Pioneer DVR-104, Service Manual

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DVR-104
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No. Pin Name I/O Pin Function
17 DIOW I/O Write input signal of host interface It becomes STOP signal during Ultra DMA burst.
18 HDMARQ O DMA request signal (3-state)
19 DVDD25
−
2.5V positive power supply for digital
20 HDD15 I/O Data bus for host interface
21 HDD0 I/O Data bus for host interface
22 HDD14 I/O Data bus for host interface
23 HDD1 I/O Data bus for host interface
24 DVDD33
−
3.3V positive power supply for digital
25 DGND
−
Digital GND
26 HDD13 I/O Data bus for host interface
27 HDD2 I/O Data bus for host interface
28 HDD12 I/O Data bus for host interface
29 HDD3 I/O Data bus for host interface
30 HDD11 I/O Data bus for host interface
31 HDD4 I/O Data bus for host interface
32 HDD10 I/O Data bus for host interface
33 HDD5 I/O Data bus for host interface
34 DVDD33
−
3.3V positive power supply for digital
35 DGND
−
Digital GND
36 HDD9 I/O Data bus for host interface
37 HDD6 I/O Data bus for host interface
38 HDD8 I/O Data bus for host interface
39 HDD7 I/O Data bus for host interface
40 HRESET I Host reset input
41 TCK I Test pin Be sure to connect to GND.
42 TMS I Test pin Be sure to connect to GND.
43 TAPCLK I Test pin Be sure to connect to GND.
44 TESTSE I Test pin Be sure to connect to GND.
45 DVDD25
−
2.5V positive power supply for digital
46 MON3 O For monitor the test signal
47 MON2 O For monitor the test signal
48 MON1 O For monitor the test signal
49 MON0 O For monitor the test signal
50 MD15 I/O Data bus of buffer memory interface
51 MD0 I/O Data bus of buffer memory interface
52 MD14 I/O Data bus of buffer memory interface
53 MD1 I/O Data bus of buffer memory interface
54 DVDD33
−
3.3V positive power supply for digital (buffer memory block)
55 DGND
−
Digital GND (buffer memory block)
56 MD13 I/O Data bus of buffer memory interface
57 MD2 I/O Data bus of buffer memory interface
58 MD12 I/O Data bus of buffer memory interface
59 MD3 I/O Data bus of buffer memory interface
60 DGND
−
Digital GND
61 MD11 I/O Data bus of buffer memory interface
62 MD4 I/O Data bus of buffer memory interface
63 MD10 I/O Data bus of buffer memory interface
64 MD5 I/O Data bus of buffer memory interface
65 DVDD33
−
3.3V positive power supply for digital (buffer memory block)
66 DGND
−
Digital GND (buffer memory block)
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