Panasonic KX-NS520UC Service Manual ▷ View online
57
KX-NS520UC
KX-NS520
8& MOTHER BOARD No.72/3
C
E
B
A
D
F
6
5
8
7
9
G
H
nSLIC_INT[4]
nSLIC_INT[5]
nSLIC_INT[6]
nSLIC_INT[7]
nSLIC_INT[0]
nSLIC_INT[1]
nSLIC_INT[2]
nSLIC_INT[3]
nSLIC_CS[0]
nSLIC_CS[1]
nSLIC_CS[2]
nSLIC_CS[3]
nSLIC_CS[4]
nSLIC_CS[5]
nSLIC_CS[6]
nSLIC_CS[7]
L_D[0]
L_D[1]
L_A[0]
L_A[1]
L_A[2]
L_A[3]
L_A[4]
L_A[5]
L_A[6]
LDHW[0]
HW_FH[0]
HW_CLK[0]
L_D[0]
L_D[1]
L_D[2]
L_D[3]
L_D[4]
L_D[5]
L_D[6]
L_D[7]
L_A[0]
L_A[1]
L_A[2]
L_A[3]
L_A[4]
L_A[5]
L_A[6]
L_A[7]
L_A[8]
L_A[9]
L_A[20]
L_A[21]
L_A[22]
L_A[21]
L_A[22]
CO_ID[0]
CO_ID[1]
CO_ID[2]
CO_ID[3]
CO_EID[0]
BELL[0]
BELL[1]
BELL[2]
BELL[3]
BELL[4]
BELL[5]
REVDET[0]
REVDET[1]
REVDET[2]
REVDET[3]
REVDET[4]
REVDET[5]
LDHW[1]
HW_FH[1]
HW_CLK[1]
nPLD_INT[1]
EXT_ID[0]
EXT_ID[1]
EXT_ID[2]
EXT_ID[3]
EXT_ID[0]
EXT_ID[1]
EXT_ID[2]
EXT_ID[3]
EXT_ID[1]
EXT_ID[2]
EXT_ID[3]
EXT_ID[0]
EXT_ID[1]
EXT_ID[2]
EXT_ID[3]
EXT_ID[1]
EXT_ID[2]
EXT_ID[3]
nINT_EXT_OP[0]
L_D[0-7]
HW_FH1_IN
DHW1_IN
nEXT_PLD_WAIT
INT0
RLY_RESET
CO_ID[3]
CO_ID[2]
CO_ID[1]
CO_ID[0]
CO_ID[2]
CO_ID[1]
CO_ID[0]
CO_ID[0]
CO_ID[1]
CO_ID[2]
CO_ID[3]
CO_EID[0]
CO_EID[1]
CO_EID[2]
CO_EID[3]
nACK_DSPG[0]
nACK DSPG[1]
nACK_DSPG[2]
nHALT
nREAD
HW_CLK[2]
HW_CLK[3]
HW_CLK[4]
HW_CLK[5]
HW_CLK[6]
HW_CLK1_IN
nCS_CO_OP[0]
nCS_EXT_OP[0]
nCS_EXT_OP[1]
nCS_EXT_OP[1]
nRST_BASE
nRST_CO
CO_EID[3]
CO_EID[2]
CO_EID[1]
CO_EID[0]
CO_EID[1]
CO_EID[2]
CO_EID[3]
CO_EID[1]
CO_EID[2]
CO_EID[3]
nCS_BASE
nWRITE
nWRITE
FAN_ALM_PLD
nINT_BASE_CO
nCO_PLD_WAIT
nCO_PLD_WAIT
L_D[2]
L_D[3]
L_D[7]
L_D[6]
L_D[5]
L_D[4]
L_D[6]
L_D[5]
L_D[4]
nRST_EXT_OP[0]
nRST_CO_OP[1]
nRST_CO_OP[0]
IC401
EXT_PLD
29
nINT_CO0
30
nINT_CO1
31
nRST_CO_OP0
32
nRST_CO_OP1
33
GND3
34
POWA[0]
35
POWA[1]
36
POWB[0]
37
POWB[1]
38
PB10C/PCLKT2_1
39
RING_SYNC
40
nRST_EXT
41
SLIC_CLK0
42
SLIC_CS0
43
SLIC_INT0
44
GND4
45
nHALT
46
VCC
47
SLIC_CS1
54
SLIC_UD
55
VCC
56
GND5
57
SLIC_DD
58
CLKOUT
59
FHOUT
60
DATAOUT
61
NC2
62
SLIC_CLK1
63
SLIC_CS4
64
SLIC_INT4
65
SLIC_CS5
66
SLIC_INT5
67
SLIC_CS6
68
SLIC_INT6
69
SLIC_CS7
70
SLIC_INT7
71
nINT_EXT0
72
GND6
79
GND7
80
VCC
81
