Function Table Of Ic - Sharp MD-MT270HS/BK Service Manual

Portable minidisc recorder
Table of Contents

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IC401 RH-iX0561AWZZ :System Microcomputer (IX0561AW) (1/2)
Pin No.
Port Name
Terminal Name Input/Output
1*
P9_4/DA1
MCMON
2
P9_3/DA0
LDVAR
3
P9_2
EPRT
4
TB1IN
SPIN
5
TB0IN
CIN
6
BYTE
VSS
7
CNVSS
VSS
8
P8_7
RCLAT
9
P8_6
SYCPW
10
RESET
_RESET
11
XOUT
EXTAL
12
VSS
VSS
13
XIN
XTAL
14
VCC
VCC
15
P8_5/NMI
NMI
16
INT2
_DINT
17
INT1
_PLAY
18
INT0
_REC
19*
P8_1/TA4IN
20
P8_0
RCPCNT
21
TA3IN
_RPLAY
22
P7_6
23
P7_5
PBOPON
24
TA2OUT
BUZOUT
25*
P7_3
CHGON
26
P7_2/TA1OUT
27*
P7_1/TB5IN
28*
P7_0/TA0OUT
29
P6_7/TXD1
DSPDAT
30
P6_6/RXD1
DSPSTB
31
P6_5/CLK1
DSPSCK
32*
P6_4
TEST0
33
P6_3/TXD0
RMDAT
34
P6_2/RXD0
PCILD
35*
P6_1/CLK0
SCK0
36
P6_0
OPICGA
37
P5_7/CLKOUT PCLK
38
P5_6
SGAIN
39
P5_5
DISCP
40
P5_4
JPNP
41*
P5_3
42*
P5_2
43
P5_1
RACLK
44*
P5_0
TEST1
45
P4_7
_MCPGI
46
P4_6
_INPGI
47
P4_5
INPGCK
48
P4_4
SENSE
49
P4_3
SLCNT1
50
P4_2
SLCNT2
In this unit, the terminal with asterisk mark (*) is open terminal which is not connected to the outside.

FUNCTION TABLE OF IC

Output
Internal operation status monitor
Output
P.U. laser power setting output
Output
EEPROM write protection
Input/Output
Spindle motor FG pulse detection input
Output
Track cross signal/focus drive detection
Ground potential
Ground potential
Output
Record audio IC data latch output
Output
System LSI core power on/off
Input
Microcomputer hard reset input
Crystal connection terminal
Ground potential
Crystal connection terminal
Positive power supply
Input
Nonmaskable interruption input (not used)
Input
System LSI interruption
Input
Unit PLAY button operation detection input
Input
Unit REC button operation detection input
Output
Reserve
Input/Output
Record circuit power control output
Input
Remote control PLAY key operation detection input
Output
Reserve
Output
Audio IC output stage control output
Output
Beep sound pulse output
Output
Battery charge ON/OFF control output
Output
Reserve
Output
Reserve
Output
Reserve
Output
Unit indication data output
Output
Main unit display strobe output
Output
Unit indication data clock output
Input
Test mode setting input 0
Output
Remote control indication data output
Input/
IF data input
Output
Serial I/O clock output (not used)
Output
P.U detection sensitivity switching output
Output
Power clock
Output
RF amp gain polarity switching output
Output
RF amp TE polarity switching output
Input
Kana conversion/Kana input existence/nonexistence discrimination
Output
Reserve
Output
Reserve
Output
Audio IC data clock output
Input
Test mode setting input 1
Input
Microphone plug insertion detection input
Input
Line/digital plug insertion detection
Input
Line/digital plug type detection
Input/Output
System LSI servo sense input
Output
Stepping control 1
Output
Stepping control 2
– 41 –
MD-MT270H
Function

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