Datasheet
2016-2017 Microchip Technology Inc. DS00002112B-page 79
KSZ8795CLX
Note 4-1 In the port priority 0 - 3 ingress rate limit mode, it is necessary to set all related egress ports to two
queues or four queues mode.
In the port queue 0 - 3 egress rate limit mode, the highest priority get exact rate limit based on the
rate select table, other priorities packets rate are based upon the ratio of the Port Control 14/15/16/
17 Registers when using more than one egress queue per port.
7 Reserved — RO 0
6 - 0 Port Queue 2
Egress Limit
Egress Data Rate Limit For Priority 2 Frames
Egress traffic from this port is shaped according to
the Table 18 in “Rate Limiting Support” sub-section.
In four queues mode, it is high/low priority.
R/W 0000000
Register 190 (0xBE): Port 1 Queue 3 Egress Limit Control 4
Register 206 (0xCE): Port 2 Queue 3 Egress Limit Control 4
Register 222 (0xDE): Port 3 Queue 3 Egress Limit Control 4
Register 238 (0xEE): Port 4 Queue 3 Egress Limit Control 4
Register 254 (0xFE): Port 5 Queue 3 Egress Limit Control 4
7 Reserved — RO 0
6 - 0 Port Queue 3
Egress Limit
Egress Data Rate Limit For Priority 3 Frames
Egress traffic from this port is shaped according to
the Table 18 in “Rate Limiting Support” sub-section.
In four queues mode, it is highest priority.
R/W 0000000
TABLE 4-14: ADVANCED CONTROL REGISTERS 191 - 255
Address Name Description Mode Default
Register 191 (0xBF): Testing Register
7 - 0 Reserved N/A Don’t Change. RO 0x80
Register 207 (0xCF): Reserved Control Register
7 - 0 Reserved N/A Don’t Change. RO 0x15
Register 223 (0xDF): Test Register 2
7 - 0 Reserved N/A Don’t Change. RO 0x0C
Register 239 (0xEF): Test Register 3
7 - 0 Reserved N/A Don’t Change. RO 0x32
Register 255 (0xFF): Testing Register 4
7 - 0 Reserved N/A Don’t Change. RO 0x00
TABLE 4-15: INDIRECT REGISTER DESCRIPTIONS
Control Indirect Address Contents
Direct Address 0x6E,
Function Select Bits[7-5] = 000,
Table_select Bits[3-2] = 00
0x000 – 0x01F Static MAC address table entry 0 – 31
Direct Address 0x6E,
Function Select Bits[7-5] = 000,
Table_select Bits[3-2] = 01
0x000 – 0x1FF VLAN table bucket 0 – 1023 (4 entries
per bucket)
Direct Address 0x6E,
Function Select Bits[7-5] = 000,
Table_select Bits[3-2] = 10
0x000 – 0x1FF Dynamic MAC address table entry 0 –
1023
TABLE 4-13: ADDITIONAL ADVANCED CONTROL REGISTERS (Note 4-1) (CONTINUED)
Address Name Description Mode Default