DM9103 Datasheet, PDF (35/89 Pages) Davicom Semiconductor, Inc. – 10/100 Mbps 3-port Ethernet Switch Controller with PCI Interface

15:12 INGRESS
11:8 EGRESS
7 RESERVED
6 PARTI_EN
5 NO_DIS_RX
4 FLOW_DIS
3 BANDWIDTH
0,RW
0,RW
0,RO
0,RW
0,RW
0,RW
0,RW
DM9103
3-port switch with PCI Interface
Ingress Rate Control
These bits define the bandwidth threshold that received packets over the threshold
are discarded.
0000: none
0001: 64Kbps
0010: 128Kbps
0011: 256Kbps
0100: 512Kbps
0101: 1Mbps
0110: 2Mbps
0111: 4Mbps
1000: 8Mbps
1001: 16Mbps
1010: 32Mbps
1011: 48Mbps
1100: 64Mbps
1101: 72Mbps
1110: 80Mbps
1111: 88Mbps
Egress Rate Control
These bits define the bandwidth threshold that transmitted packets over the
threshold are discarded.
0000: none
0001: 64Kbps
0010: 128Kbps
0011: 256Kbps
0100: 512Kbps
0101: 1Mbps
0110: 2Mbps
0111: 4Mbps
1000: 8Mbps
1001: 16Mbps
1010: 32Mbps
1011: 48Mbps
1100: 64Mbps
1101: 72Mbps
1110: 80Mbps
1111: 88Mbps
Reserved
Enable Partition Detection
Not Discard RX Packets when Ingress Bandwidth Control
When received packets bandwidth reach Ingress bandwidth threshold, the
packets over the threshold are not discarded but with flow control.
Flow control in full duplex mode, or back pressure in half duplex mode
enable
0 – enable
1 – disable
Bandwidth Control
0: Control with Ingress and Egress separately in bit 15~12 and bit 11~8.
1: Control with Ingress or Egress in bit 19~16
Preliminary datasheet
35
DM9103-DS-P02
September 26, 2007