Sony CX-VX55, Руководство по обслуживанию

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65
CX-VX55/VX77
Ver. 1.1
• IC Pin Description
IC301 PS9818 (DIGITAL AUDIO PROCESSOR) (MAIN BOARD (3/5))
Pin No. Pin Name I/O Pin Description
1 IO_VSS — I/O digital ground
2 PLL_DVSS — PLL digital ground
3 PLL_DVDD — PLL peripheral digital power supply (+2.5 V)
4 PLL_XPD I Internal PLL power down signal input (L: active)
5 PLL_CPC I Internal PLL charge pump current selection input (Fixed at H in this set)
6 PLL_AVDD — PLL analog power supply (+2.5 V)
7 PLL_EXT_LPF I/O External PLL low pass filter signal input/output
8 PLL_AVSS — PLL analog ground
9 IO_VSS — I/O digital ground
10 IO_VDD — I/O digital power supply (+3.3 V)
11 MBCK I/O PCM bit clock input/output of main 8-channel audio. (Fixed at L in this set)
12 MLRCK I/O
PCM word clock (left-right clock) input/output of main 8-channel audio.
(Fixed at L in this set)
13 DVDD — Core digital power supply (+2.5 V)
14 DVSS — Core digital ground
15 to 18 MSDIN0 to MSDIN3 I PCM serial data input of main 8-channel audio. (Fixed at L in this set)
19 SBCK I/O PCM bit clock input/output of sub 8-channel audio.
20 SLRCK I/O PCM word clock (left-right clock) input/output of sub 8-channel audio.
21 IO_VSS — I/O digital ground
22 IO_VDD — I/O digital power supply (+3.3 V)
23 to 26 SSDIN0 to SSDIN3 I/O PCM serial data input/output of sub-channel audio.
27 EXT_MUTE I External mute control input (H: active) (Not used in this set)
28 IO_VSS — I/O digital ground
29 IO_VDD — I/O digital power supply (+3.3 V)
30 MIC_MCLK O Main clock output for external microphone input A/D converter. (Not used in this set)
31 MIC_BCK O PCM bit clock output of external microphone. (Not used in this set)
32 MIC_LRCK O PCM word clock (left-right clock) output of external microphone. (Not used in this set)
33 MIC_SDIN I PCM serial data input of external microphone. (Not used in this set)
34 DVDD — Core digital power supply (+2.5 V)
35 DVSS — Core digital ground
36 PWM_SWL_M O Negative PWM output of subwoofer line output. (Not used in this set)
37 PWM_SWL_P O Positive PWM output of subwoofer line output. (Not used in this set)
38 IO_VSS — I/O digital ground
39 IO_VDD — I/O digital power supply (+3.3 V)
40 PWM_HP_R_M O Negative PWM output of headphone right channel.
41 PWM_HP_R_P O Positive PWM output of headphone right channel.
42 DVDD — Core digital power supply (+2.5 V)
43 DVSS — Core digital ground
44 IO_VSS — I/O digital ground
45 PWM_HP_L_M O Negative PWM output of headphone left channel.
46 PWM_HP_L_P O Positive PWM output of headphone left channel.
47 IO_VDD — I/O digital power supply (+3.3 V)
48 PWM1_M O Negative PWM output of channel 1.
49 PWM1_P O Positive PWM output of channel 1.
50 IO_VSS — I/O digital ground
51 PWM2_M O Negative PWM output of channel 2.
52 PWM2_P O Positive PWM output of channel 2.
53 IO_VSS — I/O digital ground
54 PWM3_M O Negative PWM output of channel 3.
55 PWM3_P O Positive PWM output of channel 3.
56 IO_VDD — I/O digital power supply (+3.3 V)