AP53 (Rev. 3.0) Motherboard Settings and Configuration

ACER, INC.

AP53 (Rev. 3.0)

Processor
Pentium/Pentium MMX/AMK5/AMK6/CX 6x86
Processor Speed
75/90/100/120/133/150/166/200/233MHz
Chip Set
Intel
Video Chip Set
None
Maximum Onboard Memory
512MB
Maximum Video Memory
None
Cache
256/512KB
BIOS
AMI
Dimensions
250mm x 220mm
I/O Options
32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, USB connector, IR connector, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
PS/2 mouse interface
CN4
IR connector
CN14
USB connector
CN5
CPU fan connector
CN15
Serial port 2
CN6
Keylock
CN16 Pins 1&2
Serial port 1
CN7
Power LED
CN16 Pins 3-5
Floppy drive interface
CN8
Speaker
CN16 Pins 7-10
Parallel port
CN9
Green PC LED
CN16 Pins 12&13
IDE interface 1
CN10
Suspend switch
CN16 Pins 15-17
IDE interface 2
CN11
Reset switch
CN16 Pins 19&20
IDE LED connector
CN12
32-bit PCI slots
PCI1-4

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
PS/2 mouse IRQ12 enabled
JP4
Closed

PS/2 mouse IRQ12 disabled
JP4
Open
»
CMOS memory normal operation
JP5
Pins 1 & 2 closed

CMOS memory clear
JP5
Pins 2 & 3 closed
»
On board I/O controller enabled
JP8
Pins 1 & 2 closed

On board I/O controller disabled
JP8
Pins 2 & 3 closed
»
I/O voltage set at 3.43V
JP12
Pins 1 & 2 closed

I/O Voltage set at 3.52V
JP12
Pins 3 & 4 closed

Factory configured - do not alter
JP1301
Pins 2 & 3 closed

Factory configured - do not alter
JP1302
Pins 2 & 3 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
4MB
(2) 512K x 36
None
8MB
(2) 1M x 36
None
8MB
(2) 512K x 36
(2) 512K x 36
12MB
(2) 512K x 36
(2) 1M x 36
16MB
(2) 2M x 36
None
16MB
(2) 1M x 36
(2) 1M x 36
20MB
(2) 512K x 36
(2) 2M x 36
24MB
(2) 1M x 36
(2) 2M x 36
32MB
(2) 4M x 36
None
32MB
(2) 2M x 36
(2) 2M x 36
36MB
(2) 512K x 36
(2) 4M x 36
40MB
(2) 1M x 36
(2) 4M x 36
48MB
(2) 2M x 36
(2) 4M x 36
64MB
(2) 8M x 36
None
64MB
(2) 4M x 36
(2) 4M x 36
68MB
(2) 512K x 36
(2) 8M x 36
72MB
(2) 1M x 36
(2) 8M x 36

DRAM CONFIGURATION (CONT.)
Size
Bank 0
Bank 1
80MB
(2) 2M x 36
(2) 8M x 36
96MB
(2) 4M x 36
(2) 8M x 36
128MB
(2) 8M x 36
(2) 8M x 36
128MB
(2) 16M x 36
None
136MB
(2) 1M x 36
(2) 16M x 36
144MB
(2) 2M x 36
(2) 16M x 36
160MB
(2) 4M x 36
(2) 16M x 36
256MB
(2) 16M x 36
(2) 16M x 36
256MB
(2) 32M x 36
None
264MB
(2) 1M x 36
(2) 32M x 36
272MB
(2) 2M x 36
(2) 32M x 36
288MB
(2) 4M x 36
(2) 32M x 36
320MB
(2) 8M x 36
(2) 32M x 36
384MB
(2) 16M x 36
(2) 32M x 36
512MB
(2) 32M x 36
(2) 32M x 36

CACHE CONFIGURATION
Size
Bank 0
256KB
(2) 32K x 32
512KB
(2) 64K x 32

CPU SPEED SELECTION (INTEL)
Speed
Clock Speed
Multiplier
JP10
JP1
75MHz
50MHz
1.5x
1 & 2, 3 & 4
1 & 2, 3 & 4
90MHz
60MHz
1.5x
1 & 2, 3 & 4
1 & 2
100MHz
66MHz
1.5x
1 & 2
3 & 4
120MHz
60MHz
2x
3 & 4, 5 & 6
1 & 2
133MHz
66MHz
2x
3 & 4, 5 & 6
3 & 4
150MHz
60 MHz
2.5x
5 & 6, 7 & 8
1 & 2
166MHz
66MHz
2.5x
5 & 6, 7 & 8
3 & 4
200MHz
66MHz
3x
1 & 2, 7 & 8
3 & 4
Note : Pins designated should be in the closed position

CPU SPEED SELECTION (INTEL MMX)
Speed
Clock Speed
Multiplier
JP10
JP1
150MHz
60MHz
2.5x
5 & 6, 7 & 8
1 & 2
166MHz
66MHz
2.5x
5 & 6, 7 & 8
3 & 4
200MHz
66MHz
3x
1 & 2, 7 & 8
3 & 4
233MHz
66MHz
3.5x
1 & 2, 3 & 4
3 & 4
Note : Pins designated should be in the closed position

