NAD L 70, Service Manual

Page: 14 / 60

2-15
PIN No. Pin Name I/O Function
1,12,23 +VD1 - Digital Power supply. No2.5v
2,13,24 DGND - Digital Ground
3 AUD3 O SPDIF transmitter output/Digital audio output(N.C)
4 WR I Host write strobe pin(connected to GND with an external resistor)
5 RD I Host parallel output enable pin(pulled up with an external resistor)
6 CS_DA I SPI Serial data input pin
7 CS_CK I Serial control clock input pin
8 EMAD7 I/O
9 EMAD6 I/O
10 EMAD5 I/O
11 EMAD4 I/O Serial data IN/OUTPUT pins(pulled up with an external resistor)
14 EMAD3 I/O
15 EMAD2 I/O
16 EMAD1 I/O
17 EMAD0 I/O
18 CS_CE I Host parallel chip select pin
19 SCDIO(AK_DOUT) O Serial control port data ouput pin
20 INTREQ O Control port interrupt request output pin
21 EXTMEM I/O External Memory Chip Selector(pulled up with an external resistor)
22 SDATAN1(SDI) I PCM audio data input number 1 pin
25 SCLKN1(BICK) I PCM audio input bit clock pin
26 LRCLKN1(LRCK) I PCM audio input sample rate clock pin
27 CMPDAT(SDI) I PCM audio data input number 2 pin
28 CMPCLK(BICK) I PCM audio input bit clock pin
29 CREQ(LRCK) I PCM audio input sample rate clock pin
30 CLKIN(XIN) I Master clock input(used external clock)
31 CLKSEL(GND) I DSP clock mode select pin: connect the GND
32 FILT1 Connects to an external filter for the on-chip phase-locked loop
33 FILT1 Connects to an external filter for the on-chip phase-locked loop
34 +2.5V - Analog Power supply for clock generator . No2.5V
35 AGND - Analog ground supply for clock generator PLL.
36 RESET(CS_RST) I Master reset input pin
37 DBDATA - Reserved pin and should be pulled up with an external resistor.
38 DBCLK - Reserved pin and should be pulled up with an external resistor.
39 AUD2(SDO2) O PCM multi-format digital-audio data ouput2 pin
40 AUD1(SDO1) O PCM multi-format digital-audio data ouput1 pin
41 AUD0(SDO0) O PCM multi-format digital-audio data ouput0 pin
42 LRCLK I Audio output sample rate clock pin
43 SCLK(BICK) I Audio ouput bit clock pin
44 MCLK I Audio master clock output pin
AUDIO DSP(CS49326 : IC41)