Sony STR-KM2 Service Manual page 46

STR-KM2/KM3
Ver. 1.2
IC2123 WM8768GEDS/R (DIGITAL AUDIO BOARD (4/4))
MODE 1
MCLK 2
BCLK 3
LRCLK 4
DVDD 5 AUDIO
INTERFACE,
DGND 6
DIGITAL
FILTERS
DIN1 7
DIN2 8
DIN3 9
DNC 10
ML/I2S 11
MC/IWL 12
MD/DM 13
MUTE 14
CONTROL
INTERFACE
IC2303 TC7WHU04FK (DIGITAL AUDIO BOARD (3/4))
IC3527 TC7WHU04FK (HDMI RE BOARD (2/2)) (KM3)
VCC 1Y 3A 2Y
8 7 6 5
1 2 3 4
1A 3Y 2A GND
IC2421, IC2812 TK11150CSCL-G (DIGITAL AUDIO BOARD (4/4))
IC3533 MM1839A50NRE (HDMI RE BOARD (2/2)) (KM3)
5
OVER HEAT &
OVER CURRENT
PROTECTION
CONTROL
–
CIRCUIT
+
BANDGAP
REFERENCE
1 2
IC2805 TC74VHC08FT (EKJ) (DIGITAL AUDIO BOARD (3/4))
A0 VCC
1 14
B0 A3
2 13
Y0 3 12
B3
A1 4 11 Y3
B1 A2
5 10
Y1 B2
6 9
GND 7 8 Y2
46
28 AVDD
27 AGND
LOW
STEREO 26 VOUT3R
PASS
DAC
25 VOUT3L
FILTER
LOW
24 VOUT2R
STEREO
PASS
DAC
23 VOUT2L
FILTER
LOW
STEREO 22 VOUT1R
PASS
DAC
21 VOUT1L
FILTER
20 NC
19 NC
18 VMID
17 VREFP
16 VREFN
15 TESTREF
4
3