Date: August 12, 1993 Sheet 2 of 3
Size Document Number REV
C 0900-02489-000 A
Title
DK6554X
3050 ZANKER RD., SAN JOSE, CA 95134
CHIPS AND TECHNOLOGIES, INC.
MAD[0..15]
MAD0
MAD1
MAD2
MAD3
MAD4
MAD5
MAD6
MAD7
MAD8
MEMORY INTERFACE
A0
16
A1
17
A2
18
A3
19
A5
23
A6
24
A7
25
A8
26
DQ1 2
DQ2 3
DQ3 4
DQ4 5
DQ5 7
DQ6 8
DQ7 9
DQ8 10
DQ10 32
DQ11 33
DQ14 37
DQ15 38
DQ13 36
A4
22
DQ9 31
DQ12 34
WE(UWE)
13
RAS
14
LCAS(NC)
29 UCAS(CAS)
28
DQ16 39
NC
11
NC(LWE)
12
NC/A9
15
OE 27
GND 35
GND 21
VCC
6
VCC
20
VCC
1
GND 40
NC
30
U3
256KX16 DRAM SOJ
AA0
AA1
AA2
AA3
AA4
AA5
AA6
AA7
AA8
MAD[0..15]
AA[0..8]
MAD0
MAD1
MAD2
MAD3
MAD4
MAD5
MAD6
MAD7
R29
20K
W/R(MEMR)
11
RDYRTN(MEMW)
23
LCLK(IOR)
27
LDEV(IOW)
25
M/IO(AEN)
31
BE3(RFSH)
10
RESET
207
BE1(BHE)
32
LRDY(RDY)
24
D18(IOCS16)
18 D17(MCS16)
19
ADS(ALE)
22
BE0(A0)
43
BE2(A1)
21
A2
179
A3
180
A4
182
A5
183
A6
185
A7
186
A8
187
A10
189
A11
190
A12
191
A13
192
A14
193
A15
194
A16
195
A17(LA17)
196
A18(LA18)
197
A19(LA19)
198
D0
51
D1
50
D2
49
D3
48
D4
47
D5
46
D6
45
D7
44
D8
41
D9
40
D10
38
D11
37
D12
36
D13
35
D14
34
D15
33
XTALI
203
XTALO
204
STNDBY
178
AVCC
59
AGND
56
BVCC
9
BVCC
42
DVCC
66
IVCC
80
XVCC
108
IGND
77
XGND
105
MGND
139
IGND
184
BGND
12
BGND
26
BGND
39
DGND
63
MAD8 170
MAD9 171
MAD10 172
MAD11 173
MAD12 174
MAD13 175
MAD14 176
MAD15 177
AA0 145
AA1 146
AA2 147
AA3 148
AA4 149
AA5 150
AA6 151
AA7 152
AA8 153
RASA 156
CASAH 159
MBD1 128
MBD2 129
MBD3 130
MBD4 131
MBD5 132
MBD6 133
MBD7 134
P0 71
P1 72
P2 73
P3 74
P4 75
P5 76
P6 78
P7 79
LP 68
FLM 67
SHFCLK 70
ENAVDD 62
R60
G58
B57
HSYNC 65
VSYNC 64
A9
188
ENAVEE 61
D16(0WS)
20
MAD0 162
MAD1 163
MAD2 164
MAD3 165
MAD4 166
MAD5 167
MAD6 168
MAD7 169
AA9 154
CASAL 160
WEA 157
MBD0 127
MBD8 135
MBD9 136
MBD10 137
MBD11 138
MBD12 140
MBD13 141
MBD14 143
MBD15 144
RASB 123
CASBH 125
CASBL 126
WEB 124
P8 81
P9 82
P10 83
P11 84
P12 85
P13 86
P14 87
P15 88
ACTI 53
ENABKL 54
M69
A20(LA20)
199
A21(LA21)
200
A22(LA22)
201
A23(LA23)
28
A25(IRQ)
30
MVCC
142
IVCC
181
CVCC
205
CVCC
206
CGND
202
CGND
208
RSET 55
A24(ROMCS)
29
D19(UNDEF)
17
D20(UNDEF)
16
D21(UNDEF)
15
D22(UNDEF)
14
D23(UNDEF)
13
D24(UNDEF)
8
D25(UNDEF)
7
D26(UNDEF)
6
D27(UNDEF)
5
D28(UNDEF)
4
D29(UNDEF)
3
D30(UNDEF)
2
D31(UNDEF)
1
MCD0 106
MCD1 107
MCD2 109
MCD3 110
MCD4 111
MCD5 112
MCD6 113
MCD7 114
MCD8 115
MCD9 116
MCD10 117
MCD11 118
MCD12 119
MCD13 120
MCD14 121
MCD15 122
CA0 90
CA1 91
CA2 92
CA3 93
CA4 94
CA5 95
CA6 96
CA7 97
CA8 98
CA9 99
RASC 101
CASCH 103
CASCL 104
WEC 102
OEC 100
BGND
52
DGND
89
MVCC
158
MGND
161
OEAB 155
P1
6554X HEADER
-BE3
MIO-
-RD
CCLK
-RD
CCLK
-LDEV
MIO-
-BE3
RESET
-RDYRTN
GVCC
-RDYRTN
VPIA[0..23]
-LDEV
VPID[0..31]
RESET
MALE HEADER FOR CONNECTION OF
6554X DAUGHTER CARD(PFP CARRIER).
