HT-CT180 - Sony Audio Service Manual (repair manual). Page 28

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HT-CT180
HT-CT180
28
28
•  IC Block Diagrams
– MAIN Board –
U2, 3  EUP3482ADIR1
U4  AS1117
U531  TOP256EN
U21, 22  74LVC1G3157GV
U11  AK5358A
U5  M12L64164A-7T
L(U)DQM
DQ
 Mode 
 Register
Control Logic 
 Column
 Address
 Buffer 
      & 
 Refresh
 Counter
Row 
Address
Buffer 
    & 
Refresh
Counter
Bank D
Row Decode
r
Bank A
Bank B
Bank C
Sense Amplifier
Column Decoder 
Data Control Circuit
Latch Circuit
Input & Out
put 
Buf
fer 
Address
 Clock 
 Generator
CLK
CKE
Command Deco
der
CS
RAS
CAS
WE
B0
B1
6
4
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