VTECH INDUSTRIES, INC.
MB520ND
|
Processor |
CX M1/AM K5/Pentium |
|
Processor Speed |
75/90/100/120/133/150/166/180/200MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
128MB (EDO supported) |
|
Maximum Video Memory |
None |
|
Cache |
256/512KB |
|
BIOS |
Award |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), cache slot, IR connector, USB connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Floppy drive interface |
CN1 |
IR connector |
J10 |
|
IDE interface 1 |
CN2 |
Speaker |
J11 |
|
IDE interface 2 |
CN3 |
Reset switch |
J19 |
|
USB connector |
J1 |
IDE interface LED |
JP14 |
|
PS/2 mouse interface |
J2 |
Green PC connector |
JP15 |
|
Power LED & keylock |
J3 |
Chassis fan power |
JP18 |
|
Serial port 1 |
J6 |
32-bit PCI slots |
PC1 – PC4 |
|
Serial port 2 |
J7 |
Cache slot |
SL1 |
|
Parallel port |
J9 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
Flash BIOS type select SST/Winbond/ATMEL/MX |
JP9 |
Pins 1 & 2 closed | |
|
Flash BIOS type select Intel |
JP9 |
Pins 2 & 3 closed | |
|
Flash BIOS voltage select 12v |
JP10 |
Pins 2 & 3 closed | |
|
Flash BIOS voltage select 5v |
JP10 |
Pins 1 & 2 closed | |
|
» |
CMOS memory normal operation |
JP16 |
Open |
|
CMOS memory clear |
JP16 |
Closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
8MB |
(2) 1M x 36 |
None |
|
16MB |
(2) 2M x 36 |
None |
|
16MB |
(2) 1M x 36 |
(2) 1M x 36 |
|
24MB |
(2) 2M x 36 |
(2) 1M x 36 |
|
32MB |
(2) 4M x 36 |
None |
|
32MB |
(2) 2M x 36 |
(2) 2M x 36 |
|
40MB |
(2) 4M x 36 |
(2) 1M x 36 |
|
48MB |
(2) 4M x 36 |
(2) 2M x 36 |
|
64MB |
(2) 8M x 36 |
None |
|
64MB |
(2) 4M x 36 |
(2) 4M x 36 |
|
72MB |
(2) 8M x 36 |
(2) 1M x 36 |
|
80MB |
(2) 8M x 36 |
(2) 2M x 36 |
|
96MB |
(2) 8M x 36 |
(2) 4M x 36 |
|
128MB |
(2) 8M x 36 |
(2) 8M x 36 |
|
Note: Board accepts EDO memory. Banks are interchangeable. | ||
|
DIMM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
8MB |
(1) 1M x 64 |
None |
|
16MB |
(1) 2M x 64 |
None |
|
16MB |
(1) 1M x 64 |
(1) 1M x 64 |
|
24MB |
(1) 2M x 64 |
(1) 1M x 64 |
|
32MB |
(1) 4M x 64 |
None |
|
32MB |
(1) 2M x 64 |
(1) 2M x 64 |
|
40MB |
(1) 4M x 64 |
(1) 1M x 64 |
|
48MB |
(1) 4M x 64 |
(1) 2M x 64 |
|
64MB |
(1) 4M x 64 |
(1) 4M x 64 |
|
Note: Banks are interchangeable. | ||
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
SL1 |
|
256KB |
None |
256KB module installed |
|
256KB |
(2) 32K x 32 |
Not installed |
|
512KB |
(2) 32K x 32 |
256KB module installed |
|
512KB |
(2) 64K x 32 |
Not installed |
|
512KB |
None |
512KB module installed |
|
CPU SPEED SELECTION (AMD) | ||||||
|
CPU speed |
Clock speed |
Multiplier |
JP2 |
JP3 |
JP6 |
JP7 |
|
75MHz |
50MHz |
1.5x |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
|
90MHz |
60MHz |
1.5x |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
|
100MHz |
66MHz |
1.5x |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
120MHz |
60MHz |
1.5x |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
|
133MHz |
66MHz |
1.5x |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
150MHz |
60MHz |
2x |
1 & 2 |
2 & 3 |
1 & 2 |
2 & 3 |
|
166MHz |
66MHz |
2x |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | ||||||
|
CPU SPEED SELECTION (CYRIX) | ||||||
|
CPU speed |
Clock speed |
Multiplier |
JP2 |
JP3 |
JP6 |
JP7 |
|
120MHz |
50MHz |
2x |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
|
133MHz |
55MHz |
2x |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
|
150MHz |
60MHz |
2x |
1 & 2 |
2 & 3 |
1 & 2 |
2 & 3 |
|
166MHz |
66MHz |
2x |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
|
200MHz |
50MHz |
1.5x |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | ||||||
|
CPU SPEED SELECTION (INTEL) | ||||||
|
CPU speed |
Clock speed |
Multiplier |
JP2 |
JP3 |
JP6 |
JP7 |
|
75MHz |
50MHz |
1.5x |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
|
90MHz |
60MHz |
1.5x |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
|
100MHz |
66MHz |
1.5x |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
120MHz |
60MHz |
2x |
1 & 2 |
2 & 3 |
1 & 2 |
2 & 3 |
|
133MHz |
66MHz |
2x |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
|
150MHz |
60MHz |
2.5x |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
|
166MHz |
66MHz |
2.5x |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
|
180MHz |
60MHz |
3x |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
|
200MHz |
66MHz |
3x |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | ||||||
|
CPU TYPE SELECTION | ||||
|
Type |
J13 |
J14 |
J15 |
J16 |
|
CX 6X86 |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
AM K5 (B, C, F) |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
AM K5 (H, J, K) |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
P54C |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
P55C |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
CPU VOLTAGE SELECTION (SINGLE) | ||
|
Voltage |
JP5 |
JP17 |
|
3.38v |
Pins 7 & 8 closed |
Pins 2 & 3 closed |
|
3.52v |
Pins 9 & 10 closed |
Pins 1 & 2 closed |
|
CPU VOLTAGE SELECTION (DUAL) | |||
|
Voltage |
V core |
JP5 |
JP17 |
|
3.38v |
2.5v |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
3.38v |
2.7v |
Pins 3 & 4 closed |
Pins 2 & 3 closed |
|
3.38v |
2.93v |
Pins 5 & 6 closed |
Pins 2 & 3 closed |
|
3.52v |
2.5v |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
3.52v |
2.7v |
Pins 3 & 4 closed |
Pins 1 & 2 closed |
|
3.52v |
2.93v |
Pins 5 & 6 closed |
Pins 1 & 2 closed |
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