TDA7529_11 Datasheet, PDF (27/61 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
GP1
GP2
GP4
GP5
GP6
GP7
GP8
GPIO-Output
GPIO-Input
High level
Low level
Voltage
Source
current
Voltage
Sink
current
Functionality
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
Doc ID 13311 Rev 4
27/61