Visible to Intel only — GUID: iga1401316273254
Ixiasoft
Visible to Intel only — GUID: iga1401316273254
Ixiasoft
17.2. Functional Description
As shown in the block diagram, the Compact Flash core provides two Avalon® -MM agent interfaces: the ide agent port for accessing the registers on the CompactFlash device and the ctl agent port for accessing the core's internal registers. These registers can be used by Avalon® -MM host peripherals such as a Nios® II processor to control the operations of the Compact Flash core and to transfer data to and from the CompactFlash device.
You can set the Compact Flash core to generate two active-high interrupt requests (IRQs): one signals the insertion and removal of a CompactFlash device and the other passes interrupt signals from the CompactFlash device.
The Compact Flash core maps the Avalon® -MM bus signals to the CompactFlash device with proper timing, thus allowing Avalon® -MM host peripherals to directly access the registers on the CompactFlash device.
For more information, refer to the CF+ and CompactFlash specifications available at CompactFlash Association website.