CPU SPEED SELECTION (CX 6X86)
Speed
Clock Speed
Multiplier
JP10
JP1
120MHz
50MHz
2x
3 & 4, 5 & 6
1 & 2, 3 & 4
133MHz
55MHz
2x
3 & 4, 5 & 6
All open
150MHz
60MHz
2x
3 & 4, 5 & 6
1 & 2
166MHz
66MHz
2x
3 & 4, 5 & 6
3 & 4
Note : Pins designated should be in the closed position

CPU SPEED SELECTION (AMK5)
Speed
Clock Speed
Multiplier
JP10
JP1
75MHz
50MHz
1.5x
1 & 2, 3 & 4
1 & 2, 3 & 4
90MHz
60MHz
1.5x
1 & 2, 3 & 4
1 & 2
100MHz
66MHz
1.5x
1 & 2, 3 & 4
3 & 4
120MHz
60MHz
1.5x
1 & 2, 3 & 4
1 & 2
133MHz
66MHz
1.5x
1 & 2, 3 & 4
3 & 4
166MHz
66MHz
1.75x
5 & 6, 7 & 8
3 & 4
Note : Pins designated should be in the closed position

CPU SPEED SELECTION (AMK6)
Speed
Clock Speed
Multiplier
JP10
JP1
166MHz
66MHz
2.5x
5 & 5, 7 & 8
3 & 4
200MHz
66MHz
3x
1 & 2, 7 & 8
3 & 4
233MHz
66MHz
3.5x
1 & 2, 3 & 4
3 & 4
Note : Pins designated should be in the closed position

CPU VOLTAGE SELECTION (SINGLE)
Voltage
JP11
2.5V
Pins 5 & 6 closed
2.8V
Pins 9 & 10 closed
2.9V
Pins 11 & 12 closed
3.2V
Pins 7 & 8 closed
3.45V
Pins 1 & 2 closed
3.52V
Pins 3 & 4 closed

CPU VOLTAGE SELECTION (DUAL)
Voltage
JP11
JP12
JP3
JP13
2.8V
9 & 10
1 & 2
All open
1 & 2, 3 & 4
2.9V
11 & 12
1 & 2
All open
1 & 2, 3 & 4
3.2V
7 & 8
1 & 2
All open
1 & 2, 3 & 4
3.43V
1 & 2
1 & 2
1 & 2, 3 & 4
All open
3.52V
3 & 4
1 & 2
1 & 2, 3 & 4
All open
Note : Pins designated should be in the closed position

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AP53 (Rev. 3.0) Motherboard Settings and Configuration

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Processor	Pentium/Pentium MMX/AMK5/AMK6/CX 6x86
Processor Speed	75/90/100/120/133/150/166/200/233MHz
Chip Set	Intel
Video Chip Set	None
Maximum Onboard Memory	512MB
Maximum Video Memory	None
Cache	256/512KB
BIOS	AMI
Dimensions	250mm x 220mm
I/O Options	32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, USB connector, IR connector, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse interface	CN4	IR connector	CN14
USB connector	CN5	CPU fan connector	CN15
Serial port 2	CN6	Keylock	CN16 Pins 1&2
Serial port 1	CN7	Power LED	CN16 Pins 3-5
Floppy drive interface	CN8	Speaker	CN16 Pins 7-10
Parallel port	CN9	Green PC LED	CN16 Pins 12&13
IDE interface 1	CN10	Suspend switch	CN16 Pins 15-17
IDE interface 2	CN11	Reset switch	CN16 Pins 19&20
IDE LED connector	CN12	32-bit PCI slots	PCI1-4

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	PS/2 mouse IRQ12 enabled	JP4	Closed
	PS/2 mouse IRQ12 disabled	JP4	Open
»	CMOS memory normal operation	JP5	Pins 1 & 2 closed
	CMOS memory clear	JP5	Pins 2 & 3 closed
»	On board I/O controller enabled	JP8	Pins 1 & 2 closed
	On board I/O controller disabled	JP8	Pins 2 & 3 closed
»	I/O voltage set at 3.43V	JP12	Pins 1 & 2 closed
	I/O Voltage set at 3.52V	JP12	Pins 3 & 4 closed
	Factory configured - do not alter	JP1301	Pins 2 & 3 closed
	Factory configured - do not alter	JP1302	Pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
4MB	(2) 512K x 36	None
8MB	(2) 1M x 36	None
8MB	(2) 512K x 36	(2) 512K x 36
12MB	(2) 512K x 36	(2) 1M x 36
16MB	(2) 2M x 36	None
16MB	(2) 1M x 36	(2) 1M x 36
20MB	(2) 512K x 36	(2) 2M x 36
24MB	(2) 1M x 36	(2) 2M x 36
32MB	(2) 4M x 36	None
32MB	(2) 2M x 36	(2) 2M x 36
36MB	(2) 512K x 36	(2) 4M x 36
40MB	(2) 1M x 36	(2) 4M x 36
48MB	(2) 2M x 36	(2) 4M x 36
64MB	(2) 8M x 36	None
64MB	(2) 4M x 36	(2) 4M x 36
68MB	(2) 512K x 36	(2) 8M x 36
72MB	(2) 1M x 36	(2) 8M x 36

