KSZ8842-PMQL Micrel Inc, KSZ8842-PMQL Datasheet - Page 59
![2-Port Ethernet Switch/Repeater + 32-bit/33MHz PCI Bus Interface( )](/photos/6/81/68152/576-128-pqfp_sml.jpg)
KSZ8842-PMQL
Manufacturer Part Number
KSZ8842-PMQL
Description
2-Port Ethernet Switch/Repeater + 32-bit/33MHz PCI Bus Interface( )
Manufacturer
Micrel Inc
Specifications of KSZ8842-PMQL
Controller Type
Ethernet Switch Controller
Interface
PCI
Voltage - Supply
3.1 V ~ 3.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
128-MQFP, 128-PQFP
Number Of Primary Switch Ports
2
Internal Memory Buffer Size
32
Operating Supply Voltage (typ)
3.3V
Fiber Support
Yes
Integrated Led Drivers
Yes
Phy/transceiver Interface
MII
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)
3.5V
Operating Supply Voltage (min)
3.1V
Operating Temperature Classification
Commercial
Data Rate
100Mbps
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
576-1636 - BOARD EVALUATION KSZ8842-PMQL
Current - Supply
-
Lead Free Status / RoHS Status
Compliant, Lead free / RoHS Compliant
Other names
576-1513-5
KSZ8842-PMQL
KSZ8842-PMQL
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
KSZ8842-PMQLI
Manufacturer:
TI
Quantity:
3 100
Micrel, Inc.
Priority Control Register 1 (Offset 0x0480): TOSR1
This register contains the TOS priority control for the switch function.
The IPv4/Ipv6 TOS priority control registers implement a fully decoded 64 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 bits in
the DSCP register to determine the priority.
TOS Priority Control Register 2 (Offset 0x482): TOSR2
This register contains the TOS priority control for the switch function.
October 2007
15:14
13:12
11:10
15:14
13:12
11:10
Bit
9:8
7:6
5:4
3:2
1:0
Bit
9:8
7:6
Default
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description
DSCP[15:14]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x1C.
DSCP[13:12]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x18.
DSCP[11:10]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x14.
DSCP[9:8]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x10.
DSCP[7:6]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x0C.
DSCP[5:4]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x08.
DSCP[3:2]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x04.
DSCP[1:0]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x00.
Description
DSCP[31:30]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x3C.
DSCP[29:28]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x38.
DSCP[27:26]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x34.
DSCP[25:24]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x30.
DSCP[23:22]
The value in this field is used as the frame’s priority when bits [7:2] of it IP
TOS/DiffServ/Traffic Class value is 0x2C.
59
KSZ8842-PMQL/PMBL
M9999-100207-1.5