Intel® Pentium® 4 processor
Intel® Celeron® processor
The Intel® 845E chipset provides support for a faster system bus,
DDR200/266 memory and dual USB 2.0 compatible interfaces.
The Intel® 845E chipset supports a system bus speed of 400/533MHz.
| ISA |
16-bit/8MHz |
| PCI |
32-bit/33MHz |
| System/FSB |
400/533MHz |
AMIBIOS8 with built-in advanced CMOS setup for system parameters, peripheral management for configuring on-board peripherals, PCI-to-PCI bridge support and PCI interrupt steering. Supports flash devices for BIOS upgrading via floppy interface. Also provides integrated support for USB mass storage devices such as USB CD-ROM, CD-RW, etc. Custom BIOSs are available upon request.
The Intel® Pentium® 4 processor options on the T4I support a 512K integrated on-die Advanced Transfer Cache (L2). The cache is an 8-way set associative cache running at full processor core frequency.
The Intel® Celeron® processor supports a 128K integrated on-die Advanced Transfer Cache (L2).
Both processors include a 12K level one (L1) Execution Trace Cache and 8K L1 data cache.
Double Data Rate (DDR) memory improves memory data speeds demanded in data-intensive applications. The DDR200/266 interface is a single channel interface coming off the Memory Controller hub and terminating at two DIMM module sockets. The DIMM sockets can be independently populated with either PC1600 or PC2100 unbuffered memory modules. The memory interface supports auto detection of memory up to 2GB. The bandwidth of the DDR200/266 memory interface is 1600MB/s or 2100MB/s.
The Ultra160 SCSI interface uses an Adaptec SCSI controller that supports SCSI device data transfer operations up to 160MB/s. The interface complies with the SPI-3 standard and is compatible with both Single-ended and Low Voltage Differential (LVD) SCSI I/O. Software drivers are available for most popular operating systems.
The PCI bus interface supports a 32-bit PCI backplane interface running at a 33MHz bus speed.
The T4I provides a 16-bit ISA bus interface to the backplane for legacy ISA slots.
The Winbond W83783S chip supports hardware monitoring. The functions monitored are voltage, fan speed and temperature. The T4I hardware monitor driver allows the user to program the monitor limits to provide a trigger point for the application software. This allows the application program to monitor these trigger points in order to send system alert messages or perform corrective action.
Supports up to two floppy disk drives in combinations of 360K to 2.88MB.
The Intel® 69030 video interface has 4MB of on-chip memory and supports pixel resolutions up to 1280 x 1024. Software drivers are available for most popular operating systems.
The Super I/O controller supports two full-function serial ports with independently programmable baud rates. The controller has two high-speed, NS16C550 compatible UARTs with Send/Receive 16-byte FIFOs. The IRQ for each serial port has BIOS selectable addressing.
There are dual Ethernet LAN ports on the T4I. LAN Port 1 functions as a traditional 10/100Base-T port, while LAN Port 2 offers Gigabit (1Gb/s) connectivity in addition to the traditional 10/100Base-T interface. RJ-45 connectors located on the I/O bracket provide the mechanical interface to the Ethernet networks.
The T4I supports two high-speed USB 2.0 ports for data transfers up to 480Mbit/sec. It also supports USB 1.1 devices for data transfers at 12 or 1.5Mbit/sec. The Universal Serial Bus (USB) is an interface allowing for connectivity to many standard PC peripherals via an external port.
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Dual high-performance PCI Bus Master EIDE interfaces are capable of supporting up to two IDE disk drives each in a master/slave configuration. The interface supports Ultra ATA/100 with synchronous ATA mode transfers up to 100MB per second.
The programmable watchdog timer provides a system reset with a total range of 30ms to 60 seconds. The programmable increments of the watchdog are 30ms, 10s and 60s.
The parallel port interface is compatible with IBM PC/XT®, PC/AT®, PS/2T, Enhanced Parallel Port (EPP1.7, EPP1.9) and Extended Capabilities Port (ECP) modes of operation. Both the EPP and ECP modes are IEEE 1284 compliant. The parallel port has BIOS selectable addressing.
The mini DIN connector located on the I/O bracket provides an external interface for a PS/2 mouse and keyboard. A "Y" adapter plugged into the mini DIN connector allows the PS/2 mouse and keyboard to share the same port. Internal PS/2 mouse and keyboard headers are also available. A self-resetting fuse protects the +5V line of the keyboard and the mouse.
Typical Values
Pentium® 4:
| CPU |
+5V* |
+12V# |
+3.3V* |
| 2.8GHz/533MHz |
4.05A |
4.68A |
2.75A |
| 2.5GHz/533MHz |
3.96A |
3.91A |
2.75A |
| 2.0GHz/400MHz |
4.00A |
3.38A |
2.75A |
Celeron®:
| CPU |
+5V* |
+12V# |
+3.3V* |
| 2.5GHz/400MHz |
4.01A |
3.85A |
2.72A |
| 2.0GHz/400MHz |
4.01A |
3.43A |
2.72A |
-12V @ < 100mA*
* From Backplane via PICMG® Connector.
# From ATX12V power supply or equivalent via P4 connector.
The Intel® Pentium® 4 processor's power requirements created the need for an additional on-board 4-pin power connector (P4). This connector requires +12V from an external power supply that conforms to the ATX12V power specification.
This external power supply should have a minimum wattage rating of at least 250W. The T4I also requires that 3.3V be applied to the backplane from the power supply.
The system power supply must conform to the power sequencing specifications of ATX compliant power supplies. Voltage levels must be regulated within a range of +/- 5%.
The T4I continuously monitors the incoming +5V and +3.3V power lines from the system backplane. If the 5V line drops below 4.75 volts or the +3.3V line drops below 2.97 volts, the T4I issues a hardware-reset command. This feature helps maintain control and allows the system to automatically restart. A two-pin header is available for applications that require an external reset switch. On-board power lines are also monitored in a similar fashion.
Built-in lithium battery for data retention of CMOS memory.
| Operating Temperature |
0° - 45° C. |
| Extended Operating Temperature* |
0° to 55° C. |
| Storage Temperature |
-40° to 70° C. |
| Humidity |
5% to 90% non-condensing. |
A Intel® Pentium® 4 processor can consume as much as 70 Watts of power on the T4I single board computer. The T4I's cooling system uses a high-reliability fan.
SBCs with processor options less than 2.8GHz use a low-profile (1.65" height) active cooling system. Overall dimensions for the T4I with these processor options, including the active cooling system are 13.3"L (338mm) x 4.8"H (121.9mm) x 1.65"W (49.1mm). SBCs with processor speeds 3.06GHz or greater use a taller active cooling system and have overall dimensions of 13.3"L (338mm) x 4.8"H (121.9mm) x 2.18"W(55.37mm).
*Trenton validates extended temperature operation for processor speeds 2.8GHz and below. The taller active cooling system must be used for extended temperature operation. Consult Trenton for details.
- IEEE P996, Personal Computer Bus Standard
- PCI Local Bus Specification 2.1
- PICMG 1.0 Specification
- Ultra160 SCSI, SPI-3 Standard
118,992 POH (Power-On Hours) at 40° C., per Bellcore.
Designed for UL 1950, CAN/CSA C22.22 Number 950-95, EN55022:1998 CLASS B, EN55024:1998, EN61000-3-2:2000, EN61000-3-3:1995
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