Kenwood DMC-J3 Service Manual page 7

2. DSP, ACIRC / ATRAC Recoder : CXD2655R (X33 : IC7)
Pin description
Pin No. Pin Name
1 MNT0
2-4 MNT1-3
5 SWDT
6 SCLK
7 XLAT
8 SRDT
9 SENS
10 XRST
11 SQSY
12 TST2
13 DATAI
14 DAVDD
15 AOUTL
16 OSCI
17 OSCO
18 AOUTR
19 DAVSS
20 TST1
21 MUTFGL
22 DOUT
23 XINT
24 DADT
25 LRCK
26 XBCK
27 FS256
28 DVDD
29-39 A03-11
40 DVSS
41 XOE
42 XCAS
43 A09
44 XRAS
45 XWE
46-49 D1-3
50 MVCI
51 ASYO
52 ASYI
53 AVDD
54 BIAS
55 RFI
56 AVSS
57 PDO
58 PCO
59 FILI
60 FILO
61 CLTV
CIRCUIT DESCRIPTION
I/O
I/O Monitor signal interface.
O Monitor output port.
I Data input port of microprocessor serial interface.
I Shift clock input port of microprocessor serial interface.
I Latch input port of microprocessor serial interface. Falling edge=latch.
O Data output port of microprocessor serial interface.
O Status output port of microprocessor by address serial interface.
I Reset. L=reset.
O Disc sub code Q sync/ADIP sync output.
I Test port.
I External audio data input port to DAC.
– Power supply for DAC.
O DAC L-ch output port.
I Oscillation input port(512s=22.5792MHz).
O Oscillation output port.
O DAC R-ch output port.
– DAC GND.
I Test port.
O L-ch zero data detection flag output port.
O Digital audio interface signal output port.
O Interruptive requirement output port.
O Audio data output port to external audio block.
O LRCK(44.1kHz) output port to external audio block.
O Bit clock(2.8224MHz) output port to external audio block.
O 256Fs output port.(11.2896MHz).
– Digital power supply.
O Address output port of DRAM.
– Digital GND.
O Output inable port of DRAM.
O CSA output port of DRAM.
O Address output port of DRAM.
O RAS output port of DRAM.
O Write inable output port of DRAM.
I/O Data bus port of DRAM.
I Clock input port of VCO(784fs).
O Playback EFM full swing output port.(L=Vss).
I Playback EFM comparator slice input port..
– Analog power supply.
I Playback EFM comparator bias current input port..
I Playback EFM rf signal input port..
– Analog GND.
O EFM decoder analog PLL phase comparator output port.
O Playback digital master PLL phase comparator output port.
I Playback digital master PLL filter input port.
O Playback digital master PLL filter output port.
I Playback digital master PLL VCO control voltage input port.
DMC-J3
Description
7