Read Panasonic KX-TDA620BX (serv.man8) Service Manual Supplement online
42
KX-TDA620 Series
12.3. BUS-S Board No.2
3
KX-TDA620 Series BUS-S BOARD SCHEMATIC DIAGRAM No.2
65.536MHz
3.3V
0V
3.3V
0V
D
F
E
C
B
A
H
G
4
7
6
5
3
2
8
11
10
9
D[12]
D[25]
A[8]
D[27]
A[15]
A[3]
D[3]
D[24]
D[29]
A[9]
A[20]
A[2]
D[2]
D[23]
A[10]
A[1]
A[19]
D[1]
D[22]
A[0]
A[18]
D[11]
D[0]
A[21]
nIRQ_ASIC
D[10]
D[28]
A[24]
D[9]
D[26]
D[8]
A[23]
A[13]
D[21]
D[0-31]
D[7]
A[22]
A[12]
D[20]
D[20]
D[6]
A[25]
A[11]
D[17]
D[19]
D[5]
A[6]
A[14]
A[0-25]
D[30]
D[18]
D[4]
A[5]
A[17]
D[13]
D[16]
D[14]
A[7]
D[15]
A[16]
A[4]
D[31]
nDC_ALM
nRDY
TXD2
nCTS2
nRTS2
nSLF_PRS
nLOS
ESLFID[1]
CPU_RXD2
D[31]
A[12]
A[1]
A[13]
A[18]
A[15]
A[11]
A[6]
A[2]
A[4]
A[7]
A[14]
A[5]
A[10]
A[16]
A[8]
A[20]
A[3]
A[0]
A[17]
A[19]
A[9]
D[0-31]
RXD2
DG
A[21]
A[22]
A[23]
D[16]
D[30]
D[17]
D[25]
D[24]
D[23]
D[22]
D[5]
D[10]
D[4]
D[11]
D[1]
D[14]
D[15]
D[0]
D[3]
D[12]
D[2]
D[13]
D[7]
D[8]
D[9]
D[6]
D[18]
D[29]
D[21]
D[26]
D[20]
D[27]
D[19]
D[28]
nIRQ_CCLINK
R265
10k
J214
0
R241
10k
+3.3V
RA227
68
1
2
3
4
5
6
7
8
RD/nWR
3:1F;3:6D;7:10G
R235
68
R267
4.7k
+3.3V
C264
0.01u
C257
1u
R226
68
nRD/nCAS
1:4C;3:1F;3:6C;7:12G
R259
0
C201
1u
RA225
68
1
2
3
4
5
6
7
8
J215
NC
R274
22
RA230
68
1
2
3
4
5
6
7
8
R205
68
nRAS
3:1F;7:12H
R266
NC
R247
0
R227
68
R254
NC
R218
68
+3.3V
RA236
68
1
2
3
4
5
6
7
8
nWE0/DQM0
3:1G;3:6D;7:10G
RA231
68
1
2
3
4
5
6
7
8
+3.3V
R222
68
R251
10k
R261
68
R252
22
R258
0
R275
22
nWE1/DQM1
3:1F;3:6D;7:12G
+3.3V
DG
R237
68
R230
68
R217
68
R256
1k
DG
RA214
10k
1
2
3
4
5
6
7
8
6
7
8
FIL202
1
2
3
RA233
68
1
2
3
4
5
6
7
8
nWE2/DQM2
3:3G;3:6D;7:10G
CKIO_SDRAM2
3:3G
RA228
68
1
2
3
4
5
6
7
8
C263
0.01u
R257
10k
+3.3V
R260
68
+3.3V
+3.3V
nWE3/DQM3
3:3F;3:6D;7:12G
R273
0
R201
10
R250
22
R264
10k
RA234
68
1
2
3
4
5
6
7
8
DG
R202
68
+3.3V
R245
10k
R238
68
J210
NC
nCS_CCLINK
3:1C;4:11E;4:1B;7:12D
R240
68
R215
68
DG
C222
0.01u
A[0-25]
1:3A;7:8C;3:1A
R223
68
C266
22p
+3.3V
R244
0
RA226
68
1
2
3
4
5
6
7
8
CKE
3:1G
IC202
1
Xin
2
GND
3
S1
4
S0
5
SSCLK
6
FASEL
7
VDD
8
XOUT
+3.3V
R253
1k
R229
68
R239
68
CN201
NC
11
22
33
44
55
66
77
88
99
10
10
11
11
12
12
13
13
14
14
+3.3V
+3.3V
J216
0
RA213
10k
1
2
3
4
2
3
4
5
6
7
8
nIRQ_ASIC
1:4C
R228
10k
IC200
197
TMS
198
TCK
3
nCS0
199
TDI
4
nCS1
5
nCS4
6
nCS5
7
nCS6
8
nBS
