DM9008C View Datasheet(PDF) - Davicom Semiconductor, Inc.
Part Name
Description
MFG CO.
'DM9008C' PDF : 52 Pages View PDF
DM9008C
Ethernet Controller with General Processor Interface
6.4 TX Status Register I ( 03H ) for packet index I
Bit
Name
Default
Description
Transmit Jabber Time Out
7
TJTO
PS0,RO It is set to indicate that the transmitted frame is truncated due to more than 2048
bytes are transmitted
Loss of Carrier
6
LC
PS0,RO It is set to indicate the loss of carrier during the frame transmission. It is not valid in
internal Loop-back mode
No Carrier
5
NC
PS0,RO It is set to indicate that there is no carrier signal during the frame transmission. It is
not valid in internal Loop-back mode
4
LC
PS0,RO
Late Collision
It is set when a collision occurs after the collision window of 64 bytes
3
COL
PS0,RO
Collision Packet
It is set to indicate that the collision occurs during transmission
2
EC
PS0,RO
Excessive Collision
It is set to indicate that the transmission is aborted due to 16 excessive collisions
1:0 RESERVED 0,RO Reserved
6.5 TX Status Register II ( 04H ) for packet index I I
Bit
Name
Default
Description
Transmit Jabber Time Out
7
TJTO
PS0,RO It is set to indicate that the transmitted frame is truncated due to more than 2048
bytes are transmitted
Loss of Carrier
6
LC
PS0,RO It is set to indicate the loss of carrier during the frame transmission. It is not valid in
internal Loop-back mode
No Carrier
5
NC
PS0,RO It is set to indicate that there is no carrier signal during the frame transmission. It is
not valid in internal Loop-back mode
4
LC
PS0,RO
Late Collision
It is set when a collision occurs after the collision window of 64 bytes
3
COL
PS0,RO Collision packet, collision occurs during transmission
2
EC
PS0,RO
Excessive Collision
It is set to indicate that the transmission is aborted due to 16 excessive collisions
1:0 RESERVED 0,RO Reserved
6.6 RX Control Register ( 05H )
Bit
Name
Default
7 RESERVED PS0,RW
6
WTDIS PS0,RW
5 DIS_LONG PS0,RW
4 DIS_CRC PS0,RW
3
ALL
PS0,RW
2
RUNT PS0,RW
1
PRMSC PS0,RW
0
RXEN PS0,RW
Description
Reserved
Watchdog Timer Disable
When set, the Watchdog Timer (2048 bytes) is disabled. Otherwise it is enabled
Discard Long Packet
Packet length is over 1522byte
Discard CRC Error Packet
Pass All Multicast
Pass Runt Packet
Promiscuous Mode
RX Enable
Preliminary
16
Version: DM9008C-13-DS-P01
January 15, 2008
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