Microcomputer's Terminal Description - Kenwood KTC-V300E Service Manual

KTC-V300E/V300N/V300P

MICROCOMPUTER'S TERMINAL DESCRIPTION

MICROCOMPUTER : 30302MAPA21FP (X34 : IC101)
Pin No. Pin Name
1~7 NC
8 BYTE
9 CNVSS
10,11 NC
12 RESET
13 XOUT
14 VSS
15 XIN
16 VCC1
17 NMI
18 MC_REQ
19 SC_CON
20 BU_DET
21~24 NC
25 JUDGE_CLK
26~28 NC
29 SCL
30 SDA
31 SCDATA
31 TXD
32 MCDATA
32 RXD
33 BPCLK
33 SCLK
34 SC_REQ
34 BUSY
35 T-DATA
36 NC
37 T-CLK
38,39 NC
40 T-ENABLE
41 EPM
42~45 NC
46 CE
47 BG
48 I
49 DK
50 SD
4
I/O Application
O NC
I External data bus switch input
I Processor mode switch input
O NC
- Reset
O Main clock output
-
I Main clock input
-
I Non-Maskable Interrupt
I Master request
I Microcomputer run-control signal
I BU detection
O NC
I Clock detection
O NC
I/O IIC BUS clock
I/O IIC BUS data
O Communication data output between main units
O For flash write
I Communication data input between main units
I For flash write
I Communication clock input between main units
I For flash write
O Main unit setup request
O For flash write
O 3 wire circuit packet data
O NC
O 3 wire circuit packet clock
O NC
O 3 wire circuit packet enable
I Set up the write timing
O NC
I Set up the write timing
O SIF detection frequency switch
O SIF detection frequency switch
O SIF detection frequency switch
I Station detection
Processing / Operation / Description
L: 16bit, H: 8bit
L: Single chip, H: Microprocessor
Pull up
TV BOX setup request (Master data transmission
request)
TV Box microcomputer run-control signal
H: BU OFF (less than 7.5V), L: BU ON
IIC BUS compliance agreement
IIC BUS compliance agreement
H: 22.7MHz ON
H: 22.2MHz ON
H: 21.7MHz ON
H: Station found, L: Station not found