~ National ~ Semiconductor - Al Kossow's Bitsavers

10.0 Internal Registers (Continued)
10.1 REGISTER ADDRESS MAPPING
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10.2 REGISTER ADDRESS ASSIGNMENTS
Page 0 Address Assignments (PS1 = 0, PSO = 0)
RAO-RA3 RD WR
OOH Command (CR) Command (CR)
01H Current Local DMA Page Start Register
Address 0 (CLDAO) (PSTARD
02H Current Local DMA Page Stop Register
Address 1 (CLDA1) (PSTOP)
03H Boundary Pointer Boundary Pointer
(BNRY)
(BNRY)
04H Transmit Status Transmit Page Start
Register (TSR) Address (TPSR)
05H Number of Collisions Transmit Byte Count
Register (NCR) Register 0 (TBCRO)
06H FIFO (FIFO) Transmit Byte Count
Register 1 (TBCR 1)
07H I nterrupt Status Interrupt Status
Register (ISR) Register (ISR)
OSH
09H
Current Remote DMA Remote Start Address
Address 0 (CRDAO) Register 0 (RSARO)
Current Remote DMA Remote Start Address
Address 1 (CRDA1) Register 1 (RSAR 1)
OAH Reserved Remote Byte Count
Register 0 (RBCRO)
OBH Reserved Remote Byte Count
Register 1 (RBCR1)
OCH Receive Status Receive Configuration
Register (RSR) Register (RCR)
ODH Tally Counter 0 Transmit Configuration
(Frame Alignment Register (TCR)
Errors) (CNTRO)
OEH Tally Counter 1 Data Configuration
(CRC Errors) Register (DCR)
(CNTR1)
OFH Tally Counter 2 Interrupt Mask
(Missed Packet Register (IMR)
Errors) (CNTR2)
Page 1 Address Assignments (PS1 = 0, PSO = 1)
RAO-RA3 RD WR
OOH Command (CR) Command (CR)
01H Physical Address Physical Address
Register 0 (PARO) Register 0 (PARO)
02H Physical Address Physical Address
Register 1 (PAR1) Register 1 (PAR1)
03H Physical Address Physical Address
Register 2 (PAR2) Register 2 (PAR2)
04H Physical Address Physical Address
Register 3 (PAR3) Register 3 (PAR3)
05H Physical Address Physical Address
Register 4 (PAR4) Register 4 (PAR4)
06H Physical Address Physical Address
Register 5 (PAR5) Register 5 (PAR5)
07H Current Page Current Page
Register (CURR) Register (CURR)
OSH Multicast Address Multicast Address
Register 0 (MARO) Register 0 (MARO)
09H Multicast Address Multicast Address
Register 1 (MAR1) Register 1 (MAR1)
OAH Multicast Address Multicast Address
Register 2 (MAR2) Register 2 (MAR2)
OBH Multicast Address Multicast Address
Register 3 (MAR3) Register 3 (MAR3)
OCH Multicast Address Multicast Address
Register 4 (MAR4) Register 4 (MAR4)
ODH Multicast Address Multicast Address
Register 5 (MAR5) Register 5 (MAR5)
OEH Multicast Address Multicast Address
Register 6 (MAR6) Register 6 (MARS)
OFH Multicast Address Multicast Address
Register 7 (MAR7) Register 7 (MAR7)
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