Sharp CD-MD3000H Service Manual page 108

CD-MD3000H/CD-MD3000W
IC1701 VHiUDA1345/-1: AD/DA Converter (UDA1345)
Terminal Name
Pin No.
1 V
SSA(ADC)
2 V
DDA(ADC)
3 VINL
4 Vref(A)
5 VINR
6 V
ADCN
7 V
ADCP
8* MC1
9* MP1
10 V
DDD
11 V
SSD
12 SYSCLK
13 MP2
14 MP3
15 MP4
16 BCK
17 WS
18 DATAO
19 DATAI
20* MP5
21* MC2
22 AV
SS(DAC)
23 AV
DD(DAC)
24 VOUTR
25 V
DDO
26 VOUTL
27 V
SSO
28 Vref(D)Input
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
VINL
V DDD
V SSD
DATAO
BCK
WS
DATAI
MP1
VOUTL
AD converter analog ground
AD converter analog power
AD converter input (left)
AD converter reference voltage
AD converter input (right)
AD converter reference voltage N
AD converter reference voltage P
Mode control 1 (Pulled-down)
Multi-purpose pin 1
Digital power
Digital ground
System clock 256fs, 384fs, 512fs
Multi-purpose pin 2
Multi-purpose pin 3
Multi-purpose pin 4
Bit clock input
Word select input
Data output
Data input
Multi-purpose pin 5 (Pulled-down)
Mode control 2 (Pulled-down)
DA converter analog ground
DA converter analog power
DA converter output (right)
Opeamp power
DA converter output (left)
Opeamp ground
AD converter reference voltage
V DDA(ADC) V SSA(ADC) V ADCP V ADCN
1
2
0dB/6dB
3
switch
UDA1345
10
DECMATION FILTER
11
DC-CANCELLATION FILTER
18
16
INTERFACE
17
19
9
DSP FEATURES
INTERPOLATION FILTER
NOISE SHAPER
26
25 27
V DDO
V SSO
Figure 108 BLOCK DIAGRAM OF IC
Function
V ref(A)
7 6
ADC
ADC
DIGITAL L3-BUS
INTERFACE
DAC DAC
23 22
V DDA(DAC) V SSA(DAC)
Vref(D)
– 108 –
4
5
VINR
8 MC1
21
MC2
20 MP5
13
MP2
14
MP3
15
MP4
12
SYSCLK
VOUTR
24
28