supply Voltage (VDD) 2.8 ± 10% or

3.3 ± 10%

V Power supply should ideally be locally regulated, and with adequate filtering.

Power Supply PSRR > 60 dB

Operational Temperature -40 to + 85 °C For industrial grade products.

Output Voltage ‘0’ level < 10% of VDD V

Output Voltage ‘1’ level > 90% of VDD V

Output type Square Wave

Duty cycle 45 to 55 %

Rise time/Fall time < 10 ns

Periodic Jitter 30 ps pk-pk ps Typical Spec of the Oscillator we use

Wake-up time from Standby < 1 ms

Wake-up time from power-on < 5 ms

Standby current < 20 uA

Active current < 10 mA

Output load > 15 pF

Phase Noise at offset:

10 Hz 100 Hz 1 kHz 10 kHz 100 kHz

< -89 < -121 < -135 < -146 < - 150

dBc/Hz

Typical Spec of the Oscillator we use.


RRSS99111100--NN--1111--0033



6.1 List of Recommended Crystal Oscillators

1. TXC part number 7C40000192 (This part was used for

characterizing all our boards)

The following can also be used based on the specifications

2. Ecera part number FD4000113

3. Fox Xpresso part number FXO-HC538R

4. Kyocera part number KC25200C40C3KE00

5. Tai-Saw Technology part number TW0377E

6. Epson Toyocom SG 150-SCE

7. Epson Toyocom SG 211-SCE

8. Golledge GXO-5332L/E 40.0MHz

9. ECS EC-2532HS

Note: Before finalizing the choice of a crystal oscillator, it is advisable to carry out detailed EVM measurements on a prototype or evaluation board.


RRSS99111100--NN--1111--0033



7 Recommended Specifications for Schottky Diode • Forward voltage: VFM = 0.40 V (max) • Average forward current: IF (AV) = 3.0 A

• Repetitive peak reverse voltage: VRRM = 30 V

7.1 Recommended Parts

a. Toshiba part number CMS02

b. NXP part number PMEG3030BEP


RRSS99111100--NN--1111--0033



8 Sample Layout

This section provides a sample layout of a board that instantiates RS9110-N-11-03. This reference board is an SDIO module with a standard interface into an SDIO slot.

8.1 Top Layer

8.2 Layer 2


RRSS99111100--NN--1111--0033



8.3 Layer 3

8.4 Bottom Layer

8.5 Component Placement


RRSS99111100--NN--1111--0033




RRSS99111100--NN--1111--0033



Revision History

Revision No.

Version No.

Date Author Changes

1 1.0 Dec ‘08 Suresh Initial Version.

Applicable to module series A01.

2 1.1 Jan ‘09 Suresh Introduced NC’s.

Applicable to module series A01.

3 2.0 Jan ‘09 Suresh New layout including the external clamp diode. Applicable to module series

B01.

4 2.01 Feb ‘09 Suresh/Venkatesh Added PCB landing pattern

5 2.02 May ‘09 Peddi Indukuri Updated company logo

6 2.03 July ‘09 Suresh Diversity Related Additions

7 2.04 Sep ‘10 Suresh Mode_Sel_0 made as NC

8 2.05 Aug ‘10 Mohan Updated recommended part numbers

9 2.7 Jan ‘11 Mohan Vellanki New schematics and PCB layout pattern Added Reference

Oscillator Specifications

10 2.8 Feb’11 Mohan Vellanki Updated with new schematics

11 2.9 Sep’11 Suresh/Mohan Updated with comments on antenna usage

12 3.0 Nov, 12 Diganta Added alternative connection to the crystal VDD

- redpine signals · i2c_sda pspi_csn0 mm8430 title size document number rev date: sheet of...

Documents