KS8995XA B3 Micrel Inc, KS8995XA B3 Datasheet - Page 43

• Manufacturer Part Number: KS8995XA B3
• Manufacturer: Micrel Inc

Specifications of KS8995XA B3

• Number Of Primary Switch Ports: 5
• Internal Memory Buffer Size: 64
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII/SNI
• Power Supply Type: Analog/Digital
• Package Type: PQFP
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

September 2008
Advanced Control Registers
The IPv4 TOS priority control registers implement a fully decoded 64 bit differentiated services code point (DSCP)
register used to determine priority from the 6 bit TOS field in the IP header. The most significant 6 bits of the TOS
field are fully decoded into 64 possibilities, and the singular code that results is compared against the corresponding
bit in the DSCP register. If the register bit is a 1, the priority is high; if it is a 0, the priority is low.
Registers 104 to 109 define the switching engine’s MAC address. This 48-bit address is used as the source address in MAC pause control frames.
Address
Register 96 (0x60): TOS Priority Control Register 0
7-0
Register 97 (0x61): TOS Priority Control Register 1
7-0
Register 98 (0x62): TOS Priority Control Register 2
7-0
Register 99 (0x63): TOS Priority Control Register 3
7-0
Register 100 (0x64): TOS Priority Control Register 4
7-0
Register 101 (0x65): TOS Priority Control Register 5
7-0
Register 102 (0x66): TOS Priority Control Register 6
7-0
Register 103 (0x67): TOS Priority Control Register 7
7-0
Register 104 (0x68): MAC Address Register 0
7-0
Register 105 (0x69): MAC Address Register 1
7-0
Register 106 (0x6A): MAC Address Register 2
7-0
Register 107 (0x6B): MAC Address Register 3
7-0
Register 108 (0x6C): MAC Address Register 4
7-0
Register 109 (0X6D): MAC Address Register 5
7-0
Name
DSCP[55:48]
DSCP[47:40]
DSCP[39:32]
DSCP[31:24]
DSCP[23:16]
DSCP[15:8]
DSCP[7:0]
MACA[47:40]
MACA[39:32]
MACA[31:24]
MACA[23:16]
MACA[15:8]
MACA[7:0]
DSCP[63:56]
Description
43
Mode
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
M9999-091508
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
Default
0xA1
0x00
0x10
0xff
0xff
0xff