AX88140A Ver la hoja de datos (PDF) - Unspecified
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AX88140A Datasheet PDF : 46 Pages
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AX88140A
PRELIMINARY
3.2 Configuration Space
3.2.1 Configuration ID Register (CSID)
FIELD
31:16
15:0
R/W
R
R
DESCRIPTION
Device ID :
Provides the unique AX88140A ID number (1400H)
Vender ID :
Provides the manufacturer of the AX88140A (125BH)
Tab - 6 CSID Configuration ID Register Description
3.2.2 Command and Status Configuration Register (CSCS)
FIELD
31
30
29
28
26:25
24
23
22:9
8
6
2
1
0
R/W
R
R
R
R
R
R
R
-
R/W
R/W
R/W
R/W
R/W
TYPE
STATUS
STATUS
STATUS
STATUS
STATUS
STATUS
STATUS
RESERVED
COMMAND
COMMAND
COMMAND
COMMAND
COMMAND
DESCRIPTION
Detected Parity Error : active high
Signal System Error : active high
Received Master Abort : active high
Received Target Abort : active high
Device Select Timing : fixed at 01 which indicates a medium assertion of DEVSEL#
Data Parity Report : active high
Fast Back-to-Back : always set
System Error Enable : active high
Parity Error Response : active high
Master Operation : active high
Memory Space Access : active high
I/O Space Access : Active high
Tab - 7 CSCS Command and Status Configuration Register
3.2.3 Configuration Revision Register (CSRV)
FIELD
31:24
23:16
7:4
3:0
R/W
R
R
R
R
DESCRIPTION
Base Class : Always equal to 2H that indicates the network controller
Subclass : Always equal to 0H that indicates the fast Ethernet controller
Revision Number : Indicates the AX88140A revision number and is equal to 0H
Step Number : Indicates the AX88140A step number and is referred to current silicon step.
Tab - 8 CSRV Configuration Revision Register Description
3.2.4 Configuration Latency Timer Register (CSLT)
FIELD
31:16
15:8
7:0
R/W
R/W
R/W
R/W
DESCRIPTION
Reserved
Configuration Latency Timer. The value after hardware reset equal to 0h.
Reserved
Tab - 9 CSLT Configuration ID Register Description
18
ASIX ELECTRONICS CORPORATION
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