Sony HCD-GZR333IA, Service Manual

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HCD-GZR333IA
67
• IC Pin Function Descriptions
DMB19 BOARD (2/4) IC101 CXD9970R(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