KVT-910DVD/920DVD/930DVD/
940DVD/960DVD
29
MICROCOMPUTER'S TERMINAL DESCRIPTION
●
TU-SYSTEM U-COM (IC31:X25-862X-XX) µPD784215GC-206
Pin
Name
I/O
Function
Description of Processing
1
OFF_REQ_P
I
BUS off Request
L: BUS OFF
2
ON_REQ_P
I
BUS on Request
L: BUS ON
3
NC
O
Not used
4
ILL_ON
O
ILLUMI output terminal
H : ILL ON
5
A
O
Not used
6
NC
O
Not used
7
NC
O
Not used
8
NC
O
Not used
9
Vdd
-
Main power input
10
X2
-
Main system clock oscillation terminal
11
X1
-
Main system clock oscillation terminal
12
Vss
-
GND terminal
13
XT2
-
Sub system clock oscillation terminal
14
XT1
-
Sub-clock input
15
RESET
I
Reset input
L: RST
16
NC
O
Not used
17
R_CLK
I
RDS clock input
18
REQC
I
handshake request from changer
L: Request
19
BRST_P
O
IE-Bus reset
L: RST
20
BCS_P
O
IE-Bus chip select
L: CS
21
BCD_P
O
IE-Bus Command/Data
H: Control mode, L: Read-Write mode
22
BIRQ_P
I
IE-Bus IC request
23
AVdd
-
Analog power source for A/D
24
AVref0
-
Reference voltage input for A/D
25
PHONE
I
PHONE detection
NAV2.5V
↑
, PHONE1V
↓
26
NC
I
Not used
27
NOISE
I
FM noise detection
A/D input
28
SMETER
I
FM Smeter detection
A/D input
29
NC
I
Not used
30
NC
I
Not used
31
IF_MODE
I
IF condition detection for K21
Reading port
32
NC
I
Not used
33
AVss
-
A/D GND terminal
34
NC
O
Not used
35
NC
O
Not used
36
AVref1
-
Reference voltage input for D/A
37
BDIC_P
I
Bus IC data input
38
BDCOM_P
O
Bus IC data output
Maintain last
39
BCLK_P
O
Bus IC clock out
40
DATAC
I
Data line from changer
41
DATAH
O
Data line to changer
42
CH_CLK
I/O Clock line with changer
Input port while changer control is OFF
