KS8993F A5 Micrel Inc, KS8993F A5 Datasheet - Page 75
KS8993F A5
Manufacturer Part Number
KS8993F A5
Description
Manufacturer
Micrel Inc
Datasheet
1.KS8993F_A5.pdf
(99 pages)
Specifications of KS8993F A5
Number Of Primary Switch Ports
3
Internal Memory Buffer Size
32
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 Supply Voltage (max)
1.89/3.465V
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Not Compliant
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KS8993F
4.4
The IPv4 TOS priority control registers implement a fully decoded 64 bit DSCP (Differentiated Services Code Point)
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.
Register 96 (0x60): TOS Priority Control Register 0
Register 97 (0x61): TOS Priority Control Register 1
Register 98 (0x62): TOS Priority Control Register 2
Register 99 (0x63): TOS Priority Control Register 3
Register 100 (0x64): TOS Priority Control Register 4
Register 101 (0x65): TOS Priority Control Register 5
Register 102 (0x66): TOS Priority Control Register 6
Register 103 (0x67): TOS Priority Control Register 7
August 26, 2004
Bit
7-0
Bit
7-0
Bit
7-0
Bit
7-0
Bit
7-0
Bit
7-0
Bit
7-0
Bit
7-0
Advanced Control Registers
Name
DSCP[63:56]
Name
DSCP[55:48]
Name
DSCP[47:40]
Name
DSCP[39:32]
Name
DSCP[31:24]
Name
DSCP[23:16]
Name
DSCP[15:8]
Name
DSCP[7:0]
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
R/W
R/W
Description
Description
Description
Description
Description
Description
Description
Description
- 75 -
Default
0000_0000
Default
0000_0000
Default
0000_0000
Default
0000_0000
Default
0000_0000
Default
0000_0000
Default
0000_0000
Default
0000_0000
Revision 1.0
Micrel
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