Altima AC101 Series, Manual, Page: 33 / 64

Preliminary Data Sheet
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AC101
06/04/01
B r o a d c o m
Document AC101-DS01-405-R¥¥¥¥¥ Register Summary Page 23
S e c t i o n 4 : R e g i s t e r D e s c r i p t i o n s
R
EGISTER
S
UMMARY
The first eight registers of the MII register set are defined by the MII specification. In addition to these required registers are
several Altima-specific registers. There are reserved registers and/or bits that are for Altima internal use only. (Register num-
bers are in Decimal format, the values are in Hex format).
Legend:
• RW Read and Write Access
• SC Self Clearing
• LL Latch Low until cleared by reading
• RO Read Only
• RC Cleared on Read
• LH Latch High until Cleared by reading
Note
When writing to registers it is recommended that a read/modify/write operation be performed, as unin-
tended bits may get set to unwanted states. This applies to all registers, including those with reserved
bits.
Table 13: Register Summary
Register Description Default
MII-Specified Registers
0 Control Register 3000
1 Status Register 7849
2 PHY Identifier 1 Register 0022
3 PHY Identifier 2 Register 561B
4 Auto-Negotiation Advertisement Register 01E1
5 Auto-Negotiation Link Partner Ability Register 0001
6 Auto-Negotiation Expansion Register 0004
7 Next Page Advertisement Register 2001
Altima-Specified Registers
8-15 Reserved XXXX
16 Polarity and Interrupt Register 03C0
17 Interrupt Control/Status Register 0000
18 Diagnostic Register 5020
19 Power Management & Loopback Register 8060
20 Cable Measurement Register XXXX
21 Mode Control Register 0304