Readout of Temperature Monitor with SEABAS

’11 10/12 Y. Takubo (KEK)

1

Setup

2

AD7887

SMB

SEABAS

Module

BCC board

• Two ADCs are mounted on SMB to read 16 temperature monitors.• SDA and SCL are pulled up by FPGA on SEABAS.

Operation signals

SDA

SCL

CONVB

3

We have no output from ADC. We investigated the response more carefully.

Response from ADCSDA

SCL

CONVB

Address byte: 01000100with write mode

4

This bit must be pulled down by the ADC.

If you have any suggestions, please let me know.