VPID0
VPID1
VPID2
VPID3
VPID4
VPID[0..31]
VPIA[0..23]
VESA CONNECTOR
BE0
A39
BE1
A41
BE2
A42
BE3
A44
ADR2
B40
ADR3
B39
ADR4
A37
ADR5
B37
ADR6
A36
ADR7
B36
ADR8
A34
ADR9
B35
ADR10
A33
ADR11
B34
ADR12
A32
ADR13
B33
ADR14
A31
ADR15
B31
ADR16
A30
ADR17
B30
ADR18
A29
ADR19
B28
ADR20
A28
ADR21
B27
ADR22
A26
ADR23
B26
ADR24
A25
ADR25
B25
ADR26
A23
ADR27
B24
ADR28
A22
ADR29
B23
ADR30
A21
ADR31
B21
LCLK
B56
RESET
B42
LGNT
A52
ADS
A45
W/-R
B45
D/-C
B43
M/-IO
B44
RDYRTN
B48
BLAST
B52
LKEN
A57
WBACK
A38
ID0
B53
ID1
B54
ID2
A54
ID3
A55
ID4
A56
NC
B41
VCC
A12
VCC
A27
VCC
A40
VCC
A53
VCC
B9
VCC
B20
VCC
B32
VCC
B57
DAT0 B1
DAT1 A1
DAT2 B2
DAT3 A2
DAT4 B3
DAT5 A4
DAT6 B4
DAT7 A5
DAT8 B5
DAT9 A6
DAT10 B7
DAT11 A7
DAT12 B8
DAT13 A8
DAT14 B10
DAT15 A9
DAT16 B11
DAT17 A11
DAT18 B12
DAT19 A13
DAT20 B13
DAT21 A14
DAT22 B15
DAT23 A15
DAT24 B16
DAT25 A16
DAT26 B17
DAT27 A18
DAT28 B18
DAT29 A19
DAT30 B19
DAT31 A20
LREQ A50
LDEV A49
LBS16 B58
LEADS A58
LRDY A48
BRDY B51
IRQ9 B50
GND A3
GND A10
GND A17
GND A24
GND A35
GND A43
GND A51
GND B6
GND B14
GND B22
GND B29
GND B38
GND B49
GND B55
P3
CON VESA58
VPIA2
VPIA3
VPIA4
VPIA0
VPIA1
-BE1
-BE3
VPIA5
VPIA6
VPIA7
VPIA8
VPIA9
VPIA10
VPIA11
VPIA12
VPIA13
VPIA14
VPIA15
VPIA16
VPIA17
VPIA18
VPIA19
VPIA20
VPIA21
VPIA22
VPIA23
VPID8
VPID9
VPID10
VPID11
VPID12
VPID13
VPID14
VPID15
VPID5
VPID6
VPID7
VPID16
VPID17
VPID18
VPID19
VPID20
VPID21
VPID22
VPID23
-LRDY
-ADS
-BE1
VPIA2
VPIA3
VPIA4
VPIA5
VPIA6
VPIA7
-BE1
-ADS
-LRDY
VPIA0
VPIA1
RAA9
MAD8
MAD9
MAD10
MAD11
MAD12
MAD13
MAD14
MAD15
AA0
AA1
AA2
AA3
AA4
AA5
AA6
AA7
AA8
RAA9
AA[0..8]
R15 0
R11 *0
MVCC
AA9 AA9
-RASA
-WEA
-CASAH
-LWEA
AA9
MVCC
-LCASA
AA[0..8]
-OEAB
MAD9
MAD10
MAD11
MAD12
MAD13
MAD14
MAD15
