KSZ8842-PMQL Micrel Inc, KSZ8842-PMQL Datasheet - Page 53
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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.
Switch Global Control Register 1 (Offset 0x0402): SGCR1
This register contains the global control for the switch function.
October 2007
6 – 4
Bit
15
14
13
12
11
10
9
8
3
3
2
1
0
Default
0x4
0x0
0
0
1
1
1
1
0
0
1
1
0
0
R/Write
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description
Pass all frames
1 = switch all packets including bad ones. Used solely for debugging
purposes. Works in conjunction with Sniffer mode only.
Reserved.
For factory test purposes only. Always write 0.
IEEE 802.3x Transmit direction flow control enable
1 = will enable transmit direction flow control feature.
0 = will not enable transmit direction flow control feature. Switch will not
generate any flow control packets.
IEEE 802.3x Receive direction flow control enable
1 = will enable receive direction flow control feature.
0 = will not enable receive direction flow control feature. Switch will not
react to any received flow control packets.
Frame Length field check
1 = will check frame length field in the IEEE packets. If the actual length
does not match, the packet will be dropped (for Length/Type field < 1500).
Aging enable
1 = enable age function in the chip
0 = disable age function in the chip
Fast age enable
1 = turn on fast age (800µs)
Aggressive back off enable
1 = enable more aggressive back off algorithm in half duplex mode to
enhance performance. This is not an IEEE standard.
Reserved
Reserved
Pass flow control packet
1 = switch will not filter 802.1x “flow control” packets.
Reserved
Reserved
Link change age
1 = link change from “link” to “no link” will cause fast aging (<800µs) to
age address table faster. After an age cycle is complete, the age logic will
return to normal (300 + 75 seconds).
Note: If any port is unplugged, all addresses will be automatically aged
out.
53
KSZ8842-PMQL/PMBL
M9999-100207-1.5