Harman Kardon DPR1005 Service Manual page 40

PR1005/DPR2005
D
3.6 SWITCHING CHARACTERISTICS - CONTROL PORT
T = 25°C, HV=38V, LV=12V, SV=7.5V, Ground = 0V
A
Symbol Description
fSCL SCL frequency
t Bus free time between transmissions
buf
t SCL SCL clock low
w
t SCL SCL clock high
w
t STA Setup time for a (repeated) Start
s
t STA Start condition Hold time
h
t SDA SDA hold from SCL falling (see note)
h
t SDA SDA setup time to SCL rising
s
t SDA SDA delay time from SCL falling
d
t Rise time of both SDA and SCL
r
t Fall time of both SDA and SCL
f
t STO Setup time for a Stop condition
s
Note: Data must be held sufficient time to bridge the 300ns transition time of SCL
t SDO SDO1-4 delay from SCLK falling
d
TABLE 7: Control Port Timing
SCL
t STA
s
SDA
(input)
SDA
(output)
FIGURE 2: Control Port Timing
GR70 Data Sheet Aug 26, 2003 v1.82
t SCL t
w
t SDA
s
t STA
h
t SDA
d
Min Max
4.7
4.7
4.0
4.7
4.0
0
250
4.7
t
r f
t SDA t STO
h s
40
harman/kardon
Unit
100 kHz
us
us
us
us
us
us
ns
3.5 us
1 us
300 ns
us
20 ns
t
buf
CONSUMER
7