Ac Measurements; Timing Measurements - Nokia RH-27 Series Technical Documentation Manual

CCS Technical Documentation
Measured
Signal name
value (V)
TxDa H = 1.75
L = -18m
RxDa H = 1.76
L = -11m
ExtClk H = 1.75
L = -12m
VCtrl N/A
NOTE: H indicates high signal level and L indicates low signal level.

AC Measurements

Measured
Signal name
value (V)
DaCLK F = 4.799
D = 49.4
ExtClk F = 9.6
D = 49.3
NOTE: DaClk frequency will not exceed ExtClk/2.

Timing measurements

Signal descriptions
Chip-select CSX enables and disables the camera serial bus. CSX is active low. An addi-
tional function of CSX during the power up sequence is to determine the communication
mode of the HWA (UIF or CCI/CCP).
DaClk is a serial data clock and is typically set to ExtClk/2. The clock can be driven low
when data is not transmitted, but may be running when CSX is inactive as well.
RxDa data-length is 8 bits + D/C-bit. The first bit to be received is D/C-bit which indi-
cates to the camera the status of following 8 bit data. In the case of command data to
camera the D/C-bit is low ('0'). The camera must not react to received data if D/C-bit is
high ('1').
TxDa data-length is 8 bits + TxEnd-bit. The first bit to be transmitted is the TxEnd-bit
Issue 1 11/2003 Confidential
Table 4: DC characteristics
Min Typical Max
H:0.8xVIO H:VIO
L:0 L:0.2xVIO
H:0.7xVIO H:VIO
L:0 L:0.3xVIO
0.5Vp-p 1Vp-p VIOp-p
H:0.7xVIO H:VIO
L:0 L:0.3xVIO
Table 5: AC characteristics
Min Typical Max
4.69 4.8 4.81
45/55 50/50 55/45
9.59 9.6 9.69
45/55 50/50 45/55
©2003 Nokia Corporation
Troubleshooting - Baseband
Unit Description
V Data to transmit, camera
interrupt (active low)
V Data to receive
V All modes
V Logic O: shutdown
Unit Description
MHz Frequency
% Duty cycle
MHz External system clock
(mode 4)
%
RH-27
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