HCD-GN1300D
74
DMB18 BOARD (3/5) IC102 CXD9894R-A
(CD/DVD RF AMP, FOCUS/TRACKING ERROR AMP, DVD SYSTEM PROCESSOR, DIGITAL SERVO PROCESSOR)
Pin No. Pin Name I/O Desciption
1 OSN O RF offset cancellation capacitor connecting pin
2 RFGC O RF AGC loop capacitor connecting for DVD-ROM
3 IREF I Current reference input
4 AVDD3 – Analog power supply pin (+3.3 V)
5 AGND – Analog ground
6 DVDA I AC coupled input path A
7 DVDB I AC coupled input path B
8 DVDC I AC coupled input path C
9 DVDD I AC coupled input path D
10 DVDRFIP I AC coupled DVD RF signal input RFIP
11 MA I DC coupled main-beam RF signal input A
12 MB I DC coupled main-beam RF signal input B
13 MC I DC coupled main-beam RF signal input C
14 MD I DC coupled main-beam RF signal input D
15 SA I DC coupled sub-beam RF signal input A (Not used in this set)
16 SB I DC coupled sub-beam RF signal input B (Not used in this set)
17 TNI I 3 beam satellite PD signal negative input
18 TPI I 3 beam satellite PD signal positive input
19, 20 MDI1, MDI2 I Laser power monitor input
21,22 LDO2, LDO1 O Laser driver output
23 SVDD3 – Analog power supply pin (+3.3 V)
24 CSO O Central servo output (Not used in this set)
25 RFLVL O RFRP low pass output (Not used in this set)
26 SGND – Ground pin for analog circuitry
27 V2REFO O Reference voltage 2.8 V output
28 V2O O Reference voltage 2.0 V output
29 VREFO O Reference voltage 1.4 V output
30 FEO O Focus error monitor output (Not used in this set)
31 TEO O Tracking error monitor output (Not used in this set)
32 TEZISLV O TE slicing level output
33 OP_OUT O SPFG via op amp (Op amp output)
34 OP_INN I Loop back input (Op amp negative input)
35 OP_INP I Raw SPFG signal input (Op amp positive input)
36 DMO O Disc motor control output. PWM output
37 FMO O Feed motor control output. PWM output
38 TROPENPWM O Tray PWM output/tray open output (Not used in this set)
39 IOPMON I General A/D input t Iop monitor
40 TRO O PDM output of tracking servo compensator
41 FOO O PDM output of focus servo compensator
42 AGND18 – Analog ground pin for DMPLL
43 AVDD18 – Analog power supply pin (+1.8 V) for DMPLL
44 USB_DP I/O USB port DPLUS pin
45 USB_DM I/O USB port DMINUS pin
46 USB_VDD3 – Power supply pin (+3.3 V) for USB
47 USB_VSS – Ground pin for USB
48 PAD_VRT I/O USB generating reference current
49 USB_VDD18 – Power supply pin (+1.8 V) for USB
50 USB_VSS – Ground pin for USB
51 DIR_ERROR I PLL lock error, input data error detection from DIR (L: non error)
52 DIR_AUDIO I PCM/non PCM detection input from DIR (L: PCM)
53 LIMITSW I Limit switch detection input
54 MSW O Media switch output (L: CD, H: DVD)
55 DVDD18 – Power supply pin (+1.8 V) for internal digital circuitry
56 to 62 HA2 to HA8 O Host address output bit 2 to 8
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