参数资料
型号: IP178CLF
厂商: Electronic Theatre Controls, Inc.
英文描述: 8 Port 10/100 Ethernet Integrated Switch
中文描述: 8端口10/100以太网集成开关
文件页数: 76/91页
文件大小: 1244K
代理商: IP178CLF
IP178C
Preliminary Data Sheet
Copyright
2004, IC Plus Corp.
76/91
October 27, 2005
IP178C-DS-R09
PHY
Switch control register 3
9[15:14] 83[7:6]
31
MII
ROM
R/W
Description
Default
BF_STM_THR_SEL[1:0].
Broadcast storm threshold selection
00: 159 packets/10ms for 100Mbps port, or 159
packets/100ms for 10Mbps port,
01: 127 packets/10ms for 100Mbps port, or 127
packets/100ms for 10Mbps port,
10: 63 packets/10ms for 100Mbps port, or 63 packets/100ms
for 10Mbps port,
11: 31 packets/10ms for 100Mbps port, or 31 packets/100ms
for 10Mbps port
SHARE_FULL_THR_SEL[1;0].
Share buffer threshold selection
00: 160 units
01: 180 units
10: 140 units
11: 120 units
UNIT_DEFAULT_THR_SEL[1:0].
Output Queue minimum threshold selection
00: 40 units
01: 32 units
10: 48 units
11: 56 units
UNIT_LOW_THR_SEL
UNIT_HIGH_THR_SEL[1;0].
Output Queue Flow control ON threshold selection
If share buffer is over share buffer full threshold, Output Queue
Flow control ON threshold will be dynamic changed to 28.
Others,
00: 50 units
01: 70 units
10: 90 units
11: 110 units
RESERVED
PREDROP_EN
1: Drop an incoming broadcast packet if any port is
congested.
0: forward an incoming broadcast packet to un-congested
ports instead of congested ports.
PKT_LOW_THR_SEL[1:0].
Packet low water mark threshold selection
00: 40 units
01: 30 units
10: 20 units
11: 10 units
2’b11
9[13:12] 83[5:4]
2’b00
9[11:10] 83[3:2]
2’b00
9[9:8]
9[7:6]
83[1:0]
82[7:6]
2’b00
2’b00
9[5]
9[4]
82[5]
82[4]
1
9[3:2]
82[3:2]
2’b00
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