Function Table Of Ic - Sharp MD-MT877S Service Manual

Portable minidisc recorder
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IC401 RH-iX0419AWZZ :System Microcomputer (IX0419AW) (1/2)
Terminal Name Input/Output
Pin No.
Port Name
1
PE5
SYRS
2
PE6
_SYRD
3
PE7
_SYWR
4-11
PD0-PD7
SYD0-SYD7
12
CVCC
CVCC
13
PC0
PCLAT
14
Vss
VSS
15
PC1
_MCPGI
16
PC2
_INPGI
17
PC3
INPGCK
18
PC4
RCPCNT
19*
PC5
TEST1
20*
PC6
TEST0
21
PC7
JPNP
22
PB0
OPICGA
23
PB1
RFRCNT
24
TIOCC3
BUZOUT
25
PB3
SGAIN
26
PB4
DISCP
27*
TIOCB4
MCMON
28
PB6
RACLK
29
PB7
RADAT
30
PA0
CHGCNT
31
TxD2
DSPDAT
32
PA2
DSPSTB
33
SCK2
DSPSCK
34
P10
PBOPON
35*
P11
P11
36
P12/TCLKA
CIN
37
TCLKB
SPIN
38
IRQ0
_DINT
39
P15
DISCPR
40
IRQ1
ARQD
41*
P17
P17
42
AVSS
AVSS
43
DA1
LDVAR
44*
DA0
PA0
45
AN7
RKCNG
46
AN6
TEMP
47
AN5
HKEY2
48
AN4
HKEY1
49
AN3
RKEY
50
AN2
STDCK
51
AN1
PLVDCI
52
AN0
PLVBAT
53
Vref
VREF
54
AVCC
AVCC
55
MD0
MD0
56
MD1
MD1
57*
OSC2
OSC2
In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside.

FUNCTION TABLE OF IC

Output
System LSI register selection output.
Output
System LSI read enable output.
Output
System LSI write enable output.
Input/Output
System LSI parallel data bus.
Input
Power supply of internal voltage drop circuit.
Output
Record audio IC data latch output.
Ground potential.
Input
Microphone plug insertion detection input.
Input
Line/digital plug insertion detection.
Input
Line/digital plug type detection.
Input/Output
Record circuit power control output.
Input
Test mode setting input 1.
Input
Test mode setting input 0.
Input
Kana conversion/Kana input existence/nonexistence discrimination.
Output
P.U detection sensitivity switching output.
Output
RF_LSI power supply ON/OFF control output.
Output
Beep sound pulse output.
Output
RF amp gain pllarity switching output.
Output
RF amp TE polarity switching output.
Output
Internal operation status monitor.
Output
Audio IC data clock output.
Output
Audio IC serial data output.
Output
Charge control.
Output
Unit indication data output.
Output
Unit display strobe output.
Output
Unit indication data clock output.
Output
Audio IC output stage control output.
Output
Reserve
Input
Track cross signal/focus drive detection.
Input
Spindle motor FG pulse detection input.
Input
System LSI interruption.
Input
Disc record inhibition switch input.
Input
Disk cap opens and closes detection/it is started and required.
Output
Reserve
A/D and D/A converter ground potential.
Output
P.U. laser power setting output.
Output
Reserve
Input
Remote control button operation detection input.
Input
Ambient temperature detection input.
Input
Unit button operation detection input 2.
Input
Unit button operation detection input 1.
Input
Remote control button operation detection input.
Input
Lithium battery voltage detection input.
Input
DC IN voltage detection input.
Input
DC voltage detection input.
A/D and D/A converter reference voltage.
Input
A/D and D/A converter positive power supply.
Input
Operation mode selection input 0.
Input
Operation mode selection input 1.
Sub clock (not used).
– 41 –
MD-MT877/MD-MT877C
Function

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