Sony HCD-DX400 Service Manual page 18

HCD-DX400
• IC Pin Function Description
MAIN BOARD IC2 CXD9971R(LE) LQFP (RF AMP, SERVO DSP, MPEG DECODER)
Pin No. Pin Name I/O
1 RFA I RF main beam input A
2 RFB I RF main beam input B
3 RFC I RF main beam input C
4 RFD I RF main beam input D
5 RFE I RF sub beam input F
6 RFF I RF sub beam input E
7 AVDD18_2 - Analog 1.8V power
8 AVDD33_1 - Analog 3.3V power
9 XTALI I 27MHz crystal input
10 XTALO O 27MHz crystal output For Eastech use only
11 AGND33 - Analog Ground
12 V20 O Reference voltage 2.0V
13 V14 O Reference voltage 1.4V
Current reference input. It generates reference current for RF path. Connect an external 15K
14 REXT I
resistor to this pin and AVSS
15 MDI1 I Laser power monitor input
16 MDI2 I Laser power monitor input
17 LDO1 O Laser driver output (for CD)
18 LDO2 O Laser driver output (for DVD)
19 AVDD33_2 - Analog 3.3V power
20 DMO O Disk motor control output. PWM output For Eastech use only
21 FMO O Feed motor control. PWM output
22 TRAY_OPEN O Tray PWM output/Tray open output
23 TRAY_CLOSE O Tray PWM output/Tray close output
24 TRO O Tracking servo output. PDM output of tracking servo compensator
25 FOO O Focus servo output. PDM output of focus servo compensator
26 FG I 1) Motor Hall sensor input
27 USB_DP I USB port DPLUS analog pin
28 USB_DM I USB port DMINUS analog pin
29 VDD33_USB - USB Power pin 3.3V
30 VSS33_USB - USB ground pin
31 PAD_VRT I USB generating reference current
32 VDD18_USB - USB Power pin 1.8V
33 GPIO3 I/O Serial for MCU communication
34 GPIO4 I General purpose IO 4
35 GPIO6 I General purpose IO 6
36 SF_CS_ O Serial Flash Chip Select
37 SF_DO O Serial Flash Dout
38 SF_DI I Serial Flash Din
39 SF_CK O Serial Flash Clock
40 UP1_6 O SPI CLK for PT6311
41 UP1_7 I/O SPI DA for PT6311
42 ICE I Microcontroller ICE mode enable Not used
43 PRST# I Power on reset input, active low
44 IR I IR control signal input
45 to 49 RD0 to RD4 I/O DRAM data 0 to DRAM data 4
50 DVDD33 - 3.3V power pin for internal digital circuitry
51 to 53 RD5 to RD7 I/O DRAM data 5 to DRAM data 7
54 DVDD18 - 1.8V power pin for internal digital circuitry
55 DQM0 O Data mask 0
56 to 59 RD15 to RD12 I/O DRAM data 15 to DRAM data 12
60 DVSS - 3.3V Ground pin for internal digital circuitry
61 to 64 RD11 to RD8 I/O DRAM data 11 to DRAM data 8
65 DQM1 O Data mask 1
66 RCLK O Dram clock
67 RA11 O DRAM address bit 11
68 DVDD33 - 3.3V power pin for internal digital circuitry
HCD-DX400
Description
18
Pin No. Pin Name I/O
69 to 74 RA9 to RA4 O DRAM address 9 to DRAM address 4
75 RWE# O DRAM Write enable, active low
76 CAS# O DRAM column address strobe, active low
77 RAS# O DRAM row address strobe, active low
78 BA0 O DRAM bank address 0
79 DVSS18 - 1.8V Ground pin for internal digital circuitry
80 BA1 O DRAM bank address 1
81 RA10 O DRAM address 10
82, 83 RA0, RA1 O DRAM address 0, DRAM address 1
84 DVDD33 - 3.3V power pin for internal digital circuitry
85, 86 RA2, RA3 O DRAM address 2, DRAM address 3
87 GPIO7 I/O No used
88 GPIO8 I/O No used
89 GPIO9 I Code downloading and debugging
90 DVDD18 - 1.8V power pin for internal digital circuitry
91 GPIO10 O Code downloading and debugging
92 GPIO11 I/O Serial for MCU communication
93 SPDIF O No used
94 GPIO13 O SPI CS for PT6311
95 DACVDDC - 3.3V power pin for video DAC circuitry
96 VREF - Bandgap reference voltage
97 FS - Full scale adjustment (suggest to use 560 ohm) For Eastech use only
98 DACVSSC - Ground pin for video DAC circuitry
99 CVBS O CVBS video output
100 DACVDDB - 3.3V power pin for video DAC circuitry
101 DACVDDA - 3.3V power pin for video DAC circuitry
102 Y/G O Y video output
103 B/CB/PB O PB video output
104 R/CR/PR O PR video output
105 AADVSS - Ground pin for 2ch audio ADC circuitry
106 EAKIN2 O No used
107 ADVCM - 2ch audio ADC reference voltage C
108 AKIN1 I Audio ADC input 1
109 AADVDD - 3.3V power pin for 2ch audio ADC circuitry
110 APLLVDD3 - 3.3V Power pin for audio clock circuitry
111 APLLCAP - APLL external capacitance connection
112 ADACVSS2 - Ground pin for audio DAC circuitry
113 ADACVSS1 - Ground pin for audio DAC circuitry
114 ARF / LFE O MT1389L reset MCU at upgread MCU software
115 ARS O No used
116 AR O Audio DAC right channel output
117 AVCM - Audio DAC reference voltage
118 AL O Audio DAC left channel output
119 ALS I LOADER LIMIT detection
120 ALF /CENTER O No used
121 ADACVDD1 - 3.3V power pin for audio DAC circuitry
122 ADACVDD2 - 3.3V power pin for audio DAC circuitry
123 AVDD18_1 - Analog 1.8V power
124 AGND18 - Analog Ground
125 RFIP I AC coupled DVD RF signal input RFIP
126 RFIN I AC coupled DVD RF signal input RFIN
127 RFG I Main beam, RF AC input path
128 RFH I Main beam, RF AC input path
18
Description