PROGRAMN
82
JTAGENB
83
CARD_ID0
84
CARD_ID1
85
CARD_ID2
86
CARD_ID3
87
FAN_ALARM
88
nWAIT_IN
89
NC3
90
TMS
91
TCK
92
GND8
93
VCC
94
TDI
95
TDO
96
nREAD
97
nWRITE
4
DATAIN
5
VCC
6
GND1
7
nCSI
8
nINT_BASECO
9
nRST_CO
10
A6
11
VCC
12
A5
13
A4
14
A3
15
A2
16
A1
17
A0
18
D7
19
D6
20
D5
21
D4
22
GND2
26
VCC
27
D1
28
D0
48
SLIC_INT1
49
SLIC_CS2
50
VCC
51
SLIC_INT2
52
SLIC_CS3
53
SLIC_INT3
73
VCC
74
nINT_EXT1
75
nRST_EXT_OP0
76
nRST_EXT_OP1
77
RLY_SET
78
RLY_RESET
98
nWAIT
99
nPLD_INT#0
100
VCC
1
nPLD_INT#1
2
HWCLK
3
FHIN
23
VCC
24
D3
25
D2
IC400
CO_PLD
29
nREAD
30
nWRITE
31
CLKIN
32
FHIN
33
GND3
34
DATAIN
35
CLKOUT
36
FHOUT
37
DATAOUT
38
NRST_DSP
39
REVERSE0
40
BELL0
41
FAN_ALM
42
REVERSE1
43
BELL1
44
GND4
45
SYSCKOUT
46
VCC
47
REVERSE2
54
REVERSE4
55
VCC
56
GND5
57
BELL4
58
CARD_EID3
59
REVERSE5
60
BELL5
61
NC2
62
nCS_EXT_OP0
63
nCS_EXT_OP1
64
CARD_ID0
65
CARD_ID1
66
CARD_ID2
67
CARD_ID3
68
CARD_EID0
69
DATA_DIR_CO
70
DATA_DIR_EXT
71
DSPG_ACK0
72
GND6
79
GND7
80
VCC
81
PROGRAMN
82
JTAGENB
83
nCS_EXT_BASE
84
nWAIT
85
nPLD_INT
86
nCS_DSPG0
87
nCS_DSPG1
88
nCS_DSPG2
89
NC3
90
TMS
91
TCK
92
GND8
93
VCC
94
TDI
95
TDO
96
DSPG_INT1
97
DSPG_INT2
4
A22
5
VCC
6
GND1
7
A9
8
A8
9
A7
10
A6
11
VCC
12
A5
13
A4
14
A3
15
A2
16
A1
17
A0
18
D7
19
D6
20
D5
21
D4
22
GND2
26
VCC
27
D1
28
D0
48
BELL2
49
CARD_EID1
50
VCC
51
REVERSE3
52
BELL3
53
CARD_EID2
73
VCC
74
DSPG_ACK1
75
DSPG_ACK2
76
DSPG_INT0
77
nCS_CO_BASE
78
nCSI
98
nCS_CO_OP0
99
nCS_CO_OP1
100
VCC
1
nCS_BASE
2
A20
3
A21
23
VCC
24
D3
25
D2
nSLIC_CS[0-7]
nSLIC_INT[0-7]
R541
4.7k
+3.3V
DG
R479 33
+3.3V
DG
R494 33
R499 33
R504 33
R521 33
R515 33
R514 33
R513 33
R512 33
R477 33
R472 33
+3.3V
R478 33
+3.3V
DG
R471
4.7k
R523
10k
R522
10k
+3.3V
R516 33
R492 33
SLIC_CLK[1]
LDHW[0]
HW_FH[0]
HW_CLK[0]
HW_FH[0]
HW_CLK[0]
SLIC_DOUT
R520 33
SLIC_DIN
SLIC_CLK[0]
R495 33
R488 33
R486 33
R484 33
R493 33
+3.3V
R490 33
+3.3V
R470
4.7k
R475 33
R476 33
R476 33
R474
4.7k
R501 33
R508 33
R509 33
R509 33
R503 33
R539
10k
NC
1
2
3
4
5
6
7
8
6
7
8
+3.3V
R524
0
NC
0
0
0
R525
R526
R527
R526
R527
DG
+3.3V
R489 33
DG
R500 33
R505
2.2k
DG
+3.3V
+3.3V
DG
R498
2.2k
