28 IMP2B 3U cPCI Single Board Computer
Publication No. IMP2B-0HH/5
3.15 EPLD
The EPLD provides the following functions:
•
Flash and NVRAM address decoding and write protection
•
Reset logic and configuration
•
Control and Status registers
•
Semaphore register
•
GPIO controller
•
CompactPCI arbiter
3.15.1
Internal EPLD Registers
The following addresses are offset from the MV64560 DEV_CS1 base address:
Table
3-9 EPLD Registers
PLD Address Description
0x00000000
0x00000002
0x00000004
Device/Bus Information Register 1
0x00000006
Device/Bus Information Register 2
0x00000008
0x0000000A
0x0000000C
0x0000000E
0x00000010
0x00000012
0x00000014
0x00000016
0x00000018
0x0000001A
0x0000001C
0x0000001E
0x00000020
0x00000040
0x00000060
0x00000400
GPIO Direction Control Register
0x00000402
0x00000404
GPIO Polarity Control Register
0x00000406
0x00000408
GPIO Interrupt Active Register
0x0000040A
GPIO Interrupt Enable Register
0x0000040C