- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383110 > IP178CH (Electronic Theatre Controls, Inc.) 8 Port 10/100 Ethernet Integrated Switch PDF資料下載
參數(shù)資料
| 型號： | IP178CH |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 8 Port 10/100 Ethernet Integrated Switch |
| 中文描述： | 8端口10/100以太網(wǎng)集成開關 |
| 文件頁數(shù)： | 40/91頁 |
| 文件大?。?/td> | 1244K |
| 代理商： | IP178CH |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁當前第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁
IP178C
Preliminary Data Sheet
2.9
CoS
IP178C supports two type of CoS. One is port base priority function and the other is frame base priority
function. IP178C supports two levels of priority queues. A high priority packet will be queued to the high
priority queue to share more bandwidth. The ratio of bandwidth of high priority and low priority queue is
defined in MII register 30.1[15] or EEPROM 3[7].
2.9.1
Port base priority
The packets received from high priority port will be handled as high priority frames if the port base priority
is enabled. It is enabled by programming the corresponding bit in MII register 31.0[9]~31.8[9] or
EEPROM register 65[1] ~81[1]. Each port of IP178C can be configured as a high priority port individually.
2.9.2
Frame base priority
VLAN tag and TCP/IP TOS
IP178C examines the specific bits of VLAN tag and TCP/IP TOS for priority frames if the frame base
priority is enabled. The packets will be handled as high priority frames if the tag value meets the high
priority requirement, that is, VLAN tag bigger than 3 or TCP/IP TOS field not equal to 3’b000. It is
enabled by programming the corresponding bit in MII register 31.0[10]~31.8[10] or EEPROM register
65[2]~81[2]. The frame base priority function of each port can be enabled individually.
IP178C supports an easy way to enable a sub set of CoS function without programming EEPROM or MII
registers. Port 6 and port 7 can be set as high priority ports if pin 100 P6_7_HIGH is pulled high. Frame
base priority function of all ports is enabled if pin 99 COS_EN is pulled high. The setting in register takes
precedence of the setting on pins.
byte
TYPE = 8100
VLAN field
TCI (tag control information)
12~13
14~15
TCI definition:
Bit[15:13]: User Priority 7~0
Bit 12: Canonical Format Indicator (CFI)
Bit[11~0]: VLAN ID.
IP178C uses bit[15:13] to define priority.
byte
TYPE = 0800
TOS field
IP HEADER
12~13
14~15
IP header definition:
Byte 14
Bit[7:0]: IP protocol version number & header length.
Byte 15: Service type
Bit[7~5]: IP Priority (Precedence ) from 7~0
Bit 4: No Delay (D)
Bit 3: High Throughput
Bit 2: High Reliability (R)
Bit[1:0]: Reserved
IP178C uses bit[4:2] to define priority.
Copyright
2004, IC Plus Corp.
40/91
October 27, 2005
IP178C-DS-R09
相關PDF資料 |
PDF描述 |
|---|---|
| IP178CHLF | 8 Port 10/100 Ethernet Integrated Switch |
| IP178CLF | 8 Port 10/100 Ethernet Integrated Switch |
| IP82C237 | CMOS High Performance Programmable DMA Controller |
| IP82C237-12 | CMOS High Performance Programmable DMA Controller |
| IP82C54-10Z | CMOS Programmable Intervel Timer |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| IP178CHLF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8 Port 10/100 Ethernet Integrated Switch |
| IP178CLF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8 Port 10/100 Ethernet Integrated Switch |
| IP17IA99-A1 | 制造商:AIS 功能描述:17" INDUSTRIAL PANEL PC W/STAINLESS STEEL BEZEL - Bulk |
| IP17IA99-A1-S | 制造商:AIS 功能描述:17- PANEL PC WITH STAINLESS STEEL FRONT, INTEL ATOM 1.66 GHZ - Bulk |
| IP17IC7T-M1 | 制造商:AIS 功能描述:- Trays |
發(fā)布緊急采購，3分鐘左右您將得到回復。