Aiwa XR-MP50 Service Manual page 40

IC, DAC3550A-C2
Pin No. Pin Name
1 AGNDC
2 AVSS1
3 AVSS0
4 NC
5 OUTL
6 NC
7 OUTR
8 NC
9 AVDD0
10 AVDD1
11 NC
12 XTI
13 XTO
14 CLKOUT
15 SCL
16 SDA
17 VSS
18 VDD
19 MCS1
20 MCS2
21 DEECTRL
22 NC
23 CLI
24 DAI
25 WSI
26 PORQ
27 TESTEN
28 NC
29 AUX2L
30 AUX2R
31 AUX1L
32 AUX1R
33 NC
34 DEEML
35 DEEMR
36 NC
37 FOUTL
38 FOPL
39 FINL
40 NC
41 FOUTR
42 FOPR
I/O
I/O Analog reference voltage.
I VSS 1 for audio back-end.
I VSS 0 for audio output amplifiers.
– Not connected.
O Audio output: headphone left or speaker +. (Not used)
– Not connected.
O Audio output: headphone right or speaker -. (Not used)
– Not connected.
I VDD 0 for audio output amplifiers.
I VDD 1 for audio back-end.
– Not connected.
I Quartz oscillator pin 1.
I/O Quartz oscillator pin 2.
O Clock output.
2
I/O I C clock.
I/O I 2 C data.
– Digital VSS.
– Digital VDD.
2
I I C chip Select 1.
2
I I C chip Select 2.
I Deemphasis on/off control. (Connected to VSS)
– Not connected.
2
– I S bit clock.
2
I I S data.
2
I I S frame identification.
I Power-on reset, active-low.
I Test enable. (Connected to VSS)
– Not connected.
I AUX2 left input for external analog signals (e.g. tape). (Not used)
I AUX2 right input for external analog signals (e.g. tape). (Not used)
I AUX1 left input for external analog signals (e.g. FM).
I AUX1 right input for external analog signals (e.g. FM).
– Not connected.
O Deemphasis network left. (Not used)
O Deemphasis network right. (Not used)
– Not connected.
O Output to left external filter.
I/O Filter OP-AMP inverting input, left.
I/O Input for FOUTL or filter OP-AMP output (line out).
– Not connected.
O Output to right external filter.
I/O Filter OP-AMP inverting input, right.
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Description