DRAM CONFIGURATION (CONT.)
Size	Bank 0	Bank 1
80MB	(2) 2M x 36	(2) 8M x 36
96MB	(2) 4M x 36	(2) 8M x 36
128MB	(2) 8M x 36	(2) 8M x 36
128MB	(2) 16M x 36	None
136MB	(2) 1M x 36	(2) 16M x 36
144MB	(2) 2M x 36	(2) 16M x 36
160MB	(2) 4M x 36	(2) 16M x 36
256MB	(2) 16M x 36	(2) 16M x 36
256MB	(2) 32M x 36	None
264MB	(2) 1M x 36	(2) 32M x 36
272MB	(2) 2M x 36	(2) 32M x 36
288MB	(2) 4M x 36	(2) 32M x 36
320MB	(2) 8M x 36	(2) 32M x 36
384MB	(2) 16M x 36	(2) 32M x 36
512MB	(2) 32M x 36	(2) 32M x 36

CACHE CONFIGURATION
Size	Bank 0
256KB	(2) 32K x 32
512KB	(2) 64K x 32

CPU SPEED SELECTION (INTEL)
Speed	Clock Speed	Multiplier	JP10	JP1
75MHz	50MHz	1.5x	1 & 2, 3 & 4	1 & 2, 3 & 4
90MHz	60MHz	1.5x	1 & 2, 3 & 4	1 & 2
100MHz	66MHz	1.5x	1 & 2	3 & 4
120MHz	60MHz	2x	3 & 4, 5 & 6	1 & 2
133MHz	66MHz	2x	3 & 4, 5 & 6	3 & 4
150MHz	60 MHz	2.5x	5 & 6, 7 & 8	1 & 2
166MHz	66MHz	2.5x	5 & 6, 7 & 8	3 & 4
200MHz	66MHz	3x	1 & 2, 7 & 8	3 & 4
Note : Pins designated should be in the closed position

CPU SPEED SELECTION (INTEL MMX)
Speed	Clock Speed	Multiplier	JP10	JP1
150MHz	60MHz	2.5x	5 & 6, 7 & 8	1 & 2
166MHz	66MHz	2.5x	5 & 6, 7 & 8	3 & 4
200MHz	66MHz	3x	1 & 2, 7 & 8	3 & 4
233MHz	66MHz	3.5x	1 & 2, 3 & 4	3 & 4
Note : Pins designated should be in the closed position

CPU SPEED SELECTION (CX 6X86)
Speed	Clock Speed	Multiplier	JP10	JP1
120MHz	50MHz	2x	3 & 4, 5 & 6	1 & 2, 3 & 4
133MHz	55MHz	2x	3 & 4, 5 & 6	All open
150MHz	60MHz	2x	3 & 4, 5 & 6	1 & 2
166MHz	66MHz	2x	3 & 4, 5 & 6	3 & 4
Note : Pins designated should be in the closed position

CPU SPEED SELECTION (AMK5)
Speed	Clock Speed	Multiplier	JP10	JP1
75MHz	50MHz	1.5x	1 & 2, 3 & 4	1 & 2, 3 & 4
90MHz	60MHz	1.5x	1 & 2, 3 & 4	1 & 2
100MHz	66MHz	1.5x	1 & 2, 3 & 4	3 & 4
120MHz	60MHz	1.5x	1 & 2, 3 & 4	1 & 2
133MHz	66MHz	1.5x	1 & 2, 3 & 4	3 & 4
166MHz	66MHz	1.75x	5 & 6, 7 & 8	3 & 4
Note : Pins designated should be in the closed position

CPU SPEED SELECTION (AMK6)
Speed	Clock Speed	Multiplier	JP10	JP1
166MHz	66MHz	2.5x	5 & 5, 7 & 8	3 & 4
200MHz	66MHz	3x	1 & 2, 7 & 8	3 & 4
233MHz	66MHz	3.5x	1 & 2, 3 & 4	3 & 4
Note : Pins designated should be in the closed position

CPU VOLTAGE SELECTION (SINGLE)
Voltage	JP11
2.5V	Pins 5 & 6 closed
2.8V	Pins 9 & 10 closed
2.9V	Pins 11 & 12 closed
3.2V	Pins 7 & 8 closed
3.45V	Pins 1 & 2 closed
3.52V	Pins 3 & 4 closed

CPU VOLTAGE SELECTION (DUAL)
Voltage	JP11	JP12	JP3	JP13
2.8V	9 & 10	1 & 2	All open	1 & 2, 3 & 4
2.9V	11 & 12	1 & 2	All open	1 & 2, 3 & 4
3.2V	7 & 8	1 & 2	All open	1 & 2, 3 & 4
3.43V	1 & 2	1 & 2	1 & 2, 3 & 4	All open
3.52V	3 & 4	1 & 2	1 & 2, 3 & 4	All open
Note : Pins designated should be in the closed position