Sharp CD-MD3000H Service Manual page 106

CD-MD3000H/CD-MD3000W
IC1401 RH-iX0349AWZZ: MD System Microcomputer (IX0349AW) (1/2)
Terminal Name Input/Output
Pin No.
1 4M/16M
2 64M
3 LDVAR
4* ADJS
5 CIN
6* NC
7 UNLOCK
8 BYTE
9 CNVss
10* STID OUT
11* SEACH OUT
12 RESET
13* NC
14 Vss
15 MCCK
16 Vcc
17 P85
18 DINT
19 SFSY
20 ST-ID
21 SERCH
22 MDRMUT
23* NC
24 DSENSE
25 P-DOWN
26 HD ON
27 EEPRO
28 HFON
29 EEPK
30 EEPD
31 MD DATA
32 K DATA
33 DSCK
34 DSTB
35* NC
36 SBO
37 SBCK
38 DISC
39 R/P
40 FOK
41 FLASH L
42 SGAIN
43 SYRS
44 SYRD
45 SYWR
46 FLASH H
47 SYS D7
48 SYS D6
49 SYS D5
50 SYS D4
51 SYS D3
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Input 4M/16M DRAM selection input
Input 64M DRAM selection input
Output LDVAR (laser power adjustment output)
Output ADJS (for automatic adjustment step check)
Input CIN (track count signal input)
– (Output) Not used
Input ERR input (UNLOCK of MD LSI monitor PLL)
Input GND
Input GND
Output ST-ID output
Output MD search output
Input RESET input
– Clock output
– GND
Input EXTAL (8.4672MHz)
– +3.15V
Input Input output port P85
Input DINT (Interrupt input from MD-LSI)
Input Subcode communication frame synchro Interrupt input
Input ST-ID input (MD-ON)
Input CD search input (Synchronous REC interrupt input)
Output MD RMUT output (MOTOR DRIVER MUTE)
Output Not used
Input DSENSE (servo sense input from MD-LSI)
Input P-DOWN (blackout detection)
Output HDON (magnetic head power ON/OFF output)
Output EEPROM protect release output
Output HFON
Output EEPROM serial clock output
Input/Output EEPROM data input output
Output MD computer data input output
Input System computer data input
Input System computer clock input
Output DSTB (system computer communication possible and during communication)
Output Not used
Input Subcode serial data input
Output Subcode communication serial clock output
Output DISC
Output R/P output (REC/PLAY selection)
Input FOK (focus servo condition monitor input)
Input Flash write selection
Output SGAIN
Output MD LSI resister select signal output
Output SYRD (MD-LSI read signal output)
Output SYWR (MD-LSI write signal output)
Input Flash write selection
Input/Output SYS D7 (data bus 7)
Input/Output SYS D6 (data bus 6)
Input/Output SYS D5 (data bus 5)
Input/Output SYS D4 (data bus 4)
Input/Output SYS D3 (data bus 3)
Function
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