Product Information

The Front-Panel CompactFlash Adapter PMC, when mated to a host or carrier card, provides an interface between the PCI bus and two Type-I or Type-II CompactFlash (CF) devices mounted on the Adapter. One CF device, connected to the Primary IDE channel, is available out the front-panel.

A second CF device, connected to the Secondary IDE channel, is mounted on the body of the adapter and is secured with a locking mechanism. Additionally, the Secondary IDE channel of the adapter can interface other IDE/ATA devices, via its rear I/O connector (PN4).

Built around a Silicon Image PCI-680 IDE controller chipset, the product supports the Ultra 133 data-transfer protocol over the IDE channels. It also supports slower bus-master data transfer rates to accommodate hard disk drives (HDDs) and CF devices that do not support Ultra 133. The signals for DMA transfer support on Compact Flash are connected to the 680 controller.

The PCI bus is a 32-bit bus at 33 MHz. A built-in phase-lock loop generates an internal clock from the 33 MHz PCI bus clock. This internal clock is used to transfer data at the rate of 133 MB/sec on the IDE interface.

The CompactFlash sites are configured to operate in true IDE mode. PCMCIA mode is not required or supported. Additionally, the sites can be set to operate as either master or a slave device via DIP switches on the board.

On-board BIOS, provided by Silicon Image and resident in flash memory, supports boot up configuration. This feature is supported only on Intel platforms.

Two LEDs on the front-panel provides activity status for the primary and secondary IDE channels.

The IDE Controller PMC supports four interrupts. Interrupt configuration is determined by DIP switch settings. Default setting is Interrupt A.

The product is the follow on to a prior generation 648-based adapter. This product is enhanced with a 680 chipset as well as support for an on-board Compact Flash device and is RoHS compliant.

In addition, a screw-on locking mechanism is provided on the front-panel to secure the front-panel compact flash device to the adapter. The pin-out on PN4 for rear-I/O support is the same as on the 648-based adapter, however the Secondary IDE channel is connected to the PN4 instead of the Primary channel.

Please note that this product does not support “live-insertion” of Compact Flash devices and should be viewed as a semi-permanent installation for CF devices. The system must be powered down prior to swapping out the front-panel CF device.

Please see Silicon Image (www. siim-age.com) regarding driver support for common operating systems.

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