Philips CEM5000/00, Service Manual

Page: 72 / 83

TDA7703/TDA7703R
6.12.1 I
2
C interface
The following parameters apply to the serial bus communication when I
2
C protocol has been selected at
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.
Limits
Symbol Parameter Test Condition, Comments
Min Typ Max
Units
f
SCL
SCL Clock frequency 100 500 kHz
t
AA
SCL low to SDA data valid 300 ns
t
buf
time the bus must be kept
free before a new
transmisison
4.7 us
t
HD-STA
START condition hold time 4.0 us
t
LOW
Clock low period 4.7 us
t
HIGH
Clock high period 4.0 us
t
SU-SDA
START condition setup time 4.7
us
t
HD-DAT
Data input hold time 0 us
t
SU-DAT
Data input setup time 250 ns
t
R
SDA & SCL rise time 1000
ns
t
F
SDA & SCL full time 300 ns
t
SU-STOP
Stop condition setup time 4.0 us
t
DH
Data out time 300
ns
Figure 1
I
2
C bus timing diagram
Rev. 1.0 11/22