Fpga Registers; Table 5-5 Fpga Memory Map - 16-Bit Chip Select - GE C2K Hardware Reference Manual

5.2 FPGA Registers

The C2K includes a FPGA to provide programmable logic circuitry for peripheral resources and
miscellaneous 'glue logic'. The FPGA, located on the 32-bit Device Bus, contains registers that
perform the following functions:
• Board status and control
• Interrupt status and control
• GPIO status and control
• USART
• Counter/timers
Table 5-5 lists the FPGA memory map for the 16-bit chip select. Addresses are given as word
addresses as required by the MV64460.
FPGA memory map - 16-bit Chip Select
Table 5-5
Address
Main
0x0 Revision
0x8 Status
0x10 Control
0x12 Reset Control
Interrupt
0x20 Interrupt Mask Reg 1
0x22 Unused
0x24 Interrupt Summary Status 1
0x26 Unused
0x28 SMI Mask
0x2A SMI Status
GPIO
0x30 GPIO Direction
0x32 GPIO Polarity
0x34 GPIO Output Type
0x36 GPIO Interrupt Type
0x38 GPIO De-Bounce Enable
0x40 GPIO Input Data Read
0x42 GPIO I/O Data
0x44 GPIO Interrupt Status
0x46 GPIO Interrupt Mask
0x4C GPIO Clear
0x4E GPIO Set
Counter/Timers Configuration Registers
0x50 Counter Enable
C2K User's Guide
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