-OEAB
MBD[0..15]
MBD0
MBD1
MBD2
MBD3
MBD4
MBD5
MBD6
MBD7
MBD8
MBD9
MBD10
MBD11
MBD12
MBD13
A0
16
A1
17
A2
18
A3
19
A5
23
A6
24
A7
25
A8
26
DQ1 2
DQ2 3
DQ3 4
DQ4 5
DQ5 7
DQ6 8
DQ7 9
DQ8 10
DQ10 32
DQ11 33
DQ14 37
DQ15 38
DQ13 36
A4
22
DQ9 31
DQ12 34
WE(UWE)
13
RAS
14
LCAS(NC)
29 UCAS(CAS)
28
DQ16 39
NC
11
NC(LWE)
12
NC/A9
15
OE 27
GND 35
GND 21
VCC
6
VCC
20
VCC
1
GND 40
NC
30
U2
256KX16 DRAM SOJ
AA0
AA1
AA2
AA3
AA4
AA5
AA6
AA7
AA8
AA9
MBD[0..15]
1 16
2 15
3 14
4 13
5 12
6 11
7 10
8 9
RP1
33X8
-ROEAB
-CASAL
-CASBL
-RRASA
-RCASAH
-RCASAL
-RWEA
-RRASA
-RCASAH
-RCASAL
-RWEA
MBD0
MBD1
MBD2
MBD3
MBD4
MBD5
MBD6
MBD7
MBD8
MBD9
MBD10
MBD11
-ROEAB
VPIA8
VPIA9
VPIA10
VPIA11
VPIA12
VPIA13
VPIA14
VPIA15
VPIA16
VPIA17
VPIA18
VPIA19
VPIA20
VPIA21
VPIA22
VPIA23
XVPIA24
XVPIA25
NOTE:
*INDICATES, COMPONENTS
NOT
MAY BE INSTALLED
FOR DEFAULT CONFIG.
XVPIA24
XVPIA25
-LDEV
VPID24
VPID25
VPID26
VPID27
VPID28
VPID29
VPID30
VPID31
R2
33
VPIA26
VPIA27
VPIA24
VPIA25
RCLK
-ADS
-RD
MIO-
VPIA24
CCLK
VPIA25
VPIA26
VPIA27
-RDYRTN -LRDY
VPID0
VPID1
VPID2
VPID3
VPID4
VPID5
VPID6
VPID7
VPID8
VPID9
VPID10
VPID11
VPID12
VPID13
VPID14
VPID15
-RRASB
-RCASBH
-RCASBL
-RRASB
-RCASBH
-RCASBL
-RWEB
MBD12
MBD13
MBD14
MBD15
P0
P1
P2
P3
P4
P5
P6
P7
R10 *0
R14 0
-RWEB
GND
NOTE:
TWO CAS & ONE WE - SYMMETRIC DRAM
DEFAULT CONFIG.
INSTALL R14,R15&R59.
TWO CAS & ONE WE - ASYMMETRIC DRAM
-RASB
-WEB
-CASBH
-LCASB
-LWEB
MVCC
REMOVE R10,R11,R56.
XR05[4,3]=00
R35 0
MBD14
MBD15
-OEAB -OEAB
-ROEAB
XR05[4,3]=01
XR05[4,3]=10
XR05[4,3]=11
TWO WE & ONE CAS - SYMMETRIC DRAM
TWO WE & ONE CAS - ASYMMETRIC DRAM
REMOVE R10,R11,R59
INSTALL R14,R15&R56
REMOVE R14,15&R56.
INSTALL R10,R11&R59.
REMOVE R14,15&R59.
INSTALL R10,R11&R56.