R533
10k
NC
1
2
3
4
2
3
4
5
6
7
8
R469
10k
1
2
3
45
6
7
8
R480
33
1
2
3
4
5
6
7
8
R538
2.2k
DG
+3.3V
DG
R529 NC
R532 NC
R531 NC
R530 NC
R537
R535
R536
DG
R534
nACK_DSPG[0-2]
R506 33
R507 33
R507 33
R497 33
R487 33
R577 0
R578 0
C405 0.1u 10
C406 0.1u 10
C407 0.1u 10
C408 0.1u 10
C409 0.1u 10
C410 0.1u 10
C411 0.1u 10
C412 0.1u 10
C413 0.1u 10
C414 0.1u 10
C406 0.1u 10
C407 0.1u 10
C408 0.1u 10
C409 0.1u 10
C410 0.1u 10
C411 0.1u 10
C412 0.1u 10
C413 0.1u 10
C414 0.1u 10
C404 0.1u 10
DG
C420 0.1u 10
C417 0.1u 10
C424 0.1u 10
C415 0.1u 10
C425 0.1u 10
C423 0.1u 10
C418 0.1u 10
C419 0.1u 10
C419 0.1u 10
C422 0.1u 10
C421 0.1u 10
DG
C416 0.1u 10
DG
C426 NC
C427 NC
C428 NC
C429 NC
C430 NC
R586
2.2k
DG
R591 10k
NC
R592 10k
NC
R593 10k
NC
R594 10k
NC
+3.3V
R590 10k
NC
+3.3V
+3.3V
R596 10k
NC
R595 10k
NC
CN403
1
GND
2 TDO
3 TDI
4 TMS
5 TCK
6 +3.3V
3 TDI
4 TMS
5 TCK
6 +3.3V
DG
+3.3V
CN404
1
GND
2
TDO
3
TDI
4
TMS
5
TCK
6
+3.3V
+3.3V
DG
R540
2.2k
nRST_BASE
nRST_BASE
TP400
+3.3V
R597
4.7k
R510 10k
NC
R502 10k
NC
R496 10k
NC
R511 10k
NC
TP401
DG
TP402
C402
0.22u
10
C434
0.1u
10
C451 0.1u 10
C452 0.1u 10
C453 0.1u 10
C454 0.1u 10
C452 0.1u 10
C453 0.1u 10
C454 0.1u 10
L501
L502
L503
L502
L503
for Debug
NS500/520:0x0001
NS300/320:0x0010
NS700/720:0x0011
NS300/320:0x0010
NS700/720:0x0011
1
2
3
(1)
(2)
(3)
(2)
(3)
(56)
(57)
(58)
(57)
(58)
(4)
(5)
(5)
(6)
(17)
(18)
(19)
(20)
(21)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(23)
(24)
(26)
(25)
(27)
(28)
(29)
(30)
(31)
(32)
(28)
(29)
(30)
(31)
(32)
(34)
(33)
(35)
(36)
(37)
(36)
(37)
(38)
(39)
(39)
(40)
(41)
(42)
(43)
(41)
(42)
(43)
(44)
(45)
(46)
(47)
(48)
(49)
(45)
(46)
(47)
(48)
(49)
(50)
(51)
(52)
(53)
(54)
(51)
(52)
(53)
(54)
(55)
(7)
(8)
(9)
(8)
(9)
(10)
(11)
(12)
(13)
(11)
(12)
(13)
(59)
(60)
(61)
(60)
(61)
(62)
(63)
(64)
(65)
(66)
(67)
(68)
(64)
(65)
(66)
(67)
(68)
(14)
(15)
(16)
(15)
(16)
(72)
(73)
(73)
(74)
(75)
(75)
(69)
(70)
(71)
(70)
(71)
R485 33
L403
L402
L401
58
KX-NS520UC
KX-NS520
8& MOTHER BOARD No.7 3/3
C
E
B
A
D
F
8
11
10
9
G
H
12
L_A[0]
L_A[1]
L_A[2]
L_A[3]
L_A[4]
L_A[5]
L_A[6]
L_A[7]
L_A[8]
L_A[9]
