Overview; Memory Control Register (81004H) - RadiSys EPC - 6A Hardware Reference Manual

EPC-6A Hardware Reference

Overview

Where a bit position has been described by a 0 or 1, the bit is a ROM bit, and writing to it
has no effect. Unless otherwise noted, all registers and bit values are readable and
writeable. TSEN, when set, inhibits the front panel toggle switch from generating a reset
Register
Memory Control Register
VME A21–16 Address Reg
ID Register, lower
ID Register, upper
Device Type Reg, lower
Device Type Reg, upper
Status/Control Reg, lower
Status/Control Reg, upper
Slave Offset Reg, lower
Slave Offset Reg, upper
Protocol Register, lower
Protocol Register, upper
Response Register, lower
Response Register, upper
Message High Reg, lower
Message High Reg, upper
Message Low Reg, lower
Message Low Reg, upper
VME Modifier Register
VME Interrupt State Reg
VME Interrupt Enable Reg
VME Event State Register
VME Event Enable Register
Module Status/Control Reg
Interrupt Generator Register
FSA7–0 Address Register
FS A15–8 Address Register
FS A19–16 Address Register
Flash Data Register
SRAM Data Register
LED Register

Memory Control Register (81004h)

Memory Control Register
This register contains two control bits that pertain to the DRAM and the flash memory:
EVME
54
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Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 I/O port
1
1
1
0
SRIE RELM
SLE
1
0
1
0
LOCK
0
VME WA23
IRQ7
IRQ7
1
1
DONE
1
TSEN LED6
If set, allows E page (0E0000h) access to and from the VMEbus. This is
necessary because the Phoenix BIOS occupies the memory region 0E0000h ~
0FFFFF at POST. When POST is complete and just before INT 19, this bit is
set to allow VME access.
reserved
–
VMEbus address bits 21 16
1 1 0 1
0 0 0 1
1 0 0 1
0 0 1 1
ARBPRI
1 SYSR SYSF ARBM
1 1 1 1
0 0 1 1
1 1 1 1
1 0 1 1
1 ABMH 1 1
0 0 0 1 RRDY WRDY
–
22 res IACK res
IRQ6 IRQ5 IRQ4 IRQ3
IRQ6 IRQ5 IRQ4 IRQ3
1 1 1 WDT
1 1 1 WDT
AS DS0 DS1 res
1 1 1 0
Flash/SRAM address bits 7
Flash/SRAM address bits 15
reserved Flash/SRAM address bits 19
LED5 LED4 LED3
reserved
EVME CDEN 8104h
res res 8130h
1 0 0 8140h
1 1 1 8141h
1 0 0 8142h
1 1 1 8143h
RDY PASS NOSF 8144h
1 1 1 8145h
1 1 1 8146h
1 SLAVE BASE 8147h
1 1 1 8148h
1 1 1 8149h
ULA 814Ah
1 814Bh
814Ch
814Dh
814Eh
814Fh
AM4 AM2 AM1 8151h
IRQ2 IRQ1 MSGR 8152h
IRQ2 IRQ1 MSGR 8153h
ACFA BERR SYSF 8154h
ACFA BERR SYSF 8155h
res FWDT ENRE 8156h
INTERRUPT-OUT 815Fh
–
0 8380h
–
8 8381h
–
16 8382h
8383h
8384h
LED2 LED1 LED0 8385h
EVME CDEN