Toshiba 32DF46 Service Manual page 35

A B
8
7
6
5
4
3
FROM ASIC
GND
+2.6V
2
1
A B
G-17
C D
SDRAM SCHEMATIC DIAGRAM
IC2401 ZR39640BGCG-B1 (4/8 DDR SDRAM)
SDATA0 B1
DDRA2 R2432 22
E2 SADR2 SDATA1 C4
R2433 22
DDRA3
B9 B2
SADR3 SDATA2
NR2410
SDATA3 C3
4D02WGJ0220TCE
DDRA5
E15 SADR5 SDATA4 C5
DDRCKE
D15 SCKE
DDRA7
E16 SADR7 SDATA5 C2
DDRA9
D16 SADR9
SDATA6 A1
NR2406
4D02WGJ0220TCE
SDATA7 C1
DDRA1
A10 SADR1
DDRA4
A9 SADR4
DDRA6
A8 SADR6
DDRA11
A7 SADR11 SDATA8 B7
SDATA9 A3
JG2405 E3 SADR13
SDATA10 A6
SDATA11 B5
NR2407
4D02WGJ0220TCE
SDATA12 A5
DDRA12
C8 SADR12
DDRA8
B8 SADR8 SDATA13 A4
DDRBS0
A11 SBS0
DDRA10
B10 SADR10 SDATA14 B6
SDATA15 C7
DDRDQS0
B3 SDQS0 SDATA16 B12 NC
DDRDQS1
C6 SDQS1 SDATA17 A13 NC
NC A15 SDQS2 SDATA18 C11 NC
NC A16 SDQS3 SDATA19 A12 NC
DDRDM0
A2 SDQM0 SDATA20 A14 NC
DDRDM1
B4 SDQM1 SDATA21 B11 NC
NC C12 SDQM2 SDATA22 B13 NC
NC B14 SDQM3 SDATA23 C10 NC
NR2408
4D02WGJ0220TCE
DDRA0
E1 SADR0
DDRRASN
D2 SRASN SDATA24 C16 NC
DDRWEN
D1 SWEN
DDRBS1
D3 SBS1 SDATA25 A17 NC
SDATA26 C15 NC
NR2411
4D02WGJ0220TCE
SDATA27 B15 NC
NC NC
DDRCK
C17 SCK
DDRCKN SDATA28 C14 NC
D17 SCKN
DDRCASN
E17 SCASN
SDATA29 C13 NC
SDATA30 B17 NC
SDATA31 B16 NC
VREF
C9 SVREF
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C D
E
(DIGITAL PCB)
DDRDQ3
DDRDQ4
DDRDQ1
DDRDQ2
DDRDQ6
256Mbit DDR SDRAM IC
DDRDQ0
IC2404
DDRDQ5 C2462
VDD
DDRDQ7 0.1 B
DQ0
C2463
VDDQ
0.1 B
DQ1
DDRDQ8
DQ2
DDRDQ9
VSSQ
DDRDQ12 DQ3
DQ4
DDRDQ13 C2464
VDDQ
0.1 B
DDRDQ15
DQ5
DDRDQ11 DQ6
VSSQ
DDRDQ14
DQ7
DDRDQ10
NC NC
C2465
VDDQ
0.1 B DDRDQS0 R2457 22
LDQS
NC NC
C2466
VDD
0.1 B
NC NC
DDRDM0 R2456 22
LDM
DDRWEN
WE
DDRCASN
CAS
DDRRASN
RAS
CS
NC NC
DDRBS0
BA0
DDRBS1
BA1
DDRA10
AP/A10
DDRA0
A0
DDRA1
A1
DDRA2
A2
DDRA3
A3
C2467
VDD
0.1 B
C2468
10 C
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
E
F G
HY5DU561622DTP-D43
VSS
DQ15
VSSQ
DQ14
DQ13
C2469
VDDQ
0.1 B
DQ12
DQ11
VSSQ
DQ10
DQ9
C2470
VDDQ
0.1 B
DQ8
NC NC
VSSQ
R2464
DDRDQS1
UDQS
22
NC NC
VREF
VREF
VSS
R2465 22 DDRDM1
UDM
DDRCKN
CK
DDRCK
CK
DDRCKE
CKE
NC NC
DDRA12
A12
DDRA11
A11
DDRA9
A9
DDRA8
A8
DDRA7
A7
DDRA6
A6
DDRA5
A5
DDRA4
A4
VSS
C2473
10 C
F G
H
8
7
6
5
4
3
2
PCBDH0
CEE139
1
H
G-18