参数资料
型号: IP178C-DS-R08
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: 35/93页
文件大小: 538K
代理商: IP178C-DS-R08
IP178C/IP178C LF/IP178CH/IP178CH LF
Datasheet
2.4
Copyright
2004, IC Plus Corp.
35/93
June 21, 2007
IP178Cx-DS-R12
Port base VLAN
IP178C/IP178CH
supports port base VLAN functions. It separates
IP178C/IP178CH
into some groups
(VLAN). A port is limited to communicate with other ports within the same group when the function is
enabled. Frames will be limited in a VLAN group and will not be forwarded out of this VLAN group. A port
can be assigned to one or more VLAN groups. The members (ports) of a VLAN group are assigned by
programming EEPROM register 64[7:0]~81[7:0], or MII register 31.0[8:0]~31.8[8:0].
The VLAN function can be active even if there is no EEPROM.
IP178C/IP178CH
supports an easy way
to enable a sub set VLAN function without programming registers. A default configuration of VLAN is
adopted if pin 79 VLAN_ON is pulled high. The VLAN duration is shown in the following table. The
setting in register takes precedence of the setting on pins.
VLAN_ON
EXTMII_EN
0
X
Function disabled
1
0
VLAN groups:
(P0, P7), (P1, P7), (P2, P7), (P3, P7),
(P4, P7), (P5, P7), (P6, P7)
1
1
VLAN groups:
(P0, MII), (P1, MII), (P2, MII), (P3, MII),
(P4, MII), (P5, MII), (P6, MII), (P7, MII)
Note: P0 means port 0. P7 means port7. MII means MII port.
Configuration
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