DM9620 DAVICOM [Davicom Semiconductor, Inc.], DM9620 Datasheet - Page 32

• Manufacturer Part Number: DM9620
• Description: USB2.0 to 10/100M Fast Ethernet Controller
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

6.2 Basic Mode Status Register (BMSR) – 01H
Preliminary
Version: DM9620 -15-DS-P02
February 20, 2012
10-7
6-0
Bit
15
14
13
12
11
8
7
6
5
4
3
2
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
Link status
10BASE-T
10BASE-T
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
Duplex mode:
1 = Full duplex operation. Duplex selection is allowed when
Auto-negotiation is disabled (bit 12 of this register is cleared). With
auto-negotiation enabled, this bit reflects the duplex capability
selected by auto-negotiation
0 = Normal operation
Collision test:
1 = Collision test 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 PHY implementation
specific. 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)
Description
USB2.0 to Fast Ethernet Controller
DM9620
32