L_A[10]
L_A[11]
L_A[20]
L_A[21]
L_A[22]
L_D[0]
L_D[1]
L_D[2]
L_D[3]
L_D[4]
L_D[5]
L_D[6]
L_D[7]
nPLD_INT[1]
DHW0_IN
HW_FH0_IN
HW_CLK[2]
HW_CLK[3]
HW_CLK[4]
HW_CLK[5]
HW_CLK[6]
nHW_FH[2]
nHW_FH[3]
nHW_FH[4]
nHW_FH[5]
nHW_FH[6]
LDHW[2]
LDHW[3]
LDHW[3]
LDHW[4]
LUHW[2]
LUHW[3]
LUHW[3]
LUHW[4]
PT_TXA[0]
PT_TXA[1]
PT_TXA[1]
PT_RXA[0]
PT_RXA[1]
PT_RXA[1]
PT_RXB[0]
PT_RXB[1]
PT_TXB[0]
PT_TXB[1]
PT_RXB[1]
PT_TXB[0]
PT_TXB[1]
NETREF
DHW1_IN
DHW1_IN
DC_ALM
L_A[0]
L_A[2]
L_A[4]
L_A[6]
L_A[2]
L_A[4]
L_A[6]
L_A[1]
L_A[3]
L_A[5]
L_A[7]
L_A[3]
L_A[5]
L_A[7]
L_A[8]
L_A[10]
L_A[20]
L_A[22]
L_A[10]
L_A[20]
L_A[22]
L_A[9]
L_A[11]
L_A[21]
L_A[11]
L_A[21]
L_D[6]
L_D[4]
L_D[2]
L_D[0]
L_D[4]
L_D[2]
L_D[0]
L_D[7]
L_D[5]
L_D[3]
L_D[1]
L_D[5]
L_D[3]
L_D[1]
HW_CLK1_IN
nCS_BASE
nWRITE
R560 10
R558 10
R557 10
R569 10
R570 10
R571 10
R572 10
R551 10
R552 10
R553 10
R554 10
DG
R555 10
R568 10
PT_TXA[0-1]
PT_RXA[0-1]
PT_RXB[0-1]
PT_RXB[0-1]
PT_TXB[0-1]
LUHW[0]
LUHW[1]
LUHW[1]
B400
NC
CR-2354/GUFK
1
2
3
DG
+15V
R567
10
1
2
3
4
2
3
4
6
7
8
R566
10
1
2
3
4
2
3
4
6
7
8
R565
10
1
2
3
4
2
3
4
6
5
5
5
5
5
5
7
8
R564
10
1
2
3
4
2
3
4
6
7
8
R563
10
1
2
3
4
2
3
4
6
7
8
R562
10
1
2
3
4
2
3
4
6
7
8
R561
10
1
2
3
4
2
3
4
6
5
5
5
5
5
7
8
R547
10
1
2
3
4
2
3
4
6
5
5
7
8
R548
10
1
2
3
4
2
3
4
6
5
5
5
5
5
5
5
5
5
5
7
8
R549
10
1
2
3
4
2
3
4
6
7
8
R550
10
1
2
3
4
2
3
4
6
7
8
R556
10
1
2
3
4
2
3
4
6
7
8
R559
10
1
2
3
4
2
3
4
6
7
8
AC_ALM
DC_ALM
+3.3V
+3.3V
R573
10k
1
2
3
4
2
3
4
6
7
8
R574
10k
1
2
3
4
2
3
4
6
7
8
R543
10k
1
2
3
4
2
3
4
6
7
8
R544
10k
1
2
3
4
2
3
4
6
7
8
R545
10k
1
2
3
4
2
3
4
6
7
8
R546
10k
1
2
3
4
2
3
4
6
7
8
BAT
R542 10k
+3.3V
+3.3V
R575 10k
R576 10k
L_D[0-7]
L_A[0-22]
CN402
+15V
41
CN402
DG
3
CN402
nHW_FH6
57
CN402
LUHW4
13
CN402
DG
62
CN402
LUHW3
12
CN402
DATA[3]
30
CN402
HW_CLK6
20
CN402
DATA[1]
29
CN402
NETREF
61
CN402
LUHW2
11
CN402
DG
22
CN402
DATA[2]
69
CN402
nHW_FH2
55
CN402
nRD
24
CN402
PT_TXB0
6
CN402
nHW_FH3
15
CN402
DATA[4]
70
CN402
A[0]
72
CN402
DG
48
CN402
HW_CLK5
60
CN402
+3.3VB
21
CN402
nHW_FH1
14
CN402
DG
67
CN402
A[9]
37
CN402
nWR
64
CN402
LUHW1
10
CN402
LDHW4
53
CN402
N.C.
