Kenwood DV-5050M, Service Manual

Page: 14 / 84

DV-5050M/5900M/DVF-J6050/J6050-G
14
CIRCUIT DESCRIPTION
Port No. Port Name I/O Function
1,9,34,48,53,74,91,98,
111,156,160,166,172, VDD - Digital supply voltage (+3.3V).
179,184,191,197,205
2~4,6~8,10,201
MA0~MA11 O SDRAM address 0~11
203,204,206,207
5,19,24,29,44,52,58,
68,84,95,107,151,
VSS - Digital ground.
157,163,169,176,182,
186,194,200,208
11,13,15~18,20~23 TEST0~TEST9 O Test terminal.
12 XRST I System reset input. L : Reset
14,39,63,79,87,105,
LVDD - Digital supply voltage (+1.8V) for internal logic.
146,174,188,202
25 HMD1 I Select signal 1 from DVD microcomputer.
26 HMD0 I Select signal 0 from DVD microcomputer.
27 XHINT O Interruption to DVD microcomputer. L : Active
28 XDK O Acknowledgment to DVD microcomputer. L : Active
30 XWR I Write enable from DVD microcomputer.
31 XRD I Read enable from DVD microcomputer.
32 XCS I Chip select from DVD microcomputer.
33 HCLK I Clock input from DVD microcomputer.
35~38,40~43,45~47 HA1~HA11 I Address input from DVD microcomputer.
49~51,54~57
HD0~HD15 I/O DVD microcomputer data bus 0~15.
59~62,64~67,69
70 AUDSTR I Valid signal of bit stream input data.
71 VSTR I Clock signal input for bit stream.
72 VRQ O Request of program stream.
73 AVRTM I Sector separation signal.
75~78,80~83 STD0~STD7 I Bit stream parallel input 0~7.
85 IECOUT O IEC958 format data output.
86,92~94 ADOUT(0~3) O Audio data output (0~3).
88 DACCK O Over sampling DAC clock output.
89 LRCK O LR clock output.
90 SRCK O Bit clock output.
96 CLKMON O Clock output.
97 CLK121 I External clock (121.5MHz) input. (Unused)
99 CLK27 I System clock input (27MHz).
100 PLLAVDD - Main PLL supply voltage (+3.3V).
101 TCPOUT 0 Unused.
102 PLLAVSS - Connected to digital ground.
103 CKIO I Decode clock change-over.
104 PLLVDD - Supply voltage (+1.8V) of internal logic for main PLL.
106 CLK81 - Connected to digital ground.
108 APLLVDD - Supply voltage (+1.8V) of internal logic for Audio PLL.
109 ATCPOUT O Unused.
110 EXTCK I External FS384 input terminal.
112 APLLAVDD - Supply voltage (+3.3V) for Audio PLL.
113 ATVROUT O Unused.
114 AVCOIN - Connected to digital ground.
115 APLLAVSS - Connected to digital ground.
116 VREFB I DAC reference voltage input for C signal.
117 IREFB I DAC bias current setting port for C signal.
118 COMPB I Capacitance connection for DAC (C signal) stabilization.
119 VBOUT O C signal output for DAC.
6-2 Port Function of AV decoder : MN677533MP (X35, IC301) DV-5050M/DVF-J6050 only
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