Kenwood DV-5050M, Service Manual

Page: 12 / 84

DV-5050M/5900M/DVF-J6050/J6050-G
12
CIRCUIT DESCRIPTION
Port No. Port Name I/O Function
47~51,54~59,61~65 HD0~HD15 I/O DVD microcomputer data bus 0~15.
67 AUDSTR I Valid signal of bit stream input data.
68 ARQ 0 Unused.
69 VSTR I Clock signal input for bit stream.
71 VRQ O Request of program stream.
72 AVRTM I Sector separation signal.
74~78,80~82 STD0~STD7 I Bit stream parallel input 0~7.
84 EXTCK I External FS384 input terminal.
85 APLLVDD - Supply voltage (+2.5V) of internal logic for Audio PLL..
86 P5481 - Audio PLL ground.
87 PHCOPMO O Audio PLL phase comparison output.
88 APLLAVSS - Audio PLL ground.
89 NC - Unused.
90 APLLAVDD - Supply voltage (+3.3V) for Audio PLL..
91 ACKIO - Connected to digital ground.
92 VSS - Digital ground.
93 DCTEST - Connected to digital ground.
94,95 TESTSEL1,0 - Connected to digital ground.
97~102,106,108,109
TEST4~TEST9
O Unused.
TEST3,1,0
103 CLKMON O Unused.
107 RFF O Unused.
110 IECOUT O IEC958 format data output.
111 DMIX O Audio down mix signal output.
113 DACCK O Over sampling DAC clock output
114 LRCK O LR clock output.
115 SRCK O Bit clock output.
117~119 ADOUT(0~2) O Audio data output (0~2).
121 XPOWD I DAC power down control input.
122 VREFC I DAC reference voltage input for C signal.
123 IREFC I DAC bias current setting port for C signal.
124 COMPC I Capacitance connection for DAC (C signal) stabilization.
125 VCOUT O Unused.
126,136 AVDD - Analog supply voltage (+3.3V) for DAC.
127 VREFCB I DAC reference voltage input for CB signal.
128 IREFCB I DAC bias current setting port for CB signal.
129 COMPCB I Capacitance connection for DAC (CB signal) stabilization.
130 VCBOUT O Unused.
131,141 AVSS - Analog ground for DAC.
132 VREFCR I DAC reference voltage input for CR signal.
133 IREFCR I DAC bias current setting port for CR signal.
134 COMPCR I Capacitance connection for DAC (CR signal) stabilization.
135 VCROUT O Unused.
137 VREFY I DAC reference voltage input for Y signal.
138 IREFY I DAC bias current setting port for Y signal.
139 COMPY I Capacitance connection for DAC (Y signal) stabilization.
140 VYOUT O Unused.
143 XYSYNCO I/O Vertical synchronizing signal input/output.
144 XHSYNCO I/O Horizontal synchronizing signal input/output.
146 VCLK O Clock output for digital video data output.
148~155 VD0~VD7 O Digital video data output (0~7).
158,159,161,162
164,165,167,168
MDQ0~MDQ15 I/O SDRAM data bus (0~15).
170,171,173,175
177,178,180,181
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