59
nWE4/nCAS4/DQM4
58
nWE5/nCAS5/DQM5
34
D0
36
D1
42
D3
49
D9
37
D13
38
D2
46
D4
48
D5
50
D6
54
D7
53
D8
47
D10
33
D15
45
D11
41
D12
35
D14
61
nWE0/nCAS0/DQM0
60
nWE1/nCAS1/DQM1
95
RD/nWR
77
CKIO
55
CKE
82
A4
80
A6
94
nRD/nCASS/nFRAME
93
nRAS
67
A14
90
nCS2
89
nCS3
186
A0
189
A1
84
A2
83
A3
63
A16
81
A5
76
A7
75
A8
74
A9
73
A10
72
A11
71
A12
68
A13
150
MD1/TXD2
64
A15
62
A17
96
nWE2/nCAS2/DQM2/nICIORD
97
nWE3/nCAS3/DQM3/nICIOWR
123
D16
121
D17
119
D18
115
D19
104
D22
111
D20
109
D21
102
D23
103
D24
108
D25
110
D26
112
D27
116
D28
120
D29
122
D30
124
D31
98
nWE6/nCAS6/DQM6
171
A18
172
A19
173
A20
174
A21
175
A22
176
A23
149
MD0/SCK
167
MD7/TXD
179
A24
180
A25
101
nWE7/nCAS7/DQM7/nREG
166
MD8/nRTS2
152
nIRL0
153
nIRL1
154
nIRL2
155
nIRL3
2
nRESET
1
nRDY
157
XTAL2
158
EXTAL2
165
TCLK
161
CA
200
nTRST
168
SCK2/nMRESET
156
NMI
51
nBACK/nBSREQ
52
nBREQ/nBSACK
192
MD6/nIOIS16
151
MD2/RXD2
181
MD3/nCE2A
182
MD4/nCE2B
183
MD5/nRAS2
184
DACK0
185
DACK1
86
DRAK0
85
DRAK1
190
STATUS0
191
STATUS1
106
nDREQ0
107
nDREQ1
193
nASEBRK/BRKACK
194
TDO
207
XTAL
208
EXTAL
105
RXD
164
nCTS2
RA224
68
1
2
3
4
5
6
7
8
R249
10k
nBS
1:4D
RA223
10k
1
2
3
4
5
6
7
8
6
7
8
DG
R221
10k
R224
68
DG
RA229
68
1
2
3
4
5
6
7
8
nCS0
3:1D;3:7F;7:10D
R272
22
DG
nIRQ_CCLINK
4:1H
R255
NC
DG
J213
NC
J211
NC
nCS4
1:4C;3:1D;3:7G;7:10D
R216
68
DG
R236
68
R263
NC
RA235
68
1
2
3
4
5
6
7
8
nCS3
7:12D
DG
R262
68
+3.3V
R248
0
+3.3V
RA232
68
1
2
3
4
5
6
7
8
R213
NC
R225
68
DG
R242
10k
nCS5
1:4C;3:1D;4:9D;7:12D
+3.3V
R219
10k
R243
22
D[0-31]
3:1A;7:8A
nCS_CTSW
3:1D;4:11E;5:1B;7:10D
nDC_ALM
1:10H;4C
L230
L229
L224
nRESOUT
1:10B
nBATT
1:9G
nBAT_ALM
7:8G
nAC_ALM
1:10H
nDC_ALM
1:10H;11D
CKIO_NEXUS
1:4D;4:11D
R206
68
nFAN_ALM
1:9G
R208
470
+3.3V
SW201
NC
DG
D201
nBREQ
1:2C
nBACK
1:2C
+3.3V
DG
R204
10
nCS2
3:1F
J217
NC
nBACK_T
7:12G
J220
J219
NC
nBREQout
7:12G
nCS2in
7:10D
R207
10k
+3.3V
R203
68
TP2161
TP2255
TP2270
TP2123
TP2223
TP2171
TP2225
TP2276
TP2207
TP2186
TP2134
TP2083
TP2082
TP2017
TP2080
TP2160
TP2120
TP2256
TP2084
TP2136
TP2158
TP2197
TP2253
TP2278
TP2179
TP2183
TP2011
TP2274
TP2184
TP2130
TP2127
TP2117
TP2174
TP2095
TP2018
TP2185
TP2144
TP2025
TP2246
TP2109
TP2201
TP2254
TP2216
TP2202
TP2008
TP2168
TP2037
TP2046
TP2007
TP2287
TP2295
TP2226
TP2094
TP2039
TP2289
TP2139
TP2002
