参数资料
型号: ZL50408GDG2
厂商: CONEXANT SYSTEMS
元件分类: 网络接口
英文描述: DATACOM, LAN SWITCHING CIRCUIT, PBGA208
封装: 17 X 17 MM, 1.40 MM HEIGHT, LEAD FREE, MO-192, LBGA-208
文件页数: 144/144页
文件大小: 1779K
代理商: ZL50408GDG2
ZL50408
Data Sheet
99
Zarlink Semiconductor Inc.
12.3.6.17
TOSPMM – TOS Priority Map
IC Address: h05A; CPU Address: h0541
Accessed by CPU and IC (R/W)
Map TOS field in IP packet into eight level transmit priorities
12.3.6.18
TOSPMH – TOS Priority Map
IC Address: h05B; CPU Address: h0542
Accessed by CPU and IC (R/W)
Map TOS field in IP packet into eight level transmit priorities:
12.3.6.19
TOSDML – TOS Discard Map
IC Address: h05D; CPU Address: h0543
Accessed by CPU and IC (R/W)
Map TOS into frame discard when low priority buffer usage is above threshold
Bits [5:3]:
Priority when the TOS field is 1 (Default 0)
Bits [7:6]:
Priority when the TOS field is 2 (Default 0)
Bit [0]:
Priority when the TOS field is 2 (Default 0)
Bits [3:1]:
Priority when the TOS field is 3 (Default 0)
Bits [6:4]:
Priority when the TOS field is 4 (Default 0)
Bit [7]:
Priority when the TOS field is 5 (Default 0)
Bits [1:0]:
Priority when the TOS field is 5 (Default 0)
Bits [4:2]:
Priority when the TOS field is 6 (Default 0)
Bits [7:5]:
Priority when the TOS field is 7 (Default 0)
Bit [0]:
Frame drop precedence when TOS field is 0 (Default 0)
0 – Drop Precedence Level 0 (Lowest) (Default)
1 – Drop Precedence Level 1 (Highest)
Bit [1]:
Frame drop precedence when TOS field is 1 (Default 0)
Bit [2]:
Frame drop precedence when TOS field is 2 (Default 0)
Bit [3]:
Frame drop precedence when TOS field is 3 (Default 0)
Bit [4]:
Frame drop precedence when TOS field is 4 (Default 0)
Bit [5]:
Frame drop precedence when TOS field is 5 (Default 0)
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