Microcomputer's Terminal Description - Kenwood KDC-MP738U Service Manual

KDC-MP738U/W7541U
/W7541UY/X792/X8009U

MICROCOMPUTER'S TERMINAL DESCRIPTION

● SYSTEM MICROCOMPUTER 30624MGPB77GP (X34: IC500)
Pin No. Pin Name
1 WIRED_REMO
2 RDS_QUAL
2 NC
3 S_SYS_DATA
4 S_SOC_DATA
5 S_SOC_CLK
6 BYTE
7 CNVSS
8 XCIN
9 XCOUT
10 RESET
11 XOUT
12 VSS
13 XIN
14 VCC1
15 NMI
16 RDS_CLK
16 NC
17 FLIP_DET
18 SRC_KEY
19 RDS_DATA
19 NC
20 PANEL_SW_DET
21 EJECT_KEY
22 PANRST
23 DSI (EJECT_ILL)
24 NC
25 F_SEL1
26 PWIC_BEEP
27 TUN_SCL
28 TUN_SDA
29 PAN_SYS_DATA
30 PAN_PAN_DATA
31 PAN_SYS_REQ
32 PAN_PAN_REQ
33,34 NC
6
I/O Application
I Remote controller input
I RDS decoder QUAL input terminal
O Not used. (In models without RDS)
O System μ-com → SOC data
I SOC → System μ-com data
I Host is SOC. CLK from SOC
I Not used
I RDS clock input terminal
O Not used. (In models without RDS)
I FLIP panel open detection
I Source key input
I RDS decoder DATA input terminal
O Not used. (In models without RDS)
I FLIP panel detach detection
I Eject key input
O Panel reset terminal
I/O DSI control terminal
O Not used (SW_REG frequency setup terminal 2)
I/O SW_REG frequency setup terminal 1
O Beep output
I/O F/E I2C clock input/output terminal
I/O F/E I2C data input/output terminal
O System μ-com → Panel data
I Panel → System μ-com data
O System μ-com → Panel communication request
I Panel → System μ-com communication request
O Not used
Truth
Processing / Operation / Description
Value Table
Pulse width detection
Output L fi xed
400k
400k
400k
32,768Hz
32,768Hz
12MHz
12MHz
Output L fi xed
H: Open, L: Close
Shut down power to panel system in synchronous
with opening the panel. Audio shall be kept on
H: OFF, L: ON
Output L fi xed
H: Panel attached, L: Panel detached
Enter PowOFF condition simultaneously with
detection
H: OFF, L: ON
H: Normal, L: Reset
L: Turns on, Hi-Z: Turns off
Output L fi xed
t H: For AM, Hi-Z: For other than AM
2kHz 1kHz
MAX 400k
MAX 400k
UART MAX500k
UART MAX500k
Output L fi xed