dp83901a National Semiconductor Corporation, dp83901a Datasheet - Page 21

• Manufacturer Part Number: dp83901a
• Description: Serial Network Interface Controller
• Manufacturer: National Semiconductor Corporation

10 0 Internal Registers
Page 1 Address Assignments (PS1
RA0 – RA3
0CH
0DH
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0EH
0FH
Command (CR)
Physical Address
Register 0 (PAR0)
Physical Address
Register 1 (PAR1)
Physical Address
Register 2 (PAR2)
Physical Address
Register 3 (PAR3)
Physical Address
Register 4 (PAR4)
Physical Address
Register 5 (PAR5)
Current Page
Register (CURR)
Multicast Address
Register 0 (MAR0)
Multicast Address
Register 1 (MAR1)
Multicast Address
Register 2 (MAR2)
Multicast Address
Register 3 (MAR3)
Multicast Address
Register 4 (MAR4)
Multicast Address
Register 5 (MAR5)
Multicast Address
Register 6 (MAR6)
Multicast Address
Register 7 (MAR7)
RD
e
(Continued)
Command (CR)
Physical Address
Register 0 (PAR0)
Physical Address
Register 1 (PAR1)
Physical Address
Register 2 (PAR2)
Physical Address
Register 3 (PAR3)
Physical Address
Register 4 (PAR4)
Physical Address
Register 5 (PAR5)
Current Page
Register (CURR)
Multicast Address
Register 0 (MAR0)
Multicast Address
Register 1 (MAR1)
Multicast Address
Register 2 (MAR2)
Multicast Address
Register 3 (MAR3)
Multicast Address
Register 4 (MAR4)
Multicast Address
Register 5 (MAR5)
Multicast Address
Register 6 (MAR6)
Multicast Address
Register 7 (MAR7)
0 PS0
WR
e
1)
21
Page 2 Address Assignments (PS1
Note Page 2 registers should only be accessed for diagnostic purposes
RA0 – RA3
0DH
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0CH
0EH
0FH
They should not be modified during normal operation
Page 3 should never be modified
Command (CR)
Page Start Register
(PSTART)
Page Stop Register
(PSTOP)
Remote Next Packet
Pointer
Transmit Page Start
Address (TPSR)
Local Next Packet
Pointer
Address Counter
(Upper)
Address Counter
(Lower)
Reserved
Reserved
Reserved
Reserved
Receive Configuration Reserved
Register (RCR)
Transmit
Configuration
Register (TCR)
Data Configuration
Register (DCR)
Interrupt Mask
Register (IMR)
RD
Command (CR)
Current Local DMA
Address 0 (CLDA0)
Current Local DMA
Address 1 (CLDA1)
Remote Next Packet
Pointer
Reserved
Local Next Packet
Pointer
Address Counter
(Upper)
Address Counter
(Lower)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
e
1 PS0
WR
e
0)