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12
13
14
15
16
17
18
19
20
2.3、Standby control CPU（PIC16F505）
Pin number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
IF
SW0
SW1
NC
SIF
AGC
VEDIO
+5V
AUDIO
Pin definition
VDD（+3.3V）
RB5/OSC1/CLCKIN
RB4/OSC2/CLCKOUT
RB3/MCLP/VPP
RC5
RC4
RC3
RC2
RC1
RC0
RB2
RB1/ICSPCLK
RB0/ICSPDAT
VSS
IF signal output(not connect)
Band control
Band control
Not connect
Not connect
Auto gain control
CVBS signal output
Power
Not connect
Pin function description
Power
NC
LED1 KEYPAD STB output, standby indicator lamp control
Input voltage (+5V)when programming or reset input(+5V)
I/O port: POWER OFF1 input, from GM1501 output, inform
PIC16F505 to do off operation.
I/O port: ALARM input, turn on on time enable control.
I/O port: PDP-STB output, standby/on control
I/O
port:
POWER-STANDBY output,GM1501
executing off operation by key button.
I/O port: IRIN remote instruction input
I/O port: POWERKEY input, connect to on/off key of k board
directly.
I/O port: connect +3.3V
programming use
programming use
Ground
8
to
inform
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