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®
Intel IQ31244 Customer
Reference Board
User’s Manual
April 2004
Order Number: 252933-001
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® INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO SALE AND/OR USE OF INTEL PRODUCTS, INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT, OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel Corporation may
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Contents Contents 1.0 Introduction ...............................................................................................................................7 1.1 Features................................................................................................................................9 1.2 Electrical Specifications ......................................................................................................10 1.2.1 SATA Drive Enclosures .............................
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Contents Figures ® 1Intel IQ31244 Customer Reference Board Block Diagram......................................................... 8 2 Component Layout Diagram (not to scale)................................................................................. 12 ® 3Intel 80321 I/O Processor Block Diagram ................................................................................17 ® 4Intel 80321 I/O Processor Interrupt Connections ...............................................................
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Contents Revision History Date Revision Description April 2004 001 Initial release User’s Manual 5
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Contents THIS PAGE INTENTIONALLY LEFT BLANK 6 User’s Manual
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® Intel IQ31244 Customer Reference Board 1.0 Introduction ® The Intel IQ31244 Customer Reference Board (hereafter called “IQ31244”) is a FlexATX ® ® motherboard based on the Intel 80321 I/O Processor. The Intel third-party part number for this motherboard is MB-701. This platform is capable of operating at a maximum of 100 MHz PCI-X on both the secondary and ® primary PCI buses (refer to Figure 1). The IQ31244 features Intel 31244 PCI-X to Serial ATA ® Controllers on the secondary side of
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® Intel IQ31244 Customer Reference Board ® Figure 1. Intel IQ31244 Customer Reference Board Block Diagram #( !" # $ ) !" 01 % & ’ % & ’ 2 2 ,,+ ,,+ . 6 4 /
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® Intel IQ31244 Customer Reference Board 1.1 Features The features of the IQ31244 are described in Table 1. Table 1. Features and Descriptions Feature Description ® Processor Intel 80321 I/O Processor Options for the clock on 64-bit bus: 100 MHz PCI-X Primary PCI 66 MHz PCI-X 66 MHz conventional PCI Two RJ45 shielded magnetic LED gigabit connectors ® Ethernet Ports Gigabit Ethernet debugging/download ports (using Intel 82546EB Dual-Port Gigabit Ethernet Controller) PCI Slot 64-
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® Intel IQ31244 Customer Reference Board 1.2 Electrical Specifications The electrical specifications of the IQ31244 are given in Table 2. ® Table 2. Intel IQ31244 Customer Reference Board Power Requirements Current Current Voltage (Typical) (Maximum) +3.3 V 3.19 Amps 4.56 Amps +5 V 1.6 mAmps 2.28 mAmps +12 V 0.0 Amps 0.0 Amps -12 V 0.0 Amps 0.0 Amps Most ATX power-supply units (PSUs) regulate off the 5 V signal. When no devices are drawing from the 5 V supply, the ATX PSU does not supply 3.3
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® Intel IQ31244 Customer Reference Board 1.4 Physical Characteristics Table 4 provides the physical characteristics of the IQ31244. Table 4. Physical Characteristics Characteristic Description Dimensions (width × height) 9.0" × 7.5" (228.6 mm × 190.5 mm) Form factor FlexATX PCI expansion slot Expansion card slot NOTE: Use only PCI-X expansion cards. Power supply connector ATX (Molex* 39-29-9202 or equivalent) User’s Manual 11
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ATX POWER CONN + + DDR SDRAM DIMM CONN R557 + + + + + + + C10 R549 + + + + + + R618 + EXPANSION SLOT ON PWR SYS LED3 LED0 LED3 LED3 LED0 LED0 ® Intel IQ31244 Customer Reference Board 1.5 Physical Configuration Figure 2 (not to scale) shows the location of jumpers, connectors, and ICs on the IQ31244 motherboard. Refer to this figure when component locations are referenced later in the manual. Figure 2. Component Layout Diagram (not to scale) J1 SERIAL PORT ENGINEERING SAMPLE VTT CYCLONE MICRO
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® Intel IQ31244 Customer Reference Board 1.6 Reference Information Table 5 provides a list of reference information for the components used in this platform. Table 5. Documents and Manufacturers Document Manufacturer ® Intel IQ31244 PCI-X Motherboard with Serial ATA Controllers and Ethernet Controller User’s Manual (252933) ® Intel 80321 I/O Processor Developer’s Manual (273517) ® Intel 80321 I/O Processor Datasheet (273518) ® Intel 80321 I/O Processor Design Guide (273520) ® Intel
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® Intel IQ31244 Customer Reference Board 2.0 PCI-X Interface The IQ31244 contains two 64-bit PCI-X buses. The primary PCI bus, clocked at up to 100 MHz, ® ® interfaces with the Intel 80321 I/O Processor, the Intel 82546 Dual-Port Gigabit Ethernet ® Controller, the Intel 31154 133 MHz PCI Bridge, and the PCI-X expansion slot. Note: The PCI-X expansion slot must be used for PCI-X cards only. ® The secondary PCI bus, clocked at 100 MHz, provides the interface between the Intel 31154 ® 133 MHz
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® Intel IQ31244 Customer Reference Board 2.1 PAL Arbitration Circuit The IQ31244 provides a Programmable Analog Logic (PAL) arbitration circuit on the primary PCI-X bus. A rotating priority arbitration scheme with a host and three agents is used. The priority rotates as shown in Table 7. The arbiter evaluates all requests and grants the bus to the highest- priority requesting device. On reset, the host is granted the bus, and agent 0 (PCI-X bridge) has the next-highest priority. Table 7. R
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® Intel IQ31244 Customer Reference Board ® 3.0 Intel 80321 I/O Processor ® ® The Intel 80321 I/O Processor is based on the Intel XScale micro-architecture core (compliant with ARM* architecture). The on-board 80321 processor supports 64-bit applications with operating frequency of up to 100 MHz. The processor operates in conventional PCI mode or in PCI-X mode as defined by the PCI-X Addendum to the PCI Local Bus Specification, Revision 1.0a. The processor has the following features: ® In
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® Intel IQ31244 Customer Reference Board ® Figure 3. Intel 80321 I/O Processor Block Diagram % $ " " "## ! " User’s Manual 17
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® Intel IQ31244 Customer Reference Board 3.1 Interrupts ® ® The Intel 80321 I/O Processor is built around an Intel XScale core, which has four external interrupt lines designated XINT0# through XINT3#. In the 80321 processor, these interrupt lines are not directly connected to external interrupts, but pass through a layer of external interrupt routing logic. Figure 4 shows the interrupt connections on the processor. ® Figure 4. Intel 80321 I/O Processor Interrupt Connections
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® Intel IQ31244 Customer Reference Board 3.2 General-Purpose I/O Unit ® The Intel 80321 I/O Processor has eight general-purpose I/O GPIO[7:0] pins to control or monitor external devices in the I/O subsystem: The GPIO[0] and GPIO[1] signals are for CompactFlash* status. The GPIO[2] signal can be set to sound the buzzer. The buzzer can be disabled by adding a jumper onto Z14. The Flash ROM signal VPEN is assigned to GPIO[4] to allow software connection for code/data protection. The
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® Intel IQ31244 Customer Reference Board 3.4 SDRAM EEPROM The EEPROM located on the SDRAM module contains identification and configuration information. Start-up code must read this information on power-up and must properly configure the ® Intel XScale processor to the SDRAM type. 3.5 Temperature Sensors The National Semiconductor* LM75 temperature sensors have over-temperature trip points that trigger an interrupt when crossed. The sensors are placed on the board at U8 and U35. They share
