KRF-X7775D/X7775D-S/VR-5080/5090
9
CIRCUIT DESCRIPTION
Port No.
Port Name
I/O
Function
51
VDD
-
+5V power supply
52
AVREF
-
Reference voltage input.
53
MODEL SEL
I
Discrimination port for model type.
54
DSW0
I
Detection port for tuner destination SW 0.
55
THERM SW
I
Detection port for thermal switch. (Refer to 7-1)
56
S LEVEL
I
RDS signal level input. (E/T type only)
57
RDS DATA
I
Data input of RDS demodulator IC. (E/T type only)
58
CLOSE SENS
I
Detection port of close sensor for panel door. (Refer to 7-3)
(KRF-X9995D/VR-5900 only)
59
OPEN SENS
I
Detection port of open sensor for panel door. (Refer to 7-3)
(KRF-X9995D/VR5900 only)
60
INPUT DOWN KEY IN
I
Detection port of input down key.
61
AVSS
-
Connected to GND.
62
P MACRO IN
I
Input port of perfect macro. (Refer to 7-7)
63
RELAY CONT
O
Relay control output. (Refer to 7-4)
64
AVREF1
-
Reference voltage input.
65
1394/TEXT RX
I
CD TEXT UTRA communication data input.
66
1394/TEXT TX
O
CD TEXT UTRA communication data output.
67
SUB RESET
O
Reset signal output to sub microcomputer.
68
RS RX1
I
RS232C communication data input 1. (Except KRF-X7775D)
69
RS TX1
O
RS232C communication data output 1. (Ditto)
70
RS RX2
I
RS232C communication data input 2. (Ditto)
71
RS TX2
O
RS232C communication data output 2. (Ditto)
72
LED
O
Control port for pro logic2 led.
73
SDT
I
Communication data input from sub microcomputer.
74
MDT
O
Communication data output to sub microcomputer.
75
MCK
O
Clock output to sub microcomputer.
76
MREQ
O
Communication master request.
77
SREQ
I
Communication slabe request.
78
F/CSW MUTE
O
Mute control port for room A.
79
PRE S/B MUTE
O
Mute control port for pre out surround.
80
SP S/B MUTE
O
Mute control port for S/B speakers.
81
PRE ZB MUTE
O
Mute control port for pre out B (zone B).
82
V/RECMUTE
O
Mute control port for video rec out.
83
10dB GAIN
O
Switching port for +10dB amplifier.
84
RELAY CS
O
Mute control port for center/surround speakers.
85
RELAY B
O
Relay control port for speaker B.
86
RELAY A
O
Relay control port for speaker A.
87
RELAY TR
O
Switching port for transformer tap.
88
POWER
O
Power relay control port.
89
FAN H/L
O
Control port for fan motor (H/L).
90
FAN ON/OFF
O
Control port for fan motor (on/off).
91
10W
I
10W detection port for fan control.
92
1W
I
1W detection port for fan control.
93
IR SELECT
O
RF/IR IN switch control. (Refer to 7-5), KRF-X9995D/VR-5900 only
94
V PROT
I
Detection port of protection signal.
95
I PROT
I
Detection port of protection signal.
96
STBY LED
O
Control port for standby led.
97
REM RWR
I
RWR from LCD remote controller.
98
REM ENB
I
Chip enable from LCD remote controller.
99
REM REQ
O
Request to LCD remote controller.
100
VSS
-
GND
✽
Refer to 7-1
✽
✽
✽
✽
