Read Sharp XL-MP100H (serv.man12) Service Manual online
XL-MP100H
8 – 6
IC801 VHIMN6627933C: CD Digital Signal Processor (MN6627933C) (1/2)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
NOTE: Signals with * are switched to other signals by microcomputer command.
DRAM pins differ in specifications depending on the type and capacity.
Pin No.
Terminal Name
I/O
Function
1
D11
I/O
DRAM data signal input/output 11
2
D10
I/O
DRAM data signal input/output 10
3
D9
I/O
DRAM data signal input/output 9
4
D8
I/O
DRAM data signal input/output 8
5
UDQM
O
SDRAM upper byte data mask signal output
6
SDRCK
O
SDRAM clock signal output
7*
A11
O
DRAM address signal output 11
8
A9
O
DRAM address signal output 9
9
A8
O
DRAM address signal output 8
10
A7
O
DRAM address signal output 7
11
A6
O
DRAM address signal output 6
12
A5
O
DRAM address signal output 5
13
A4
O
DRAM address signal output 4
14
LDQM
O
SDRAM lower byte data mask signal output
15
NWE
O
DRAM write enable signal output
16
NCAS
O
DRAM CAS control signal output
17
NRAS
O
DRAM RAS control signal output
18
NCS
O
SDRAM chip select signal output
19
A3
O
DRAM address signal output 3
20
A2
O
DRAM address signal output 2
21
A1
O
DRAM address signal output 1
22
A0
O
DRAM address signal output 0
23
DRVDD1
I
DRAM interface I/O power supply 1
24
DVSS1
I
Digital circuit GND 1
25
A10
O
DRAM address signal output 10
26*
*BA1
O
SDRAM bank select signal output 1
27
*BA0
O
SDRAM bank select signal output 0
28
DVDD1
I
Internal digital circuit power supply 1
29
SPOUT
O
Spindle drive signal output (absolute value)
30*
*SPPOL
O
Spindle drive signal output (polarized)
31
TRVP
O
Traverse drive signal output (positive)
32*
*TRVM
O
Traverse drive signal output (negative)
33*
*TRVP2
O
Traverse drive signal output 2 (positive)
34*
*TRVM2
O
Traverse drive signal output 2 (negative)
35
TRP
O
Tracking drive signal output (positive)
36*
*TRM
O
Tracking drive signal output (negative)
37
FOP
O
Focus drive signal output (positive)
38*
*FOM
O
Focus drive signal output (negative)
39
IOVDD1
I
Digital I/O power supply 1
40
TBAL
O
Tracking balance adjustment signal output
41
FBAL
O
Focus balance adjustment signal output
42
FE
I
Focus error signal input
43
TE
I
Tracking error signal input
44
ADPVCC
I
Voltage input for monitoring power supply
45
RFENV
I
RF envelope signal input
46
LDON
O
Laser ON signal output
47
NRFDET
I
RF detection signal input
48
OFT
I
Off-track signal input
49
BDO
I
Drop-out signal input
50
AVDD
I
Analog circuit power supply 1
51
IREF
I
Analog reference current input
52
ARF
I
RF signal input
53
DSLF
O
DSL loop filter pin
54
PWMSEL
I
PWM output mode switch input. L: direct H: ternary
55
PLLF
O
PLL loop filter pin (phase comparison output)
56
PLLFO
O
PLL loop filter pin (speed comparison output)
57
AVSS
I
Analog circuit GND 1
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