Inhaltsverzeichnis
Werbung
Verfügbare Sprachen
Verfügbare Sprachen
Microprocessor Pin-outs
Pin
Designation
1
P2.0/TPWM
2
P2.1/PWM0
3
P2.2/PWM1
4
P2.3/PWM2
5
P2.4/PWM3
6
P2.5/PWM4
7
P2.6/PWM5
8
P2.7
9
P3.0/ADC0
10
P3.1/ADC1
11
P3.2/ADC2
12
P3.3
13
Vssd
14
P0.0
15
P0.1
16
P0.2
17
P0.3
18
P0.4
19
P0.5
20
P0.6
21
P0.7
22
Vssa
23
CVBS0
24
CVBS1
25
Black
26
Iref
27
Frame
28
Test
29
COR
30
P3.4
31
RGBref
32
OSD B
33
OSD G
34
OSD R
35
OSD EN
36
H sync
37
V sync
38
Vdda
39
Vddt
40
Osc gnd
41
Osc in
42
Osc out
43
Reset
44
Vddm
45
P1.0/Int1
46
P1.1/T0
47
P1.2/Int0
48
P1.3/T1
49
P1.6/SCL
50
P1.7/SDA
51
P1.4
52
P1.5
NOTE
! ! ! !
Table 5
Pin Descriptions
I/O
O
Tuning PWM
O
Text contrast PWM
O
AV audio control: high = AV2, low = RGB/AV1
O
!FM/AM source select (low = AM)
O
!SCART/internal sound select (low = internal sound)
O
!L' control select (active high)
O
Pseudo line drive
O
Force RGB high = RGB mode
AV1 SCART pin 8 level detection (ADC)
AV1 SCART pin 16 level detection (ADC)
AGC level sampling (ADC)
–
Digital ground
I
High band tuner select (active low)
I
Mid band tuner select (active low)
I
Low band tuner select (active low)
O
Audio mute control (active low
I
Select key
I
Down key
I
Up key
–
Analogue ground
I
Composite video
–
I
Video black level storage
I
Reference current
–
Ground
–
TDA884X Line drive gating: high in standby & start-up, low in operation
I
RGB reference
O
Blue OSD
O
Green OSD
O
Red OSD
O
OSD enable
I
Horizontal sync
I
Vertical sync
+5V display power supply
+5V display power supply
Crystal oscillator ground
I
12MHz crystal oscillator
O
12MHz crystal oscillator
I
Reset (active high)
+5V microcontroller power supply
I
Remote control
O
Standby/IR LED: low = LED bright, high = LED dim
I
Line drive from TDA884x
O
Standby control (active low)
I²C clock
I²C data
I
Service mode (active low)
I
Halt microcontroller control (active low)
Only used on French chassis
Purpose
24
Werbung
Inhaltsverzeichnis