P[0..15]
P[0..15]
SHFCLK
M
LP
FLM
ENAVDD
RENABKL
RACTI
ENAVEE
SHFCLK
M
LP
FLM
ENAVDD
P8
P9
P10
P11
P12
P13
P14
P15
RENABKL
RACTI
ENAVEE
AVCC54X
BVCC54X
DVCC54X
IVCC54X
XVCC54X
MVCC54X
XTALIN
XTALOUT
-PWRDWN
XTALIN
XTALOUT
-PWRDWN
AGND
AVCC54X
BVCC54X
DVCC54X
IVCC54X
XVCC54X
MVCC54X
R85
33
+5CON
SYSRSET RESET
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
P2A
ACON
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
P2B
BCON
+5CON
SD7
SD6
SD5
SD4
SD3
+5CON
SD2
SD1
SD0
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9
SA8
SA7
SA6
SA17
SA18
SA19
+12V
+12V
-VSMEMR
CVCC
VPID16
GND
GND
CVCC
CVCC RED
GREEN
BLUE
HSYNC
VSYNC
RSET
RED
GREEN
BLUE
HSYNC
VSYNC
RSET
MCD0
MCD1
MCD2
MCD3
MCD4
MCD5
MCD6
MCD7
MCD8
MCD9
2X/
RC/
EC/
OS/
BOTH LOW
PCI
(CLOCK)
(ROMCS/)
(EXT CLK)
(EXT OSC)
PI
ISA
R19
*4.7K
R21
*4.7K
R17
*4.7K
AA0
AA1
AA2
AA3
AA4
AA5
N206
1 2
W1
CON2 R18
4.7K
R22
*4.7K
R20
*4.7K
R24
*4.7K
(TEST MODE)
(LOW VOLT.)
R23
*4.7K
R25
*4.7K
AA6
AA7
AA8
FOR ISA BUS CONFIGURATION.
REMOVE R20 FOR VL BUS CONFIG. (DEFAULT)
INSTALL R20 FOR ISA BUS CONFIG.
TS/
LV/
AD/
MCD[0..15]
NOTE:INSTALL JUMPER ON PINS 1-2 OF W1
CA[0..8]
RCA9
MCD10
MCD11
MCD12
MCD13
MCD14
MCD15
CA0
CA1
CA2
CA3
CA4
CA5
CA6
CA7
CA8
MCD[0..15]
CA[0..8]
RCA9
SD0
VPID17
VPID18
VPID19
VPID20
VPID21
VPID22
VPID23
VPID25
VPID26
VPID27
VPID28
VPID29
VPID30
VPID31
VPID24
(SOCKET)
4
5
6
U9B
74ACT32
A0
10
A1
9
A2
8
A3
7
A4
6
A5
5
A6
4
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
27
A15
1
CE
20
OE
22
D0 11
D1 12
D2 13
D3 15
D4 16
D5 17
D6 18
D7 19
VCC 28
U16
27C256-150
14MHZIN
SA0
SD[0..7]
DO NOT INSTALL R34 OR
OR R70, IF Y1 IS
INSTALLED.
1
2
3
1
4
U9A
74ACT32
1
2
3
1
4
U8A
74ACT00
R70
*100
14MHZR2
+5CON
GVCC
SA17
SA16
GVCC
N202
14MHZIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
P2C
CCON
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
P2D
DCON
SA5
SA4
SA3
SA2
SA1
SA0
SA19
+5CON
SA18
SA15
-VSMEMR
INSTALL R84 & U16=27C512
REMOVE R83
FOR LARGE BIOS OPTION
9
10
8
U9C
74ACT32
12
13
11
U9D
74ACT32
N201
N204
GVCC
SA15
R83
*0
R84
0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
SA8
SA9
SA10
SA11
SA12
SA13
SA14
N203
N250
N225
BIOS FOR VL BUS
(REMOVE U16 FOR ISA BUS CONFIG.)
65540 OR 65545
GVCC
SD1
SD2
SD3
SD4
SD5
SD6
SD7
GVCC
-RCASCH
-RRASC
-RCASCL
-RWEC
-ROEC
-RRASC
-RCASCH
-RCASCL
-RWEC
-ROEC
FILE: DK54XR2.SCH MP
POWER ON CONFIG OPTIONS
Install R20 for ISA bus.
FAB REV. A
