User Guide

PAMS
Technical Documentation
RAE-3
8. Troubleshooting
Page 8 – 53
Issue 1 06/01
2.14 Memory Card
2.14.1 Memory Card Interface Troubleshooting
Start with assembled device with a faultless memory card inserted.
If necessary, proceed with tests in the jig with the faultless memory card in-
serted.
Clk, Cmd and Data OK means that frequency, rise and fall timing are OK during
various operating modes.
Note:
During initialization phase (MMCClk = lower frequency) the response via
MMCCmd line from card to MAD is sent in open drain mode i.e. rise time is
about 1us.
Voltage of MMCCmd and MMCDa signals depends on direction of transfer
(MAD I/O voltage is 2.8V and Card I/O is 3.0V).
Test pads J10x are located on the JL4 board of the Module Jig.
Troubleshooting diagram next page, Figure 40.