Service manual

MD-MX30/MX30W
– 90 –
Figure 90 BLOCK DIAGRAM OF IC
1VSSA(ADC) AD converter analog ground
2VDDA(ADC) AD converter analog power
3 VINL AD converter input (left)
4 Vref(A) AD converter reference voltage
5 VINR AD converter input (right)
6VADCN AD converter reference voltage N
7VADCP AD converter reference voltage P
8* MC1 Mode control 1 (Pulled-down)
9* MP1 Multi-purpose pin 1
10 VDDD Digital power
11 VSSD Digital ground
12 SYSCLK System clock 256fs, 384fs, 512fs
13 MP2 Multi-purpose pin 2
14 MP3 Multi-purpose pin 3
15 MP4 Multi-purpose pin 4
16 BCK Bit clock input
17 WS Word select input
18 DATAO Data output
19 DATAI Data input
20* MP5 Multi-purpose pin 5 (Pulled-down)
21* MC2 Mode control 2 (Pulled-down)
22 AVSS(DAC) DA converter analog ground
23 AVDD(DAC) DA converter analog power
24 VOUTR DA converter output (right)
25 VDDO Opeamp power
26 VOUTL DA converter output (left)
27 VSSO Opeamp ground
28 Vref(D)Input AD converter reference voltage
IC1701 VHiUDA1347T-1: AD/DA Converter (UDA1347T)
Pin No.
Function
Terminal Name
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
V
DDA(ADC)
V
SSA(ADC)
V
ADCP
V
ADCN
V
ref(A)
VINR
TEST1
TEST2
TEST3
MP2
MP3
MP4
SYSCLK
VOUTR
Vref(D)
V
SSA(DAC)
V
DDA(DAC)
V
SSO
V
DDO
VOUTL
OVERFL
DATAI
WS
BCK
DATAO
V
SSD
V
DDD
VINL
ADC
0dB/6dB
switch
ADC
0dB/6dB
switch
DECMATION FILTER
DC-CANCELLATION FILTER
DIGITAL
INTERFACE
L3-BUS
INTERFACE
DSP FEATURES
INTERPOLATION FILTER
NOISE SHAPER
DAC DAC
UDA1344
2
3
4
5
1 7
8
9
6
12
13
14
15
11
17
18
19
10
16
22
23
24
25
21
27
28
20
26