Microcomputer's Terminal Description - Kenwood KAC-PS4D/X4R Service Manual

MICROCOMPUTER'S TERMINAL DESCRIPTION

● SYSTEM µ-COM 78F0536GK011A (X09-862 : IC900)
Pin No. Pin Name
1 /P_CON
2~5 NC
6 /RESET
7 OVF
8 NC
9 FLASH_W
10,11 NC
12 REGC
13 VSS
14 EVSS
15 VDD
16 EVDD
17 D2_CLK
18 D2_DATA
19 /N-ERROR
20 NC
21 /OC_DET
22 /D2_RESET
23 /D2_RST_DET
24,25 NC
26 /PREOUT_MUTE
27 /DSP_MUTE
28~30 NC
31 /SP_MUTE
32 OUT_OF_BOOT
33 BOOT_CTRL (Not Used)
34 ROTARY_CW
35 ROTARY_CCW
36 14V_SW
I/O Application
I Clear the stop mode by P-CON ON
O Not used
I Reset
I ADC overfl ow detection
O Not used
I Used when writing in the fl ash
O Not used
-
- Connect to GND
- Connect to GND
- Connect to VDD
- Connect to VDD
I/O D2 control (75kHz max)
I/O D2 control
I Over current detection
O Not used
I Over current detection
O Reset TENZING
I Tenzing reset detection
O Not used
O Mute the pre-out
O Mute TENZING
O Not used
O Mute the speaker output
Receive BOOT completion status from
I
TENZING
DSP BOOT control
I
(No µ-com control)
I Encoder pulse input
I Encoder pulse input
O SW14V ON/OFF
KAC-PS4D/X4R
Processing / Operation / Description
L: Clear the stop mode (INTP0)
H: (P120)
Output L fi xed
H: When the overfl ow is detected displays on VFD
Output L fi xed
Output L fi xed
I2C BUS
I2C BUS
L: Enter the protection mode when the over current is
detected. Turn off the amplifi er power supply and display the
error (E-03).
Automatically recover in 200msec.
Output L fi xed
Check current every 1ms, and when "L" is detected 15 times
in succession the over current is detected and enter the over
current protection mode. Turn off the amplifi er power supply
and display the error (E-03).
Automatically recover in 200msec.
L=RESET
When Low is detected at pin23 while the pin22 of the µ-com
is High,temporarily turn off the amplifier and reboot the
system.
Output L fi xed
L: MUTE ON
L: MUTE ON
Output L fi xed
L: MUTE ON
L: Tenzing BOOT completion (DSP is in its operation)
L: BOOT from µ-com
H: BOOT from EEPROM
Detect pulse phase difference
Detect pulse phase difference
SW14V ON/OFF
Amplifi er power supply ON: H, Initial condition L
5