Philips CEM5000/00 Service Manual page 72

2
6.12.1 I C interface
The following parameters apply to the serial bus communication when I
start-up. For the other electrical characteristics of the pins, section 6.9 applies. The parameters of the
following table are defined as in Figure 1.
Symbol Parameter
f SCL Clock frequency
SCL
t SCL low to SDA data valid
AA
time the bus must be kept
t free before a new
buf
transmisison
t START condition hold time
HD-STA
t Clock low period
LOW
t Clock high period
HIGH
t START condition setup time
SU-SDA
t Data input hold time
HD-DAT
t Data input setup time
SU-DAT
t SDA & SCL rise time
R
t SDA & SCL full time
F
t Stop condition setup time
SU-STOP
t Data out time
DH
Test Condition, Comments
2
Figure 1 I C bus timing diagram
Rev. 1.0
TDA7703/TDA7703R
2
C protocol has been selected at
Limits
Min Typ Max
100 500
300
4.7
4.0
4.7
4.0
4.7
0
250
1000
300
4.0
300
Units
kHz
ns
us
us
us
us
us
us
ns
ns
ns
us
ns
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