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HCD-GZR888D/GZR999D
73
• IC Pin Function Descriptions
DMB19 BOARD (2/4) IC101 CXD9971R(LE)
(CD/DVD RF AMP, FOCUS/TRACKING ERROR AMP, DVD SYSTEM PROCESSOR, DIGITAL SERVO PROCESSOR)
Pin No.
Pin Name
I/O
Description
1
RF_A
I
RF main beam (C) signal input from the optical pick-up block
2
RF_B
I
RF main beam (B) signal input from the optical pick-up block
3
RF_C
I
RF main beam (A) signal input from the optical pick-up block
4
RF_D
I
RF main beam (D) signal input from the optical pick-up block
5
RF_E
I
RF sub beam (F) signal input from the optical pick-up block
6
RF_F
I
RF sub beam (E) signal input from the optical pick-up block
7
AVDD18_2
—
Power supply pin (+1.8 V)
8
AVDD33_1
—
Power supply pin (+3.3 V)
9
XTALI
I
System clock signal input (27 MHz)
10
XTALO
O
System clock signal output (27 MHz)
11
AGND33
—
Ground
12
V20
O
Reference voltage (+2 V) output for the optical pick-up block
13
V14/VREFO
O
Reference voltage (+1.4 V) output
14
REXT
I
Current reference signal input
15, 16
MDI1, MDI2
I
Laser power monitor signal input from the optical pick-up block
17, 18
LDO1, LDO2
O
Laser diode drive signal output for the optical pick-up block
19
AVDD33_2
—
Power supply pin (+3.3 V)
20
DMO
O
Spindle motor control signal output for the motor driver
21
FMO
O
Sled motor control signal output for the motor driver
22
MUTE4
O
Mute signal output for the coil/motor driver (for spindle motor)
23
MSW
O
CD/DVD select signal output (L: CD, H: DVD)
24
TRO
O
Tracking coil control signal output for the coil driver
25
FOO
O
Focus coil control signal output for the coil driver
26
EEWP
O
Write enable signal output for the EEPROM
27, 28
USB_DP, USB_DM
I/O
Two-way audio serial data input/output with the USB controller
29
VDD33_USB
—
Power supply pin (+3.3 V)
30
VSS33_USB
—
Ground
31
PAD_VRT
I/O
USB generating reference current signal input/output
32
VDD18_USB
—
Power supply pin (+1.8 V)
33
SCL
O
Serial clock signal output for the EEPROM
34
SDA
I/O
Two-way serial data input/output with the EEPROM
35
IFSDI
I
Serial data input from the system control
36
SF_CS#
O
Chip select signal output for the SF-ROM
37
SF_DO
O
Serial data output for the SF-ROM
38
SF_DI
I
Serial data input from the SF-ROM
39
SF_CK
O
Serial clock signal output for the SF-ROM
40
IFSCK
O
Serial data transfer clock signal output for the system control
41
IFSDO
O
Serial data output for the system control
42
ICE
I
ICE mode enable setting pin (Not used in this set)
43
PRST#
I
Reset signal input from the system control (L: reset)
44
IR
I
IR control signal input (Not used in this set)
45 to 49
RD0 to RD4
I/O
Two-way data bus input/output with the 64M SDRAM
50
DVDD33
—
Power supply pin (+3.3 V)
51 to 53
RD5 to RD7
I/O
Two-way data bus input/output with the 64M SDRAM
54
DVDD18
—
Power supply pin (+1.8 V)
55
DQM0
O
Data mask signal output for the 64M SDRAM
56 to 59
RD15 to RD12
I/O
Two-way data bus input/output with the 64M SDRAM
60
DVSS33
—
Ground
61 to 64
RD11 to RD8
I/O
Two-way data bus input/output with the 64M SDRAM
65
DQM1
O
Data mask signal output for the 64M SDRAM
66
RCLK
O
Clock signal output for the 64M SDRAM
67
RA11
O
Address signal output for the 64M SDRAM
68
DVDD33
—
Power supply pin (+3.3 V)
69 to 74
RA9 to RA4
O
Address signal output for the 64M SDRAM
75
RWE#
O
Write enable signal output for the 64M SDRAM
76
CAS#
O
Column address strobe signal output for the 64M SDRAM