Special Registers; Special Control Register; Revision Indicator Register - VersaLogic Python EBX-11 Reference Manual

Special Control Register

SCR (READ/WRITE) 1D0h
D7 D6
PLED Reserved
Bit Mnemonic
D7 PLED
–
D6-D0

Revision Indicator Register

REVIND (READ ONLY) 1D1h
D7
PC4
This register is used to indicate the revision level of the EBX-11.
Bit Mnemonic
D7-D3 PC4-PC0
D2-D0 REV1-REV0
EBX-11 Reference Manual

Special Registers

D5 D4
Reserved Reserved
Table 33: Special Control Register Bit Assignments
Description
Light Emitting Diode — Controls the programmable LED on connector J4.
0 = Turns LED off
1 = Turns LED on
Reserved – These bits have no function.
D6 D5 D4
PC3 PC2 PC1
Table 34: Revision Indicator Register Bit Assignment
Description
Product Code — These bits are hard-coded to represent the product type. The
EBX-11 always reads as 00101. Other codes are reserved for future products.
PC4 PC3 PC2
0 0 1
Note: These bits are read-only.
Revision Level — These bits represent the EBX-11 circuit revision level.
REV2 REV1 REV0
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
Note: These bits are read-only.
D3 D2
Reserved Reserved
D3 D2
PC0 REV2
PC1 PC0 Product Code
0 1
EBX-11
Revision Level
Rev. 1.xx through 3.xx
Rev. 4.xx and 5.00
EBX-11g, h Rev. 5.01
EBX-11g, h PLD download only
EBX-11g, h Rev. 6.xx
7
D1 D0
Reserved Reserved
D1 D0
REV1 REV0
62