Sharp MD-MT20, Руководство по обслуживанию

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MD-MT20/20C/20W
– 40 –
1 P12/TCLKA CIN Input Track cross signal/focus drive detection
2 TCLKB SPIN Input Spindle motor FG pulse detection input
3 P14 CHGON Output Ni-MH battery charge ON output
4 P15 DISCPR Input Disc record inhibition switch input
5 TIOCA2 SPWDS Input Spindle motor FG pulse width detection
6 P17 PDCNT Output Inner detection PD current control output
7 Vss VSS — Ground potential
8 TxD0 RMDAT Output Remote control indication data output
9 TxD1 DSPDAT Output Unit indication data output
10 P32 P32 Output Spare [connected to _RPLAY (pin 75)]
11 P33 DSPSTB Output Main unit's display strobe output
12* SCK0 SCK0 Output Serial I/O clock output (not used)
13 SCK1 DSPSCK Output Unit indication data clock output
14 PE0 _EPCS Output EEPROM chip selection output
15 PE1 EEPD Input/Output EEPROM serial data input/output
16 PE2 EEPK Output EEPROM serial clock output
17 PE3 PLVON Output Battery voltage measurement ON output
18 Vss VSS — Ground potential
19 PE4 PCNT1 Outout Vref supply control output of power IC
20 PE5 SYRS Output System LSI register selection output
21 PE6 _SYRD Output System LSI read enable output
22 PE7 _SYWR Output System LSI write enable output
23-30 PD0-PD7 SYD0-SYD7 Input/Output System LSI parallel data bus
31 Vss VSS — Ground potential
32 PC0 RCLAT Output Record audio IC data latch output
33 PC1 _MCPGI Input Microphone plug insertion detection input
34 PC2 _INPGI Input Line/digital plug insertion detection
35 PC3 INPGCK Input Line/digital plug type detection
36 PC4 RCPCNT Input/Output Record circuit power control output
37* PC5 TEST1 Input Test mode setting input 1
38* PC6 TEST0 Input Test mode setting input 0
39 PC7 JPNP Input Kana conversion/Kana input existence/nonexistence discrimination
40 Vcc VCC — Positive power supply
41* PB0 PBO Output Spare 0
42 PB1 _LCDRST Output LCD driver reset output
43 PB2 PBLAT Output Audio IC data latch output
44 PB3 LDON Output P.U. laser ON/OFF control output
45 PB4 OPICGA Output P.U. detection sensitivity selection output
46 PB5 RFLAT Output RF amplifier IC data latch output
47 PB6 RACLK Output RF/Audio IC data clock output
48 PB7 RADAT Output RF/Audio IC serial data output
49 Vss VSS — Ground potential
50 PA0 _ELON Output EL light control output
51 PA1 PLVGIN Output Battery voltage detection gain select output
52 PA2 _REC Input Unit REC button operation detection input
53 PA3 PBOPON Output Audio IC output stage control output
54 P20 _DCEXT Input DC-IN detection input
55 P21 _KHOLD Input Unit key hold switch input
56 TIOCC3 BUZOUT Output Beep sound pulse output
57 MD0 MD0 Input Operation mode selection input 0
IC401 RH-iX0298AWZZ: System Microcomputer (IX0298AW) (1/3)
FUNCTION TABLE OF IC
Pin No.
Function Port Name Terminal Name Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.