Harman Kardon HD750 Technical Manual page 37

Pin Functions
Pin Name Description
1 PB1 No connection
2 PB0 No connection
3 AVSS Connected 0V
4 TEST Connected 0V
5 X2 No connection
6 X1 Connected 5V
7 VSS MCU ground line; connected to 0V
8 OSC1 10MHz crystal input
9 OSC2 10MHz crystal input
10 RES MCU reset line; 0V = reset; 5V = normal operation
11 P90 No connection
12 OP_SW CD door open position switch; 0V=door open
13 CL_SW CD door close position switch; 0V=door close
14 MTR_CL CD door close motor control line
15 MTR_OP CD door open motor control line
16 S0S1 CD DSP SUBQ ready input; high pulse for SUBQ ready
17 P60 No connection
18 P61 No connection
19 CDRW CDRW RF gain control; 0V=CDRW
20 PUSW Laser pickup inner switch; 5V=pickup at inner position
21 XRST CD DSP reset line; 0V = DSP reset
22 STAT CD DSP internal status output
23 DMUTE CD DSP mute control; 5V = mute on
24 SUBQ SUBQ output
25 SQCK SUBQ output serial clock
26 TLOCK CD DSP track lock status; 0V = locked
27 FLOCK CD DSP focus lock status; 0V = locked
28 SENSE CD DSP internal status
29 MLD CD DSP command latch
30 MDATA CD DSP serial command data
31 MCLK CD DSP serial command clock
32 P57 No connection
33 VCC MCU power supply; connected to 5V
34 DAC.LD PCM1732 serial command latch
35 DAC.CLK PCM1732 serial command clock
36 DAC.DATA PCM1732 serial command data
37 DACRST PCM1732 reset pin; 0V = reset
38 POWER Servo power on/off control; 5V = power on
39 P80 No connection
40 P81 No connection
41 P82 No connection
42 P83 No connection
43 HDCD HDCD decoding status from PCM1732; 5V = HDCD
37
HD750