42
CN402
N.C.
2
CN402
nWAIT
28
CN402
LUHW0
9
CN402
A[4]
74
CN402
PT_TXA1
47
CN402
DG
80
CN402
LDHW0
49
CN402
HW_CLK1
58
CN402
HW_CLK2
18
CN402
nRESET
25
CN402
PT_RXB0
4
CN402
DATA[6]
71
CN402
DG
8
CN402
A[11]
38
CN402
A[7]
36
CN402
A[10]
77
CN402
PT_TXA0
46
CN402
DATA[7]
32
CN402
A[1]
33
CN402
PT_RXA1
45
CN402
DATA[0]
68
CN402
DG
27
CN402
A[20]
78
CN402
A[21]
39
CN402
DATA[5]
31
CN402
PT_RXA0
44
CN402
DG
40
CN402
+15V
1
CN402
HW_CLK3
59
CN402
HW_CLK0
17
CN402
HW_CLK4
19
CN402
nHW_FH4
56
CN402
LDHW1
50
CN402
nDC_ALM
63
CN402
INT0
26
INT1
66
CN402
LDHW2
51
CN402
nHW_FH0
54
CN402
DG
43
CN402
nAC_ALM
23
CN402
PT_TXB1
7
CN402
PT_RXB1
5
CN402
CN402
nCS
65
CN402
A[5]
35
CN402
LDHW3
52
CN402
nHW_FH5
16
CN402
A[6]
75
CN402
A[2]
73
CN402
A[8]
76
CN402
A[3]
34
CN402
A[22]
79
C431 NC
DG
C432 NC
DG
C433
NC
DG
C435
1u
25
DG
C436
10u
25
R598 1k
1
2
3
(56)
(57)
(58)
(57)
(58)
(59)
(60)
(61)
(60)
(61)
(62)
(63)
(64)
(65)
(66)
(67)
(68)
(64)
(65)
(66)
(67)
(68)
(72)
(73)
(73)
(74)
(75)
(75)
(69)
(70)
(71)
(70)
(71)
59
KX-NS520UC
12.2. Memo
60
KX-NS520UC
12.3. CPU Board
12.3.1.
No.1
C
E
B
A
D
F
3
4
2
DDR_A[12]
DDR_A[11]
DDR_A[9]
DDR_A[10]
DDR_A[10]
DDR_A[6]
DDR_A[7]
DDR_A[8]
DDR_A[7]
DDR_A[8]
DDR_A[5]
DDR_A[2]
DDR_A[3]
DDR_A[4]
DDR_A[3]
DDR_A[4]
DDR_A[1]
DDR_A[0]
DDR_A[0]
DDR_A[1]
DDR_A[2]
DDR_A[3]
DDR_A[4]
DDR_A[5]
DDR_A[1]
DDR_A[2]
DDR_A[3]
DDR_A[4]
DDR_A[5]
DDR_A[11]
DDR_A[6]
DDR_A[10]
DDR_A[7]
DDR_A[9]
DDR_A[8]
DDR_A[12]
DDR_D[0-15]
DDR_A[14]
DDR_A[13]
DDR_A[13]
DDR_A[14]
DDR_A[14]
DDR_D[0]
DDR_D[1]
DDR_D[2]
DDR_D[3]
DDR_D[4]
DDR_D[1]
DDR_D[2]
DDR_D[3]
DDR_D[4]
DDR_D[7]
DDR_D[6]
DDR_D[5]
DDR_D[15]
DDR_D[8]
DDR_D[13]
DDR_D[11]
DDR_D[12]
DDR_D[12]
DDR_D[10]
DDR_D[9]
DDR_D[14]
DDR_A[15]
DDR_A[15]
DDR_A[0-15]
DDR_D[15]
DDR_D[14]
DDR_D[13]
DDR_D[12]
DDR_D[11]
DDR_D[10]
DDR_D[9]
DDR_D[8]
DDR_D[3]
DDR_D[7]
DDR_D[0]
DDR_D[1]
DDR_D[2]
DDR_D[1]
DDR_D[2]
DDR_D[6]
DDR_D[5]
DDR_D[4]
DG
+1.5V_DDR
DG
DG
DDR_VREF
C101
0.1u 16
C108
0.1u
16
R107
51
1
2
3
3
6
7
8
R106
