Philips AX7201, Руководство по обслуживанию, Страница: 10 / 24

MN662786SB – DIGITAL SIGNAL PROCESSOR FOR CD
Pin Name Direction Description
1 DRVDD +2.6V power supply for DRAM interface
2 D0 signal processor
↔
DRAM DRAM data I/O signal 0
3 D1 signal processor
↔
DRAM DRAM data I/O signal 1
4 NWE signal processor
→
DRAM DRAM write enable signal
5 NRAS signal processor
→
DRAM DRAM RAS control signal
6 D2 signal processor
↔
DRAM DRAM data I/O signal 2
7 D3 signal processor
↔
DRAM DRAM data I/O signal 3
8 NCAS0 signal processor
→
DRAM DRAM CAS control signal 0
9 NCAS1 signal processor
→
DRAM DRAM CAS control signal 1
10 A8 signal processor
→
DRAM DRAM address signal 8
11 A7 signal processor
→
DRAM DRAM address signal 7
12 A6 signal processor
→
DRAM DRAM address signal 6
13 A5 signal processor
→
DRAM DRAM address signal 5
14 A4 signal processor
→
DRAM DRAM address signal 4
15 A9 signal processor
→
DRAM DRAM address signal 9
16 A0 signal processor
→
DRAM DRAM address signal 0
17 A1 signal processor
→
DRAM DRAM address signal 1
18 A2 signal processor
→
DRAM DRAM address signal 2
19 A3 signal processor
→
DRAM DRAM address signal 3
20 DVSS2 GND ground for digital circuits
21 DVDD2 +1.8V power supply for digital circuits
22 SPOUT signal processor
→
spindle motor driver signal output
23 TRVP signal processor
→
traverse drive output (+)
24 TRVM signal processor
→
traverse drive output (-)
25 TRP signal processor
→
tracking drive output (+)
26 TRM signal processor
→
tracking drive output (-)
27 FOP signal processor
→
focus drive output (+)
28 FOM signal processor
→
focus drive output (-)
29 IOVDD1 +2.6V I/O power supply
30 TBAL signal processor
→
tracking balance adjustment output
31 FBAL signal processor
→
focus balance adjustment output
32 FE
→
signal processor focus error signal input
33 TE
→
signal processor tracking error signal input
34 RFENV
→
signal processor RF envelope signal input
35 OFT
→
signal processor off-track signal input
36 NRFDET
→
signal processor RF detection signal input
37 BDO
→
signal processor dropout signal input
38 LDON signal processor
→
laser on signal output
39 ARF
→
signal processor RF signal input
40 IREF
→
signal processor reference current input
41 ADPVCC
→
signal processor A/D converter reference voltage input
42 DSLF signal processor
→
DSL loop filter
43 DRF
→
signal processor DSL bias
44 PLLF signal processor
→
PLL loop filter
45 VCOF signal processor
→
jitter-free VCO loop filter
46 AVDD2 +2.6V power supply for analog circuits
47 AVSS2 GND ground for analog circuits
48 OUTL signal processor
→
left channel audio output
49 AVSS1 GND ground for audio output stage
50 OUTR signal processor
→
right channel audio output
51 AVDD1 +3.0V power supply for audio output stage
52 FSEL
→
signal processor noise filter for microcontroller interface on/off selection input
53 TMOD1 GND test input pin 1
54 TMOD2 GND test input pin 2
55 FLAG signal processor
→
flag signal output
56 IPFLAG signal processor
→
interpolation flag signal output
57 EXT0 signal processor
↔
expansion I/O port 0
58 EXT1 signal processor
↔
expansion I/O port 1
59 IOVDD2 +2.6V I/O power supply
60 TX signal processor
→
digital audio interface signal output
61 MCLK
→
signal processor microcontroller command clock signal input
62 MDATA
→
signal processor microcontroller command data signal input
63 MLD
→
signal processor microcontroller command load signal input
64 BLKCK signal processor
→
subcode block clock signal output (f=75Hz at normal speed)
65 PWMSEL signal processor
↔
PWM output mode selection input
66 SMCK signal processor
→
4.236MHz / 8.4672MHz clock signal output
67 DMUTE signal processor
↔
muting input
68 STAT signal processor
→
status signal output
69 NRST
→
signal processor reset input
70 SPPOL signal processor
→
spindle motor drive signal output
71 PMCK signal processor
→
88.2kHz clock signal output
72 NCLDCK signal processor
→
frame sync signal output (f=7.35kHz at normal speed)
73 SUBC signal processor
→
subcode serial output
74 SBCK
→
signal processor subcode serial output clock input
75 NTEST +2.6V test input pin
76 X2 signal processor
→
crystal oscillator output pin (f=16.9344Hz)
77 X1
→
signal processor crystal oscillator output pin (f=16.9344Hz)
78 DVSS1 GND ground for digital circuits
79 DVDD1 +1.8V power supply for digital circuits
80 EXT2
→
signal processor Expansion I/O port 2
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