zl50411 Zarlink Semiconductor, zl50411 Datasheet - Page 99

• Manufacturer Part Number: zl50411
• Description: Managed 9-port Fast Ethernet Switch With Private Vlan
• Manufacturer: Zarlink Semiconductor

12.3.6.18
I²C Address: h05B; CPU Address: h0542
Accessed by CPU and I²C (R/W)
Map TOS field in IP packet into eight level transmit priorities:
12.3.6.19
I²C Address: h05D; CPU Address: h0543
Accessed by CPU and I²C (R/W)
Map TOS into frame discard when low priority buffer usage is above threshold
12.3.6.20
I²C Address: h0B3+n; CPU Address: h0550+n
Accessed by CPU and I²C (R/W)
(Default 00) This register is duplicated eight times from PROTOCOL 0~7 and allows the CPU to define eight
separate protocols.
Bits [1:0]:
Bits [4:2]:
Bits [7:5]:
Bit [0]:
Bit [1]:
Bit [2]:
Bit [3]:
Bit [4]:
Bit [5]:
Bit [6]:
Bit [7]:
Bits [7:0]:
TOSPMH – TOS Priority Map
TOSDML – TOS Discard Map
USER_PROTOCOL_n – User Define Protocol 0~7
Priority when the TOS field is 5 (Default 0)
Priority when the TOS field is 6 (Default 0)
Priority when the TOS field is 7 (Default 0)
Frame drop precedence when TOS field is 0 (Default 0)
0 – Drop Precedence Level 0 (Lowest) (Default)
1 – Drop Precedence Level 1 (Highest)
Frame drop precedence when TOS field is 1 (Default 0)
Frame drop precedence when TOS field is 2 (Default 0)
Frame drop precedence when TOS field is 3 (Default 0)
Frame drop precedence when TOS field is 4 (Default 0)
Frame drop precedence when TOS field is 5 (Default 0)
Frame drop precedence when TOS field is 6 (Default 0)
Frame drop precedence when TOS field is 7 (Default 0)
User Define Protocol
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ZL50411
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Data Sheet