ZL50400GDC ZARLINK [Zarlink Semiconductor Inc], ZL50400GDC Datasheet - Page 80
ZL50400GDC
Manufacturer Part Number
ZL50400GDC
Description
Lightly Managed/Unmanaged 9-Port 10/100 M Ethernet Switch
Manufacturer
ZARLINK [Zarlink Semiconductor Inc]
Datasheet
1.ZL50400GDC.pdf
(124 pages)
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12.3.6
12.3.6.1
I²C Address h04B; CPU Address:h500
Accessed by CPU and I
(Group 5 Address) Buffer Control/QOS Group
Bit [0]:
Bit [1]:
Bits [4:2]:
Bit [5]:
Bit [6]:
Bit [7]:
Bit [2]:
Bit [3]:
Bit [4]:
Bit [5]
Bit [6]:
Bit [7]:
QOSC – QOS Control
2
C (R/W)
Delete MAC report control
0 – Report MAC address deletion (MAC address is deleted from MCT after
aging time) (Default)
1 – Disable report MAC address deletion
Delete Control
0 – MAC address entry is removed when it is old enough to be aged (Default)
1 – Disable aging logic from removing MAC during aging
However, a report is still sent to the CPU in both cases, when bit [2] = 0
Reserved. Must be 0.
ARP report control
0 - No ARP packet reporting (Default)
1 - Report ARP packet to CPU
Disable MCT speed-up aging
0 – Enable speed-up aging when MCT resource is low. (Default)
1 – Disable speed-up aging when MCT resource is low.
Slow Learning
0 – Learning is performed independent of search demand (Default)
1 – Enable slow learning. Learning is temporary disabled when search
demand is high
Enable TX rate control (on RMAC ports only)
0 – Disable (Default)
1 – Enable
Enable RX rate control (on RMAC ports only)
0 – Disable (Default)
1 – Enable
Reserved
Select VLAN tag or TOS (IP packets) to be preferentially picked to map
transmit priority and drop priority
0 – Select VLAN Tag priority field over TOS (Default)
1 – Select TOS over VLAN tag priority field
Select TOS bits for Priority
0 – Use TOS [4:2] bits to map the transmit priority (Default)
1 – Use TOS [7:5] bits to map the transmit priority
Select TOS bits for Drop priority
0 – Use TOS [4:2] bits to map the drop priority (Default)
1 – Use TOS [7:5] bits to map the drop priority
Zarlink Semiconductor Inc.
ZL50400
80
Data Sheet
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