Read Harman Kardon AVR 133 Service Manual online
3. Pin Functions
No.
Pin Name
Pin Symbol
I/O
Pin Description
1
P120/INTP0/EXLVI
PROTECTION
I
Input for protection
2
P43
VOL_UP
I
Input for volume up
3
P42
VOL_DN
I
Input for volume down
4
P41
H/P_RLY
O
Output for headphone relay
5
P40
C_RLY
O
Output for center speaker relay
6
RESET
RESET
I
Input for u-com reset
7
P124/XT2/EXCLKS
S_RLY
O
Output for surround speaker relay
8
P123/XT1
F_RLY
O
Output for front speaker relay
9
IC/FLMD0
FLMD0
O
Port for flash mode setting
10
P122/X2/EXCLK
V1 OUT_MUTE
O
Output for VIDEO1 OUT MUTE
11
P121/X1
TRIG CONTROL
O
Output for DC TRIGGER ON/OFF
12
REGC
Connect to ground via 0.47uF/50V E.Cap
13
VSS
VSS
Ground
14
EVSS
EVSS
Ground
15
VDD
VDD
3V3
16
EVDD
EVDD
3V3
17
P60/SCLO
VIDEO_MUTE
O
Output for video mute
18
P61/SDA0
VIDEO_S1/HDMI_S2
O
Output for video/HDMI function IC switching
19
P62/EXSCL0
VIDEO_S2/HDMI_S1
O
Output for video/HDMI function IC switching
20
P63
TUNED
I
Input for tuner "TUNED" condition (L is active)
21
P33/TI51/TO51/INTP4
RDS_CLK
I
Clock signal input from tuner pack
22
P77/KR7
RDS_DATA
I
Input for RDS data from tuner pack
23
P76/KR6
PLL_CE
O
Chip select output for tuner pack
24
P75/KR5
PLL_DO
O
Data output for tuner pack
25
P74/KR4
SW_MUTE
O
Output for subwoofer channel mute
26
P73/KR3
C_MUTE
O
Output for center channel mute
27
P72/KR2
S_MUTE
O
Output for surround channel mute
28
P71/KR1
F_MUTE
O
Output for front channel mute
29
P70/KR0
USB_PC
O
Output for IC108(REGULATOR) ON/OFF
30
P06/TI011/TO01
R2A1521FP_CLK
O
Clock signal output for R2A1521FP
31
P05/TI001/SSI11
R2A1521FP_DATA
O
Output for R2A1521FP control data
32
P32/INTP3
P32
Port for flash upgrade
33
P31/INTP2
P31
Port for flash upgrade
34
P50
DSP/DIR_CCLK
O
Clock signal output for DIR/DSP
35
P51
DSP/DIR_CDIN
I/O
Input & output for DIR/DSP control data
36
P52
DSP_RESET
O
Output for DSP reset
37
P53
DSP_RDY
I
Input for DSP enable
38
P30/INTP1
DSP_CE
O
Chip select output for NJW1153
39
P17/TI50/TO05
DSP_ABOOT
O
Ouput for DSP Auto boot
40
P16/TOH1/INTP5
DSP_INTREQ
I
Interrupt signal output to DSP
41
P15/TOH0
DIR_PDN
O
Output for DIR power down
42
P14/RXD6
RxD
I
Input for flash upgrade
43
P13/TXD6
TxD
O
Output for flash upgrade
44
P12/SO10
Front B RLY
O
Output for SPK B ON/OFF
45
P11/SI10/RXD0
24C08_SCLK
O
Clock signal output for 24C08
46
P10/SCK10/TXD0
24C08_SDA
I/O
Input & output for 24C08 control data
47
AVREF
AVREF
3V3
48
AVSS
AVSS
GROUND
49
P27/ANI7
KEY2
I
Input for KEY2 scan
50
P26/ANI6
KEY3
I
Input for KEY3 scan
51
P25/ANI5
KEY1
I
Input for KEY1 scan
52
P24/ANI4
BT/THERMAL_DET
I
BLUETOOTH DETECT
53
P23/ANI3
HDMI_HPD
O
Ouput for HDMI HPD(NOT USED)
54
P22/ANI2
HDMI_S2
O
Ouput for HDMI S2 CONTROL(NOT USED)
55
P21/ANI1
HDMI_S2
O
Ouput for HDMI S1 CONTROL(NOT USED)
56
P20/ANI0
FUNC_DN
I
Input for function encoder down
57
P130
ST/BY_LED
O
Ouput for standby led
58
P04/SCK11
ST/BY_RLY
O
Onput for standby relay
59
P03/S111
FUNC_UP
I
Input for function encoder up
60
P02/S011
FLT/PLL_DATA
O
Output for FLT/PLL control data
61
P01/TI010/TO00
FLT/PLL_CLK
O
Clock signal output for FLT/PLL
62
P00/TI000
RMC
I
Input for remocon data
63
P141/BUZ/INTP7
FLT_CE
O
Chip select output for FLT
64
P140/PCL/INTP6
POWER_DOWN
I
Input for power down
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