Sony MZ-R55 Service Manual page 30

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IC Block Diagrams
IC301 AK4517-VQ-L
MCLK
1
LRCK
2
BCLK
3
SDTO
4
SDTI
5
DIFO
6
DIFI 7
8
TST3
DCODE0
9
DCODE1
10
DCODE2
11
CS(SCK)
12
IC303 AN7535SA-E1
24
MUTE
VCC
1
IC601 XC6383E401MR
VOUT
1
VDD 2
NC 3
48 47 46 45 44 43 42 41 40 39
CLOCK
DIVIDER
AUDIO
I/F
CONTROLLER
DPGA DBB
CONTROL
REGISTER
I/F
13 14 15 16 17 18 19 20 21 22 23
23 22 21 20 19
VREF
VCC
DET.
VREF
RIPPLE
2 3 4 5 6
VLX LIMIT
VREF BUFFER
2 STEP PFM CONTROL
OSC 100/180kHz
38 37
HPF
DAC
24
18 17 16 15
VREF
7 8 9 10
LX
5
4 VSS
– 46 –
IPGAL
36
ADCL
35
34 VCMC
ADO
33 VCMR
32 ADCR
IPGAR
31
VRAD
30
LOUT2
29
28 ROUT2
VRDA
27
OPGAL
26
LOUT1
25
14 13
11 12
IC302 TLV23621PW
1
V OUT
8 VDD
IN–1 2
IN+1 3
OUT2
7
VSS 4
IN–2
6
5
IN+2