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Cirrus Logic Manuals
Motherboard
CS492 Series
Manual
Figure 21. Cdb49300-Mem Schematic - Cirrus Logic CS492 Series Manual
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U2
EMAD[7:0]
EMAD0
A0
2
19
EMAD1
D0
Q0
A1
3
18
D1
Q1
A2
EMAD2
4
17
D2
Q2
EMAD3
A3
5
16
D3
Q3
A4
EMAD4
6
15
D4
Q4
EMAD5
A5
7
14
EMAD6
D5
Q5
A6
8
13
D6
Q6
EMAD7
A7
9
12
D7
Q7
+3.3V
11
#EMOE
CK
20
VCC
1
10
OE
GND
C1
74LVC574
0.1uF
+3.3V
C6
47uF
C7
0.1uF
P1
1
2
#RESET
3
4
R3
49.9
5
6
uC17
7
8
R5
49.9
9
10
uC15
11
12
R7
49.9
EMAD6
13
14
#EXTMEM
EMAD4
15
16
R9
49.9
EMAD2
17
18
#EMOE
EMAD0
19
20
EMAD[7:0]
EMAD[7:0]
R10
49.9
EMAD7
R11
49.9
EMAD6
R12
49.9
EMAD5
R13
49.9
EMAD4
R14
49.9
EMAD3
R15
49.9
EMAD2
R17
49.9
EMAD1
49.9
R18
EMAD0
+3.3V
U3
A0
A8
A8
2
19
A1
D0
Q0
A9
A9
3
18
D1
Q1
A10
A2
A10
4
17
D2
Q2
A3
A11
A11
5
16
D3
Q3
A12
A4
A12
6
15
D4
Q4
A5
A13
A13
7
14
A6
D5
Q5
A14
A14
8
13
D6
Q6
A7
A15
A15
9
12
D7
Q7
11
#EMOE
#EMOE
CK
20
+3.3V
VCC
1
10
OE
GND
74LVC574
C2
0.1uF
uC18
#ABOOT
R4
49.9
uC18
R6
49.9
uC16
EMAD7
R8
49.9
EMAD5
#EMWR
EMAD3
EMAD1
U7
D7
18
2
Y1
A1
D6
17
3
Y2
A2
D5
16
4
Y3
A3
D4
15
5
Y4
A4
D3
14
6
Y5
A5
D2
13
7
Y6
A6
D1
12
8
Y7
A7
D0
11
9
Y8
A8
20
19
VCC
1G
10
1
GND
DIR
74VHC245
R19
0
C9
0.1uF
Figure 21. CDB49300-MEM Schematic
U4
A16
2
19
D0
Q0
3
18
D1
Q1
4
17
D2
Q2
5
16
D3
Q3
6
15
D4
Q4
7
14
D5
Q5
8
13
D6
Q6
9
12
D7
Q7
11
CK
20
+3.3V
VCC
1
10
OE
GND
74LVC574
C3
0.1uF
A[16:0]
U6A
2
3
#ABOOT
74LVC125
+3.3V
U6D
12
11
#uC18
74LVC125
R16
10K
D[7:0]
+3.3V
#EXTMEM
C8
U6E
#EMWR
0.1uF
74LVC125
U1
D[7:0]
D0
30
13
uC17
A17
O0
D1
2
14
uC16
A16
O1
D2
3
15
uC15
A15
O2
A14
D3
29
17
A13
A14
O3
D4
28
18
A13
O4
A12
D5
4
19
A12
O5
A11
D6
25
20
A11
O6
A10
D7
23
21
A10
O7
A9
26
A8
A09
uC18
27
22
A08
CE
A7
5
24
#EXTMEM
A7
OE
A6
6
31
A6
PGM
#EMWR
A5
7
A5
A4
8
1
A4
VPP
A3
9
R1
10K
A3
A2
10
32
A2
VCC
A1
11
A1
A0
12
16
A0
GND
AT27LV020A
+3.3V
+3.3V
C5
0.1uF
R2
10K
U5
8
6
#EXTMEM
VCC
CE2
A16
10
32
A16
OE
A15
7
30
#uC18
A15
CE1
A14
11
A14
A13
4
5
#EMWR
A13
WE
A12
12
A12
A11
1
A11
A10
D0
31
29
A10
D7
A9
D1
2
28
A9
D6
A8
D2
3
27
A8
D5
A7
D3
13
26
A7
D4
A6
D4
14
25
A6
D3
A5
D5
15
23
A5
D2
A4
D6
16
22
A4
D1
D[7:0]
A3
D7
17
21
A3
D0
A2
18
A2
A1
19
9
A0
A1
NC
20
24
A0
GND
CY7C109V33
+3.3V
C4
0.1uF
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This manual is also suitable for:
Cs493 series
Cs49300
Cs4923
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