TP2124
TP2021
TP2146
TP2269
TP2212
TP2099
TP2145
TP2282
TP2221
TP2019
TP2128
TP2009
TP2257
TP2163
TP2151
TP2016
TP2029
TP2190
TP2003
TP2010
TP2087
TP2118
TP2048
TP2271
TP2286
TP
20
56
TP2091
TP2206
TP2067
TP2180
TP2108
TP2273
TP2181
TP2097
TP2294
TP2277
TP2066
TP2199
TP2012
TP2119
TP2219
TP2264
TP2034
TP2284
TP2222
TP2290
TP2106
TP2005
TP2166
TP2092
TP2214
TP2280
TP2154
TP2211
TP2172
TP2142
TP2129
TP2267
TP2194
TP2272
TP2283
TP2069
TP2133
TP2054
TP2187
TP2205
TP2076
TP2049
TP2281
TP2140
TP2030
TP2268
TP2075
TP2096
TP2170
TP2132
TP2285
TP2126
TP2175
TP2137
TP2113
TP2089
TP2217
TP2090
TP2114
TP2111
TP2107
TP2196
TP2100
TP2204
TP2203
TP2138
TP2182
TP2165
TP2143
TP2006
TP2220
TP2200
TP2147
TP2297
TP2266
TP2028
TP2208
TP2291
TP2088
TP2070
TP2085
TP2026
TP2262
TP2159
TP2189
TP2279
TP2121
TP2210
TP2169
TP2086
TP2122
TP2141
TP2004
TP2198
TP2195
TP2036
TP2027
TP2213
TP2296
TP2125
TP2014
TP2071
TP2162
TP2073
TP2112
TP2152
TP2188
TP2116
TP2157
TP2101
TP2263
TP2265
TP2098
TP2135
TP2072
TP2022
TP2001
TP2093
TP2153
TP2224
TP2068
TP2192
TP2191
TP2164
TP2148
TP2167
TP2079
TP2173
TP2077
TP2215
TP2275
TP2293
TP2078
TP2074
TP2218
TP2193
TP2288
TP2110
TP2131
TP2178
TP2081
TP2020
TP2115
CN202
NC
11
22
33
44
55
66
77
5
6
2
C
p
2
2
8
6
2
R
3
3
9
6
2
R
3
3
0
7
2
R
3
3
1
7
2
R
3
3
3
0
2
C
I
1
M/R
2
SUB
3
GND
4
Vout
5
Vcc
+1.5V
J209
NC
nBS_T
7:10H
CLK_16M
1:9D;4:11D
IC201
7C
L
K
4
3C
L
K
1
5C
L
K
3
1
REF
6
VDD
4
GND
2C
L
K
2
8
CLKOUT
TP2013
J218
0
+3.3V
R220
10k
nRDY
4:9D
J208
CKIO_SDRAM1
3:1G
CKIO_T
7:12H
TP2035
nSLFFAN_ALM
1:9H
RA237
4.7K
1
2
4
3
2
4
3
6
5
7
8
+3.3V
R246
4.7K
TP2058
TP2059
TP2057
TP2060
TP2062
TP2063
TP2064
TP2065
L201
L202
L203
L204
TP2149
TP2150
TP2155
TP2156
+3.3V
C261
2.2u
DG
R214
10k
+3.3V
TP2292
nSLF_PRS
6:2F
ESLFID[0]
4:9C
ESLFID[1]
4:9C
nLOS_BB
1:10F
TP2038
BM_nRESET
4:9D
R212
68
CPU_nRESET
1:2B;1:3F;5D;3:7G
RA204
10k
2
1
3
4
1
3
4
5
6
8
7
RA205
10k
1
2
3
4
2
3
4
5
6
7
8
RA206
10k
3
4
1
2
4
1
2
7
8
5
6
+3.3V
DG
R210
NC
CPU_RXD2
4:8C
RXD2
4:9C
nRXD2EN
4:9D
nPWRST
1:4D;3:7G;4:11D
DG
IC210
14
7
+3.3V
C258
0.01u
IC210
34
IC210
12
nBSRSTOUT
1:8A;4:1G;4:8E;5:1D
J201
J202
CPU_nRESET
1:2B;1:3F;7H;3:7G
J203
NC
J204
NC
J205
NC
IC211
1
2
4
C262
0.1u
DG
+3.3V
IC211
5
3
nLOS
6:11H
TP2015
TP2023
TP2024
TP2033
TP2031
TP2032
TP2041
TP2061
