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Motherboard Layout and Information for Models With a Via 694X Chipset and an Intel Pentium (R) III Processor

HP Pavilion models with this motherboard
The following HP Pavilion PC models ship with a motherboard containing the Via 694X Chipset and Pentium III Processor:
HP Pavilion X6xx Series
HP Pavilion X7xx and XLxxx Series
8628 (AP)
8700I (US)
8629 (AP)
8705I (US)
8631 (AP)
8722 (France)
8632 (AP)
8725 (France)
8636 (AP)
8740 (France)
8660 (Sweden)
8760C (US)
8660 (Norway)
8775C (US/Canada)
8674D (US)
8785C (US/Canada)
8674F (US)
XL766 (US)
8680 (France)
8680 (Norway)
8680 (Sweden)
9688C (US)
System board layout
    Figure : Motherboard layout
  1. TV out chip
  2. System battery
  3. PCI connectors
  4. AGP port
  5. Socket 370 processor connector
  6. DIMM sockets (memory)
Jumper locations and functions
There are no jumper blocks to set on this motherboard.
About system memory
The motherboard has three dual in-line memory module (DIMM) sockets. Minimum memory size is 16 MB; maximum memory size is 768 MB. The BIOS automatically detects memory type, size, and speed.
The motherboard supports the following memory features:
  • 168-pin DIMMs with gold-plated contacts
  • 100 MHz SDRAM depending on system
  • Non-ECC (64-bit) and ECC (72-bit) memory
  • 3 V memory only
  • Single- or double-sided DIMMs
SDRAM
Synchronous DRAM (SDRAM) improves memory performance through memory access that is synchronous with the memory clock. This simplifies the timing design and increases memory speed because all timing is dependent on the number of memory clock cycles.
 note:
To function properly, SDRAM DIMMs must meet the Intel 4-clock, 100 MHz, unbuffered SDRAM specification for either 64-bit or 72-bit SDRAM.
System memory configuration
SDRAM
Bank 0
SDRAM
Bank 1
SDRAM
Bank 2
Total System Memory
Empty
Empty
16 MB
16 MB
Empty
Empty
32 MB
32 MB
Empty
Empty
64 MB
64 MB
Empty
Empty
128 MB
128 MB
Empty
16 MB
Empty
16 MB
Empty
16 MB
16 MB
32 MB
Empty
16 MB
32 MB
48 MB
Empty
16 MB
64 MB
80 MB
Empty
16 MB
128 MB
144 MB
Empty
32 MB
Empty
32 MB
Empty
32 MB
16 MB
48 MB
Empty
32 MB
32 MB
64 MB
Empty
32 MB
64 MB
96 MB
Empty
32 MB
128 MB
160 MB
Empty
64 MB
Empty
64 MB
Empty
64 MB
16 MB
80 MB
Empty
64 MB
32 MB
96 MB
Empty
64 MB
64 MB
128 MB
Empty
64 MB
128 MB
192 MB
Empty
128 MB
Empty
128 MB
Empty
128 MB
16 MB
144 MB
Empty
128 MB
32 MB
160 MB
Empty
128 MB
64 MB
192 MB
Empty
128 MB
128 MB
256 MB
16 MB
16 MB
16 MB
48 MB
256 MB
256 MB
256 MB
768 MB
IDE support
The motherboard provides 2 independent high performance bus-mastering PCI IDE interfaces capable of supporting PIO Mode 3, Mode 4, and ATAPI devices (e.g., CD-ROM). The system BIOS supports logical block addressing (LBA) and extended cylinder sector head (ECSH) translation modes. IDE device transfer rate and translation mode are automatically detected by the system BIOS.
Usually programmed I/O operations require a substantial amount of processor bandwidth. However, in multitasking operating systems, the bandwidth freed by bus mastering IDE can be devoted to other tasks while disk transfers are occurring.
Universal Serial Bus (USB) support
The motherboard features 4USB ports that permit the direct connection of 4 USB peripherals, one to each port. The motherboard fully supports the universal host controller interface (UHCI) and uses software drivers that are UHCI-compatible.
