DM9000_09 DAVICOM [Davicom Semiconductor, Inc.], DM9000_09 Datasheet - Page 24

• Manufacturer Part Number: DM9000_09
• Description: ISA to Ethernet MAC Controller with Integrated 10/100 PHY
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

8.2 Basic Mode Status Register (BMSR) - 01
Final
Version: DM9000-DS-F03
April 23, 2009
1.10-1.7
0.6-0.0
1.15
1.14
1.13
1.12
1.11
0.8
0.7
1.6
1.5
1.4
1.3
1.2
Bit
Auto-negotiatio
Auto-negotiatio
100BASE-TX
100BASE-TX
MF preamble
Duplex mode
100BASE-T4
Remote fault
Collision test
RESERVED
RESERVED
suppression
half duplex
half duplex
10BASE-T
10BASE-T
Link status
full duplex
full duplex
Bit Name
Complete
Ability
n
n
0,RO/LH
0,RO/LL
Default
0,RO/P
1,RO/P
1,RO/P
1,RO/P
1,RO/P
1,RO/P
1,RW
0,RW
0,RO
0,RO
0,RO
0,RO
0,
Duplex Mode
1 = Full duplex operation. Duplex selection is allowed when
Auto-negotiation is disabled (bit 12 of this register is cleared). With
enabled auto-negotiation, this bit reflects the duplex capability
selected by auto-negotiation
0 = Normal operation
Collision Test
1 = Collision test is enabled. When set, this bit will cause the COL
signal to be asserted in response to the assertion of TX_EN
0 = Normal operation
Reserved
Write as 0, ignore on read
100BASE-T4 Capable
1 = Able to perform in 100BASE-T4 mode
0 = Not able to perform in 100BASE-T4 mode
100BASE-TX Full Duplex Capable
1 = Able to perform 100BASE-TX in full duplex mode
0 = Not able to perform 100BASE-TX in full duplex mode
100BASE-TX Half Duplex Capable
1 = Able to perform 100BASE-TX in half duplex mode
0 = Not able to perform 100BASE-TX in half duplex mode
10BASE-T Full Duplex Capable
1 = Able to perform 10BASE-T in full duplex mode
0 = Not able to perform 10BASE-TX in full duplex mode
10BASE-T Half Duplex Capable
1 = Able to perform 10BASE-T in half duplex mode
0 = Not able to perform 10BASE-T in half duplex mode
Reserved
Write as 0, ignore on read
MII Frame Preamble Suppression
1 = PHY will accept management frames with preamble suppressed
0 = PHY will not accept management frames with preamble
suppressed
Auto-negotiation Complete
1 = Auto-negotiation process completed
0 = Auto-negotiation process not completed
Remote Fault
1 = Remote fault condition detected (cleared on read or by a chip
reset). Fault criteria and detection method is specific PHY
implementation. This bit will set after the RF bit in the ANLPAR (bit
13, register address 05) is set
0 = No remote fault condition detected
Auto Configuration Ability
1 = Able to perform auto-negotiation
0 = Not able to perform auto-negotiation
Link Status
1 = Valid link is established (for either 10Mbps or 100Mbps
operation)
ISA to Ethernet MAC Controller with Integrated 10/100 PHY
Description
DM9000
24