Microcomputer's Terminal Description; Ic110 : Main Unit; Ic201 : Main Unit - Kenwood KNA-DV2200 Service Manual

MICROCOMPUTER'S TERMINAL DESCRIPTION

IC110 : MAIN UNIT

Pin No. Pin Name
1 P04 (TEL-CGON)
2 P05 (TEL-CHAG)
3 P06 (ACC ON)
4 P07 (B UP)
5 MODE0
6 MODE1
7 RST
8 XO
9 XI
10 VSS
11 P37 (POWER ON)
12 P36 (WDP)
13 P35 (ACC)
14 P34 (BU)
15 P33 (CKE)
16 C
17 P32 (IOPFLWR)
18 P31 (ST1)
19 P30 (ST0)
20 P50 (IORES)
21 AVSS
22 P40 (VCC3ON)
23 P41 (BVC3ON)
24 P42 (RMUTE)
25 P43 (RES3)
26 P00 (SH4NMI)
27 P01 (TEL-OVER)
28 P02 (6.8VDET)
29 P03 (3.3VDET)
30 VCC

IC201 : MAIN UNIT

Pin No. Pin Name
1 RDY
2 RESET
3 CS0
4 CS1
5 CS4
6 CS5
7 CS6
8 BS
9 VDDQ
I/O Description
O Power supply circuit control output
I Power supply circuit ON request input
O ACC ON output to IO PLUS
O Backup condition set-up output
-
-
I RESET input (connected with RESET SW on the panel)
O Resonator connection terminal
I Resonator connection terminal
- GND connection terminal
O P ON output
I WDP input
I ACC detection input
I Momentary power down detection
I CKE from SH4
- Capacitor connection terminal
O
I Status input 1 from SH4
I Status input 0 from SH4
O IO PLUS reset output
- GND connection terminal
O VCC3D selection terminal (Normal)
O VCC3D selection terminal (Backup)
O Mute output at Power ON/OFF
O NAVI reset output (VCC3 system reset signal)
O NMI output to SH4
I Output voltage watch of power supply circuit
I Output voltage watch of 6.8V power line (CDHVCC)
I Output voltage watch of 3.3V power line (VCC3)
- Positive power supply connection terminal
I/O Description
I RDY input
I Reset input
O Chip select 0 output
O Chip select 1 output
O Chip select 4 output
O Chip select 5 output
O Chip select 6 output
O Bus start
- Positive power supply connection terminal (+3.3V)
KNA-DV22000
Processing Operation
Hi : Power supply circuit ON
Hi : Start request
Lo : ACC ON
Lo : Backup condition
Not used (connected to GND lines)
Not used (connected to GND lines)
Lo : Reset
Connected to GND lines.
Hi : Power ON
Detection of pulse edge
Hi : ACC ON
Hi : BU ON
Lo : SDRAM self-refresh,
Hi : SDRAM normal operation
Not used (N.C.)
Lo : Reset
Connected to GND lines.
Lo : Normal operation
Lo : Backup mode
Lo : Mute ON
Lo : Reset
Hi→Lo : Back up request to SH4
Lo : Output imprudence
Hi : Output voltage OK
Hi : Output voltage OK
Connected to Backup power supply.
Processing Operation
Lo : Reset
Lo : Selected (BOOT ROM)
Lo : Selected (SRAM)
Lo : Selected (IO PLUS)
Not used (N.C.)
Lo : Selected (CF Card)
Connected to VCC3 lines.
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