Datasheet

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4.0 Register Set (Continued)
DP83816
4.2 Operational Registers
The DP83816 provides the following set of operational registers mapped into PCI memory space or I/O space. Writes to
reserved register locations are ignored. Reads to reserved register locations return undefined values.
Table 4-2 Operational Register Map
Offset Tag Description Access
MAC/BIU Registers
00h CR Command Register R/W
04h CFG Configuration Register R/W
08h MEAR EEPROM Access Register R/W
0Ch PTSCR PCI Test Control Register R/W
10h ISR Interrupt Status Register RO
14h IMR Interrupt Mask Register R/W
18h IER Interrupt Enable Register R/W
1Ch IHR Interrupt Holdoff Register R/W
20h TXDP Transmit Descriptor Pointer Register R/W
24h TXCFG Transmit Configuration Register R/W
28-2Ch Reserved Reserved
30h RXDP Receive Descriptor Pointer Register R/W
34h RXCFG Receive Configuration Register R/W
38 Reserved Reserved
3Ch CCSR CLKRUN Control/Status Register R/W
40h WCSR Wake on LAN Control/Status Register R/W
44h PCR Pause Control/Status Register R/W
48h RFCR Receive Filter/Match Control Register R/W
4Ch RFDR Receive Filter/Match Data Register R/W
50h BRAR Boot ROM Address R/W
54h BRDR Boot ROM Data R/W
58h SRR Silicon Revision Register RO
5Ch MIBC Management Information Base Control Register R/W
60-78h MIB Management Information Base Data Registers RO
7Ch Reserved Reserved
Internal Phy Registers
80h BMCR Basic Mode Control Register R/W
84h BMSR Basic Mode Status Register RO
88h PHYIDR1 PHY Identifier Register #1 RO
8Ch PHYIDR2 PHY Identifier Register #2 RO
90h ANAR Auto-Negotiation Advertisement Register R/W
94h ANLPAR Auto-Negotiation Link Partner Ability Register R/W
98h ANER Auto-Negotiation Expansion Register R/W
9Ch ANNPTR Auto-Negotiation Next Page TX R/W
A0-BCh Reserved Reserved
C0h PHYSTS PHY Status Register RO
C4h MICR MII Interrupt Control Register R/W
C8h MISR MII Interrupt Status Register R/W
CCh Reserved Reserved
D0h FCSCR False Carrier Sense Counter Register R/W
D4h RECR Receive Error Counter Register R/W
D8h PCSR 100 Mb/s PCS Configuration and Status Register R/W
DCh-E0h Reserved Reserved
E4h PHYCR PHY Control Register R/W
E8h TBTSCR 10Base-T Status/Control Register R/W
ECh-FCh Reserved Reserved