TP2050
TP2053
TP2055
TP2260
TP2177
TP2176
TP2259
TP2258
CPU_STATUS[1]
6:11H
CPU_STATUS[0]
6:11H
DG
C224
0.01u
DG
C223
0.01u
DG
C225
0.01u
DG
C226
0.01u
DG
C227
0.01u
DG
C228
0.01u
DG
C229
0.01u
DG
C230
0.01u
DG
C231
0.01u
DG
C232
0.01u
DG
C233
0.01u
DG
C234
0.01u
DG
C235
0.01u
C236
0.01u
DG
C237
0.01u
DG
C238
0.01u
DG
C202
1u
DG
DG
C239
0.01u
DG
C240
0.01u
IC200
146
D63
142
D62
138
D60
140
D61
134
D59
132
D58
130
D57
128
D56
127
D55
129
D54
131
D53
133
D52
137
D51/P19
141
D49/P17
139
D50/P18
145
D48/P16
11
D47/P15
15
D46/P14
17
D45/P13
19
D44/P12
23
D43/P11
29
D40/P8
25
D42/P10
27
D41/P9
20
D35/P3
30
D39/P7
28
D38/P6
26
D37/P5
24
D36/P4
18
D34/P2
16
D33/P1
12
D32/P0
196
VSS8
201
VDD-PLL2
202
VSS-PLL2
203
VDD-PLL1
204
VSS-PLL1
205
VDD-CPG
206
VSS-CPG
9
VDDQ1
10
VSSQ1
21
VDDQ2
22
VSSQ2
13
VDD1
14
VSS1
31
VDDQ3
32
VSSQ3
43
VDDQ4
44
VSSQ4
39
VDD2
40
VSS2
56
VDDQ5
57
VSSQ5
69
VDDQ6
70
VSSQ6
78
VDDQ7
79
VSSQ7
65
VDD3
66
VSS3
87
VDDQ8
88
VSSQ8
91
VDD4
92
VSS4
99
VDDQ9
100
VSSQ9
117
VDD5
118
VSS5
113
VDDQ10
114
VSSQ10
125
VDDQ11
126
VSSQ11
135
VDDQ12
136
VSSQ12
143
VDD6
144
VSS6
147
VDDQ13
148
VSSQ13
163
VDDQ16
178
VSSQ14
169
VDD7
162
VSS9
177
VDDQ14
188
VSSQ15
187
VDDQ15
160
VDD-RTC
159
VSS-RTC
195
VDD8
170
VSS7
DG
C248
0.01u
DG
C247
0.01u
C245
0.01u
DG
C246
0.01u
DG
C244
0.01u
DG
DG
C243
0.01u
DG
C242
0.01u
DG
C241
0.01u
DG
TP2051
TP2052
TP2040
TP2047
+3.3V
R211
10k
NC
J207
0
FIL201
1
2
3
J212
NC
IC210
11
10
TP2298
+3.3V
RA207
10k
1
2
3
4
5
6
7
8
RA212
10k
1
2
3
4
5
6
7
8
+3.3V
RA211
10k
1
2
3
4
5
6
7
8
RA210
10k
1
2
3
4
5
6
7
8
RA209
10k
1
2
3
4
5
6
7
8
RA208
10k
3
2
1
4
5
8
7
6
RA201
10k
1
2
3
45
6
7
8
RA202
10k
1
2
3
4
5
6
7
8
RA203
10k
1
2
3
4
5
6
7
8
RA216
10k
1
2
3
4
5
6
7
8
+3.3V
RA217
10k
1
2
3
4
5
6
7
8
RA215
10k
1
2
3
4
5
6
7
8
RA218
10k
1
2
3
4
5
6
7
8
+3.3V
RA219
10k
1
2
3
4
5
6
7
8
RA221
10k
1
2
3
4
5
6
7
8
RA220
10k
1
2
3
4
5
6
7
8
RA222
10k
1
2
3
4
5
6
7
8
LA
20
1
22
0
1
2
3
4
5
6
7
8
LA
20
2
22
0
1
2
3
4
5
6
7
8
LA
20
3
22
0
3
2
1
4
5
8
7
6
LA
20
4
22
0
4
3
2
1
8
7
6
5
LA
20
5
22
0
4
3
2
1
8
7
6
5
LA
20
6
22
0
4
3
2
1
8
7
6
5
RA238
68
4
3
2
1
8
7
6
5
TP2102
TP2103
TP2104
TP2105
CN103_RING_SYNC
1:11G
TP2299
TP2300
C259
0.01u
TCLK
X201
1
2
3
4
4
TP2261
H-UDI
RESET SWITCH
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