Computer Hardware User Manual

Table Of Contents
1-40 Computer Group Literature Center Web Site
Programming Issues
1
Note This is a 16-bit register
Notes
1. Refer to the MPU Port and MPU Channel Attention register entries.
2. After resetting, you must write the System Configuration Pointer to
the command registers before writing to the MPU Channel
Attention register. Writes to the System Configuration Pointer must
be upper word first, lower word second.
General Timer 1 low GT1l 2B B R Sync
General Timer 1 high GT1h 2A B R Sync
General Timer 2 GT2 29 B R Sync
Transmit Timer Register TTR 29 B R Async
Table 1-10. 82596CA Ethernet LAN Memory Map
82596CA Ethernet LAN Directly Accessible Registers
Data Bits
Address D31 D16 D15 D0
$FFF46000 Upper Command Word Lower Command Word
$FFF46004 MPU Channel Attention (CA)
Table 1-9. Cirrus Logic CD2401 Serial Port Memory Map (Continued)
Base Address = $FFF45000
Register Description Register
Name
Offsets Size Access