TDA7705_10 Datasheet, PDF (22/42 Pages) STMicroelectronics – Highly integrated tuner for AM/FM car radio

Electrical specifications
TDA7705
3.4.10
3.4.11
SPI interface
The following parameters apply to the serial bus communication when SPI protocol has
been selected at start-up. For the other electrical characteristics of the pins, Section 3.4.8
applies.
Table 16. SPI interface
Symbol
Parameter
f_SCK
t_SU
t_H
t_WH
t_WL
t_RI
t_FI
t_V
t_HO
t_DIS
t_CS
t_CSS
t_CSH
Clock frequency
Data setup time
Data hold time
SCK high time
SCK low time
Input rise time
Input fall time
Output valid from clock low
Output hold time
Output disable time
CS high time
CS setup time
CS hold time
Figure 9. SPI bus timing diagram
V_IH
SPI_SS
V_IL
V_IH
SPI_CLK
V_IL
V_IH
SPI_MOSI
VIL
t_CSS
t_WH
t_SU
t_H
VALID IN
V_OH
HI-Z
SPI_MISO
V_OL
Min
Max
-
4.0
25
-
25
-
50
-
50
-
-
2
-
2
-
50
25
-
25
25
-
25
-
25
-
Unit
MHz
ns
ns
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
t_CS
t_CSH
t_WL
t_RI
tFI
t_V
t_HO
t_DIS
HI-Z
Warning
When the TDA7705 is not powered on, the internal ESD protection diodes pull-down keep
the I²C/SPI lines connected to ground. This implies that the I²C/SPI bus connected to the
TDA7705 may not be used to drive other devices when the TDA7705 is powered off.
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Doc ID 15938 Rev 8