78q8430-100igt Maxim Integrated Products, Inc., 78q8430-100igt Datasheet - Page 74
78q8430-100igt
Manufacturer Part Number
78q8430-100igt
Description
10/100 Ethernet Mac And Phy
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.78Q8430-100IGT.pdf
(88 pages)
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78Q8430 Data Sheet
7.7
7.7.1
The 78Q8430 PHY implements sixteen-bit registers which are accessible via the MAC Station
Management Access Registers. The supported registers are shown below. Unsupported registers will be
read as all zeroes. The 78Q8430 PHY responds to PHYAD value 00001b.
The types of PHY Register access are summarized in Table 34.
Notes:
1. These registers can only be accessed indirectly via the MDDAR and MDCAR registers. They cannot
2. The default values annotated with () are dependent on configuration states.
74
be accessed directly through the GBI address space.
PHY Management Registers
PHY Register Overview
Address
0
1
2
3
4
5
6
7-15
16
17
18
19
20-22
23
24
Symbol
MR0
MR1
MR2
MR3
MR4
MR5
MR6
MR16
MR17
MR18
MR19
MR23
MR24
Table 34: PHY Register Group
Name
Control
Status
PHY Identifier 1
PHY Identifier 2
Auto-Negotiation Advertisement
Auto-Negotiation Link Partner Ability
Auto-Negotiation Expansion
Reserved
Vendor Specific
Interrupt Control/Status
Diagnostic Register
Transceiver Control
Reserved
LED Configuration
MDI/MDIX Control
Default (Hex)
3100
(7849)
000E
7237
(01E1)
0001
0000
0000
(0140)
0000
0000
4XXX
XXXX
0010
(00C0)
DS_8430_001
Rev. 1.2
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