Kenwood DM-3090 Service Manual page 12

DM-3090
IC1401 RX-iX0227AWZZ:MD System Microcomputer (IX0227AW)
Terminal Name
Pin No.
1* P96/ANEX1
2* P95/ANEX0
3 P94/DA1
4* P93/DA0
5* P92/TB2
6 P91/TB1
7 P90/TB0
8 BYTE
9 CNVss
10* P87/X
CIN
11* P86/X
OUT
12 RESET
13* X
OUT
14 Vss
15 X
IN
16 Vcc
17 P85/NMI
18 P84/INT2
19 P83/INT1
20 P82/INT0
21 P81/TA4
22 P80/TA4
23* P77/TA3
24 P76/TA3
25 P75/TA2
26 P74/TA2
27 P73/TA1
28 P72/TA1
29 P71/TA0
30 P70/TA0
31 P67/TXD1
32 P66/RXD1
33 P65/CLK1
34 P64/CTS1/RTS1/
CTS0/CLKS1
35 P63/TXD0
36 P62/RXD0
37 P61/CLK0
38 P60/CTS0/RTS0
39 P57/RDY/CLK
40 P56/ALE
41* WFMI
42 AVCC
43 AGND
44 EFMAGC
45 EFMAGI
46 ATTR
47 GOUT
48 POUT
49 PLCK
50 EFM0
51 X700KO
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
12
CIRCUIT DESCRIPTION
Input/Output
Output Not used
Output Not used
Output LDVAR (laser power adjustment output)
Output ADJS (for automatic adjustment step check)
Output Not used
IN
Input LD SW CK input (interruption input only in single state)
IN
Input ERR input (monitor PLL UNLOCK)
IN
Input GND
Input GND
Output ST-ID Output
Output MD search output
Input RESETInput
— Extal clock output
— GND
Input EXTAL (8.4672 MHz)
— + 3.15V
Input Connect +B
Input DINT (interruption input from MD LSI)
Input DSENSE (servo sense input from MD LSI)
Input ST-ID Input (MD-ON)
Input CD search input (syncro REC suspension input from MD LSI)
IN
Output MD RSW Output
OUT
Input FSW1 (SW power frequency selection)
IN
Output Vari-pitch correspondence given (H)/not given (L)
OUT
Input P-DOWN (power failure detection)
IN
Output HDON (magnetic head current ON/OFF output)
OUT
Output LD+ (loading motor + control output)
IN
Output LD- (loading motor + control output)
OUT
Input CIN (track count signal input)
IN
Input INN SW (inner SW detection input)
OUT
Output R-DATA
Output R-LATCH
Output R-CLK
Output DSTB (system controller communication enable and communication beingexecuted)
Output MD DATA (MD Data Output)
Input K DATA (system controller data input)
Input DSCK (system controller communication clock input)
Input 4M/16M DRAM selection input
Output R/P output (REC/PLAY selection)
OUT
Input FOK (focus servo status monitor input)
Input/Output Not used
Output S2 Ouput
Output S1 Output
Output SYRS (MD-LSI register selection signal output)
Output SYRD (MD-LSI read signal output)
Output SYWR (MD-LSI right signal output)
In/Output SYS D7 (data bus 7)
In/Output SYS D6 (data bus 6)
In/Output SYS D5 (data bus 5)
In/Output SYS D4 (data bus 4)
In/Output SYS D3 (data bus 3)
Function