51
2
1
3
4
6
5
5
8
7
C111
0.1u
16
+1.5V_DDR
C112
0.1u
16
C113
0.1u
16
CL101
CL102
CL103
CL104
CL105
CL106
CL107
CL108
CL109
CL110
CL111
CL112
CL113
CL114
CL115
CL116
CL102
CL103
CL104
CL105
CL106
CL107
CL108
CL109
CL110
CL111
CL112
CL113
CL114
CL115
CL116
C107
0.1u
16
C106
0.1u
16
C105
0.1u
16
C104
0.1u
16
C103
0.1u
16
C102
0.1u
16
R108
51
C109
10u
10
C110
10u
10
R102
240
1
R101
49.9
1
R104
49.9
1
R103
49.9
1
C115
0.1u
16
C114
0.1u
16
IC151
A0
N3
A1
P7
A2
P3
A3
N2
A4
P8
A5
P2
A6
R8
A7
R2
A8
T8
A9
R3
A10/AP
L7
A11
R7
A12/*BC
N7
NC3
L1
NC1
J1
NC2
J9
BA0
M2
BA1
N8
BA2
M3
*CS
L2
*RAS
J3
*CAS
K3
*WE
L3
*RESET
T2
ZQ
L8
ODT
K1
*CK
K7
CK
J7
CKE
K9
DML
E7
DMU
D3
NC4
L9
DQL0
E3
DQL1
F7
DQL2
F2
DQL3
F8
DQL4
H3
DQL5
H8
DQL6
G2
DQL7
H7
DQU0
D7
DQU1
C3
DQU2
C8
DQU3
C2
DQU4
A7
DQU5
A2
DQU6
B8
DQU7
A3
DQSL
F3
*DQSL
G3
DQSU
C7
*DQSU
B7
VDD1
B2
VDD2
D9
VDD3
G7
VDD4
K2
VDD5
K8
VDD6
N1
VDD7
N9
VDD8
R1
VDD9
R9
VDDQ1
A1
VDDQ2
A8
VDDQ3
C1
VDDQ4
C9
VDDQ5
D2
VDDQ6
E9
VDDQ7
F1
VDDQ8
H2
VDDQ9
H9
VREFCA
M8
VREFDQ
H1
VSS1
A9
VSS2
B3
VSS3
E1
VSS4
G8
VSS5
J2
VSS6
J8
VSS7
M1
VSS8
M9
VSS9
P1
VSS10
P9
VSS11
T1
VSS12
T9
VSSQ1
B1
VSSQ2
B9
VSSQ3
D1
NC6
T3
VSSQ4
D8
VSSQ5
E2
VSSQ6
E8
VSSQ7
F9
VSSQ8
G1
VSSQ9
G9
NC7
T7
NC5
M7
IC101
I-AM3352ZCZ60-1
F3 DDR_A0
H1 DDR_A1
E4 DDR_A2
C3 DDR_A3
C2 DDR_A4
B1 DDR_A5
D5 DDR_A6
E2 DDR_A7
D4 DDR_A8
C1 DDR_A9
F4 DDR_A10
F2 DDR_A11
E3 DDR_A12
H3 DDR_A13
H4 DDR_A14
D3 DDR_A15
C4 DDR_BA0
E1 DDR_BA1
B3 DDR_BA2
M2 DDR_DQM0
J2 DDR_DQM1
G4 *DDR_RAS
F1 *DDR_CAS
B2 *DDR_WE
G2 *DDR_RESET
G1 DDR_ODT
H2 *DDR_CS0
G3 DDR_CKE
D2 DDR_CK
D1 *DDR_CK
J3 DDR_VTP
J4 DDR_VREF
L2
*DDR_DQS1
L1
DDR_DQS1
P2
*DDR_DQS0
P1
DDR_DQS0
M1
DDR_D15
L4
DDR_D14
L3
DDR_D13
K4
DDR_D12
K3
DDR_D11
K2
DDR_D10
K1
DDR_D9
J1
DDR_D8
P4
DDR_D7
P3
DDR_D6
N4
DDR_D5
N3
DDR_D4
N2
DDR_D3
N1
DDR_D2
M4
DDR_D1
M3
DDR_D0
CPU Cortex-A8
DRAM 128MB
303MHz
4
5
KX-NS520
8& CPU BOARD No.1 1/2
1
2
(1)
(2)
DDD3 CLK
DDD3 nCLK
Click on the first or last page to see other KX-NS520UC service manuals if exist.