Special Registers; Special Control Register; Pld Revision And Type Register - VersaLogic EPM-14 Cougar Reference Manual

Special Control Register

SCR (Read/Write) 1D0h
D7 D6
PLED Reserved
Bit Mnemonic
D7 PLED
D6-D0

PLD Revision and Type Register

REVTYP (Read-only) 1D1h
D7
PLDREV4
This register is used to indicate the PLD code revision level and model of the EPM-14.
Bit Mnemonic
D7-D3 PLDREV
D2
D1 PLDCUST
D0 PLDDEV
EPM-14 Reference Manual
D5 D4
Reserved Reserved
Table 20: Special Control Register Bit Assignments
Description
Light Emitting Diode – Controls the programmable LED on connector J7.
0 = Turns LED off
1 = Turns LED on
– Reserved – These bits have no function.
D6 D5
PLDREV3 PLDREV2 PLDREV1
Table 21: Revision and Type Register Bit Assignment
Description
PLD Revision Level – Represents the EPM-14 PLD revision level. These bits are
read-only.
Bit 4 Bit 3
0 0
– Reserved – This bit has no function.
Custom PLD – Indicates whether the EPM-14 has a custom PLD. This bit is
read-only.
0 = Standard PLD
1 = Custom PLD
PLD in Development – Indicates whether the EPM-14 PLD is in development.
This bit is read-only.
0 = PLD not in development
1 = PLD in development

Special Registers

D3 D2
Reserved Reserved
D4 D3 D2
PLDREV0 Reserved
Bit 2 Bit 1 Bit 0
0 0 1
7
D1 D0
Reserved Reserved
D1 D0
PLDCUST PLDDEV
PLD Revision Level
3.01
39