TDA7502_06 Datasheet, PDF (14/25 Pages) STMicroelectronics – In-car remote amplifier DSP

SPI interfaces
TDA7502
Table 13. Debug port interface
No.
Characteristics
dclk = 40MHz
Unit
Min.
Max.
1 DBCK rise time
--
3
ns
2 DBCK fall time
--
3
ns
3 DBCK low
40
--
ns
4 DBCK high
5 DBCK cycle time
40
--
ns
200
--
ns
6 DBRQN asserted to DBOUT (ACK) asserted
5 TDSP
--
ns
7 DBCK high to DBOUT valid
--
42
ns
8 DBCK high to DBOUT invalid
9 DBIN valid to DBCK low (set-up)
3
--
ns
15
--
ns
10 DBCK low to DBIN invalid (hold)
3
--
ns
DBOUT (ACK) asserted to first DBCK high
2 Tc
--
ns
DBOUT (ACK) assertion width
4.5 TDSP - 3 5 TDSP + 7 ns
11
Last DBCK low of read register to first DBCK high
of next command
7 TDSP + 10
--
ns
12 Last DBCK low to DBOUT invalid (Hold)
3
--
ns
DBSEL setup to DBCK
TDSP
ns
Figure 10. Debug port serial clock timing.
DBCK
(input)
(1)
(3)
(4)
(5)
(2)
D02AU1363
Figure 11. Debug port acknowledge timing.
DBRQN
(input)
DBOUT
(output)
(6)
D02AU1364
(ACK)
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