Microcomputer’s Terminal Description; System Microcomputer : Mn101C49Hnh (Main Pwb Unit : Ic1) - Kenwood DPX-MP5070 Service Manual

DPX-MP5070
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MICROCOMPUTER'S TERMINAL DESCRIPTION
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SYSTEM MICROCOMPUTER : MN101C49HNH (MAIN PWB UNIT : IC1)

Pin No. Pin Name
1 VREF-
2 REEL_S
3 REEL_T
4 DC_ERR
5 LINE_MUTE
6 ACC_DET
7 ILLUMI_DET
8,9 NC
10 VREF+
11 VDD
12 OSC2
13 OSC1
14 VSS
15 XI
16 XO
17 MMOD
TE
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18 LX_DATA_M
19 LX_DATA_S
20 LX_CLK
21 SYS_DATA
22 PN_DATA
23 PN_CLK
24 PWIC_BEEP
25 NC
26 BU_DET
27 LX_REQ_S
28 PANEL_SW
29 PN_REQ
30,31 NC
32 VDD2
33 NRST
34~36 NC
37~39 MODE1~MODE3
40 NC
41 VPP
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42 SYS_REQ
43 PN_SCCON
.
44 NC
SDA/CD_SDA
45
SDA/E2PROM_SDA I/O
4
I/O Function
- Reference power supply (-)
I Cassette mechanism reel rotation detection
I Cassette mechanism reel rotation detection
I Power IC offset voltage monitoring
I Line mute detection
I ACC power supply detection
I Dimmer illumination detection
I
- Reference power supply (+)
- Microcomputer power supply terminal
- Main clock output
- Main clock input
- Microcomputer GND terminal
- Sub-clock input
- Sub-clock output
- Memory mode setting
O Data to slave unit
I Data from slave unit
I/O LX BUS clock
O Between-panel communication output
I Between-panel communication input
O Between-panel communication clock
O Beep output
O
I Detection of momentary power down
I Communication request from slave unit
I Panel detection
I Between-panel communication control
I
- Microcomputer power supply
I Microcomputer reset terminal
O
I Cassette mechanism status detection SW1~SW3
O
- Power supply terminal for writing to flash memory
O Between-panel communication control (FLASH BUSY)
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O Between-panel communication control (FLASH CE)
i
O
I/O CD mechanism I2C data input/output terminal
E2PROM write terminal
2 9
8
Truth Value
Table
H : ACC OFF
L : ILLUMI ON
Q Q
3 6 7 1 3 1 5
L : Normal, H : Momentary power down
L : Close, H : Open
L : Panel-side data in transmission
Microcomputer power supply
L : Reset
H : Panel-side data in reception
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L : Communication start request
.
9 4 2 8
Processing Operation Description
0 5 8 2 9 9 4 2 8
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9 9
9 9