Specifications

Chapter 3. Theory of Operation
8
Configuration Registers
As shown in the "Configuration Registers Mapping" table, the DEC21140A uses eight configuration
registers for initialization and configuration to identify and query the DEC21140A.
Configuration Registers Mapping
Configuration Register Identifier I/O Address Offset
Identification CFID 00H
Command and Status CFCS 04H
Revision CFRV 08H
Latency timer CFLT 0CH
Base I/O address CBIO 10H
Base memory address CBMA 14H
Reserved 18H-38H
Interrupt CFIT 3CH
Driver area CFDA 40H
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