Nokia 6225 Service Manual
CCS Technical Documentation
Troubleshooting - Baseband
RH-27
Issue 1 11/2003 Confidential ©
2003 Nokia Corporation
Page 25
UIF Interface Timing Measurements
Test Purpose
Purpose of this test is to measure the timing of UIF serial interface. Rise and fall times
are also measured.
are also measured.
Figure 11: Timing diagram of DaClk and RxDa signals
Figure 12: Timing diagram of DaClk and TxDa signals
Figure 13: Timing diagram of CSX and DaClk signals
t3
134us@1.3v
>120us
Determined by external RC
t4
119.5us@1.3v
>100us
t5
3.75ms
>5ms
Software dependent
t6
N/A
>0
SSDA and SSCL signals not used
t7
N/A
>8ms
SSDA and SSCL signals not used
Table 6: Power up timing
Parameter
Measured value
Limit
Notes
RxDa
T
dis
T
dih
50%
DaClk
DaClk
TxDa
Tod
50%
50%
Tod
50%
50%
DaClk
T
CSX
T/2
(min)
T
(min)
Tcss
Tcsh
T
(min)