TDA7529 Datasheet, PDF (27/60 Pages) STMicroelectronics – RF front-end for AM/FM DSP car-radio with IF sampling

TDA7529
Electrical specifications
4.15 GPIO – general purpose IO interface pins
Table 22. GPIO - general purpose IO interface pins
GPIO functionality
Pin name
GPIO-Output
High level
Low level
voltage
Source
current
voltage
Sink
current
GPIO-Input
Functionality
GP1
GP2
GP4
GP5
GP6
GP7
GP8
3.3V 1 mA 0V 1 mA Analog input ADC
3.3V 1 mA 0V 1 mA Analog input ADC
3.3V 0.1 mA 0V 10 mA AM cascode V_DS input
3.3V 1 mA 0V 1 mA Digital Input
3.3V 1 mA 0V 1 mA Digital Input
3.3V 1 mA 0V 1 mA
3.3V 1 mA 0V 1 mA
voltage
Multiplexed
functionality details
are given in the
corresponding
chapters
0 ... 3.3V
0 ... 3.3V FM key AGC input
0 ... 3.3V
0 / 3.3V
0 / 3.3V SPI MISO output
FM-AGC voltage output
AM-AGC voltage output
Symbol
Parameter
High level output voltage
Low level output voltage
High level source current
High level source current
low level sink current
low level sink current
Input impedance
Input voltage range
High level input voltage
Low level input voltage
Test Condition
@ 100kΩ load to GND
@ 100kΩ load to V_DD
GP1 / GP2 / GP5 / GP6:
@ 1kΩ load to GND
GP4
@ 1kΩ load to GND
GP1 / GP2 / GP5 / GP6:
@ 1kΩ load to V_DD
GP4:
@ 100Ω load to V_DD
digital input mode
GP1 / GP2
GP5 / GP6 used as digital
input
GP5 / GP6 used as digital
input
Min
Typ
V_DD-0.3
0.5
1
0.08
0.1
0.8
1
8.0
10
100
0
2.2
-0.05
Max Units
V
0.3
V
mA
mA
mA
mA
kΩ
3.5
V
3.5
V
1.0
V
4.16 AFSAMPLE / AFHOLD
Table 23. AFSAMPLE / AFHOLD
Symbol
Parameter
Test Condition, Comments Min
Typ Max Units
Output voltage at
AFSAMPLE/AFHOLD
Maximum sink current
V_o = 0.4V
3.6
V
800
μA
27/60