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Functional Description
EIDE Interface
The PBC EIDE interface is capable of accelerated PIO transfers as well as acting as a PCI bus master on behalf of an IDE DMA slave device. The EIDE interface provides a primary and secondary IDE interface, for up to four IDE devices and supports
The Primary EIDE channel is routed to the J5 User I/O connector for interfacing to two Compact FLASH cards on the transition module.
USB Interface
The PBC contains a USB Host Controller (HC) that includes the root hub and two USB ports with
Each USB port is routed to the J3 User I/O connector to interface with the transition module. The MCPN750A SBC provides monitoring for each USB channel VCC output. Fusing for the USB VCC outputs is provided on the Transition Module. Refer to the
ISA Interrupt Controller
The PBC contains two 8259 interrupt controllers to support ISA interrupts. The PBC supports programmable interrupt routing and programmable edge or level triggering. Refer to the MCPN750A CompactPCI Single Board Computer Programmers Reference Guide (MCPN750A/PG) for interrupt routing information.
ISA DMA Channels
The PBC supports seven 8237 compatible DMA channels. ISA compatible type A, B and F timing is supported. These DMA channels are not used since there are no ISA DMA devices.
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