Sony HCD-GZR7D Service Manual page 87

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• IC Pin Function Descriptions
DMB18 BOARD (2/5) IC102 CXD9894R
(CD/DVD RF AMP, FOCUS/TRACKING ERROR AMP, DVD SYSTEM PROCESSOR, DIGITAL SERVO PROCESSOR)
Pin No. Pin Name
1
2
3
4
5
6
7
8
9
10 DVDRFIP
11
12
13
14
15
16
17
18
19, 20 MDI1, MDI2
21, 22 LDO2, LDO1
23
24
TE 25
L 13942296513
26
27
28
29
30
31
32
33
34
35
36
37
38 TROPENPWM
39
40
41
42
43
44
45
46 USB_VDD3
47 USB_VSS
48 PAD_VRT
49 USB_VDD18
www
50 USB_VSS
51 DIR_ERROR
52 DIR_AUDIO
.
53
54
55
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I/O
OSN O RF offset cancellation capacitor connecting pin
RFGC O RF AGC loop capacitor connecting for DVD-ROM
IREF I Current reference input
AVDD3 — Analog power supply pin (+3.3 V)
AGND — Analog ground
DVDA I AC coupled input path A
DVDB I AC coupled input path B
DVDC I AC coupled input path C
DVDD I AC coupled input path D
I AC coupled DVD RF signal input RFIP
MA I DC coupled main-beam RF signal input A
MB I DC coupled main-beam RF signal input B
MC I DC coupled main-beam RF signal input C
MD I DC coupled main-beam RF signal input D
SA I DC coupled sub-beam RF signal input A (Not used in this set)
SB I DC coupled sub-beam RF signal input B (Not used in this set)
TNI I 3 beam satellite PD signal negative input
TPI I 3 beam satellite PD signal positive input
I Laser power monitor input
O Laser driver output
SVDD3 — Analog power supply pin (+3.3 V)
CSO O Central servo output (Not used in this set)
RFLVL O RFRP low pass output (Not used in this set)
SGND — Ground pin for analog circuitry
V2REFO O Reference voltage 2.8 V output
V2O O Reference voltage 2.0 V output
VREFO O Reference voltage 1.4 V output
FEO O Focus error monitor output (Not used in this set)
TEO O Tracking error monitor output (Not used in this set)
TEZISLV O TE slicing level output
OP_OUT O SPFG via op amp (Op amp output)
OP_INN I Loop back input (Op amp negative input)
OP_INP I Raw SPFG signal input (Op amp positive input)
DMO O Disc motor control output. PWM output
FMO O Feed motor control output. PWM output
O Tray PWM output/tray open output (Not used in this set)
General A/D input t Iop monitor
IOPMON I
TRO O PDM output of tracking servo compensator
FOO O PDM output of focus servo compensator
AGND18 — Analog ground pin for DMPLL
AVDD18 — Analog power supply pin (+1.8 V) for DMPLL
USB_DP I/O USB port DPLUS pin
USB_DM I/O USB port DMINUS pin
— Power supply pin (+3.3 V) for USB
— Ground pin for USB
I/O USB generating reference current
— Power supply pin (+1.8 V) for USB
— Ground pin for USB
x ao
I PLL lock error, input data error detection from DIR (L: non error)
y
I PCM/non PCM detection input from DIR (L: PCM)
i
LIMITSW I Limit switch detection input
MSW O Media switch output (L: CD, H: DVD)
DVDD18 — Power supply pin (+1.8 V) for internal digital circuitry
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HCD-GZR7D/GZR8D/GZR9D
2 9 9 4 2 8
Description
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2 8 9 9
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