Digilent 6003-410-000P-KIT - Manual (Page 65)

XUP Virtex-II Pro Development System www.xilinx.com 65
UG069 (v1.0) March 8, 2005
Using System ACE Controllers for Non-Volatile Storage R
Using System ACE Controllers for Non-Volatile Storage
In addition to programming the FPGA and storing bitstreams, the System ACE controller
can be used for general-purpose non-volatile storage. Each System ACE controller
provides an MPU interface to allow a microprocessor to access the attached CompactFlash
or IBM Microdrive, allowing this storage media to be used as a file system.
The MPU interface provides a useful means of monitoring the status of and controlling the
System ACE controller, as well as CompactFlash card READ/WRITE data. The MPU is not
required for normal operation, but when it is used, it provides numerous capabilities. This
interface enables communication between an MPU device, a CompactFlash card, and the
FPGA target system.
The MPU interface is composed of a set of registers that provide a means for
communicating with CompactFlash control logic, configuration control logic, and other
resources in the System ACE controller. This interface can be used to read the identity of a
CompactFlash device and read/write sectors from or to a CompactFlash device.
The MPU interface can also be used to control configuration flow. It enables monitoring of
the configuration status and error conditions. The MPU interface can be used to delay
TX_CLOCK I D3 LVTTL – –
TX_ENABLE O C4 LVTTL 8 mA SLOW
RX_DATA[0] I K6 LVTTL – –
RX_DATA[1] I K5 LVTTL – –
RX_DATA[2] I J1 LVTTL – –
RX_DATA[3] I K1 LVTTL – –
RX_DATA_VALID I M7 LVTTL – –
RX_ERROR I J2 LVTTL – –
RX_CLOCK I M8 LVTTL – –
ENET_RESET_Z O G6 LVTTL 8 mA SLOW
CARRIER_SENSE I C5 LVTTL – –
COL_DETECT I D5 LVTTL – –
ENET_SLEW0 O B3 LVTTL 8 mA SLOW
ENET_SLEW1 O A3 LVTTL 8 mA SLOW
MDIO I/O M5 LVTTL 8 mA SLOW
MDC O M6 LVTTL 8 mA SLOW
MDINIT_Z I G5 LVTTL – –
PAUSE O J4 LVTTL 8 mA SLOW
SSN_DATA I J3 LVTTL 8 mA SLOW
Table 2-19: 10/100 ETHERNET Connections (Continued)
Signal Direction FPGA Pin I/O Type Drive Slew