Features of USB include:
  • Self-identifying peripherals that can be hot-plugged
  • Automatic mapping of function to driver and configuration
  • Support for isochronous and asynchronous transfer types over the same set of wires
  • Support for up to 127 physical devices
  • Guaranteed bandwidth and low latencies appropriate for telephony, audio, and other applications
  • Error-handling and fault-recovery mechanisms built into the protocol
Primary power supply connector
Pin
Signal Name
Pin
Signal Name
1
+3.3 V
11
+3.3 V
2
+3.3 V
12
-12 V
3
Ground
13
Ground
4
+5 V
14
PW_ON
5
Ground
15
Ground
6
+5 V
16
Ground
7
Ground
17
Ground
8
PWRGD (Power Good)
18
-5 V
9
+5 VSB (Standby for real-time clock)
19
+5 V
10
+12 V
20
+5 V
Power supply fan connector
Pin
Signal Name
1
Rotation
2
+12 V (Suspend)
3
Ground
CPU fan connector
Pin
Signal Name
1
Rotation
2
+12 V
3
Ground
Front panel connector
The front panel connector includes headers for the following connections; Power LED, Speaker, Reset switch, Power switch., Sleep switch.
    Figure : Front Panel Connector
  1. Message LED
  2. Keyboard Lock
  3. SMI Lead
  4. Speaker Connector
  5. Reset SW
  6. Power LED
  7. IDE LED
  8. ATX Power Switch
PS/2 keyboard and mouse ports
Pin
Signal Name
1
Data
2
No Connect
3
Ground
4
+5 Vcc (fused)
5
Clock
6
No Connect
USB connectors
Pin
Signal Name
1
Power
2
USBP0# (USBP1#)
3
USBP0 (USBP1)
4
Ground
Serial port connector
Pin
Signal Name
1
Data Carrier Detect (DCD)
2
Receive Data (RXD)
3
Transmit Data (TXD)
4
Data Terminal Ready (DTR)
5
Ground
6
Data Set Ready (DSR)
7
Request to Send (RTS)
8
Clear to Send (CTS)
9
Ring indicator
Parallel port
Signal Name
Pin
Pin
Signal Name
STROBE-
1
14
AUTO FEED
Data Bit 0
2
15
ERROR*
Data Bit 1
3
16
INIT*
Data Bit 2
4
17
SELECT IN*
Data Bit 3
5
18
Ground
Data Bit 4
6
19
Ground
Data Bit 5
7
20
Ground
Data Bit 6
8
21
Ground
Data Bit 7
9
22
Ground
ACK*
10
23
Ground
BUSY
11
24
Ground
Error
12
25
Ground
SELECT
13
IDE connectors
Signal Name
Pin
Pin
Signal Name
Reset IDE
1
2
Ground
Host Data 7
3
4
Host Data 8
Host Data 6
5
6
Host Data 9
Host Data 5
7
8
Host Data 10
Host Data 4
9
10
Host Data 11
Host Data 3
11
12
Host Data 12
Host Data 2
13
14
Host Data 13
Host Data 1
15
16
Host Data 14
Host Data 0
17
18
Host Data 15
Ground
19
20
Key
DDRQ0(DDRQ1)
21
22
Ground
I/O Write
23
24
Ground
I/O Read
25
26
Ground
IORDY
27
28
Vcc pull-up
DDACK0(DDACK1)
29
30
Ground
IRQ14(IRQ15)
31
32
Reserved
Addr 1
33
34
Reserved
Addr 0
35
32
Addr 2
Chip Select 1P(1S)
37
38
Chip Select 3P (3S)
Activity
39
40
Ground
Floppy connector
Signal Name
Pin
Pin
Signal Name
Ground
1
2
DENSEL
Ground
3
4
Reserved
Key
5
6
FDEDIN
Ground
7
8
Index
Ground
9
10
Motor Enable A
Ground
11
12
Drive Select B
Ground
13
14
Drive Select A
Ground
15
16
Motor Enable B
MSEN1
17
18
DIR
Ground
19
20
STEP
Ground
21
22
Write Data
Ground
23
24
Write Enable
Ground
25
26
Track 00
MSEN0
27
28
Write Protect
Ground
29
30
Read Data
Ground
31
32
Side 1 Select
Ground
33
34
Diskette Change

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