Bose CD-20 - Page 63

63
CD MECHANISM IC PIN CONFIGURATION TABLES
IC 801 (CXD2517Q) Digital Signal Processor Table
Pin
No.
I/O Terminal
Name
Description
1 I FOK Focus OK input. Used for SENS
output and the servo auto sequencer
2NC
3 O MDP Spindle motor servo control
4NC
5NC
6 I Test Test pin. Normally GND.
7 O FILO Master PLL (slave=digital PLL) filter
output.
8 I FILI Master PLL filter input.
9 O PCO Master PLL charge pump output.
10 - Vss GND.
11 - AVss Analog GND.
12 I CLTV Master VCO control voltage input.
13 - AVdd Analog power supply (+5).
14 I RF EFM signal input.
15 I BIAS Constant current input of asymmetry
circuit.
16 I ASYI Asymmetry comparator voltage input.
17 O ASYO EFM full-swing output
(low=Vss, high=Vdd)
18 I ASYE Low: asymmetry circuit off;
High: asymmetry circuit on.
19 O WDCK D/A interface. Word clock f=2fs
20 O LRCK D/A interface. LR clock f=fs
21 O PCMD D/A interface. Serial data (two's
complement, MSB first).
22 O BCK D/A interface. Bit clock.
23 NC
24 NC
25 NC
26 - Vdd Power supply (+5V).
27 O GFS GFS output.
28 NC
29 NC
30 NC
31 NC
32 NC
33 NC
34 I XTAI 16.9344 MHz crystal oscillation circuit
input, or 33.8688 MHz input.
35 NC
36 I XTSL Crystal selection input. Set low when
the crystal is 16.93444 MHz, high
when 33.8688 MHz.
37 NC
38 NC
39 NC
40 O EMPH Outputs high signal when the
playback disc has emphasis, low
signal when no emphasis.
41 NC
42 - Vss GND.