KS8842-16MQL Micrel Inc, KS8842-16MQL Datasheet - Page 120
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KS8842-16MQL
Manufacturer Part Number
KS8842-16MQL
Description
IC SWITCH 10/100 16BIT 128PQFP
Manufacturer
Micrel Inc
Specifications of KS8842-16MQL
Applications
*
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
KS8842-PMQL-EVAL - EVAL KIT EXPERIMENTAL KS8842KS8842-16MQL-EVAL - EVAL KIT EXPERIMENTAL KS8842
Lead Free Status / RoHS Status
Not Compliant, Lead free / RoHS Compliant
Other names
576-1458
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Dynamic MAC Address Table
The Dynamic MAC address is a read only table.
Dynamic MAC Address Lookup Example:
Micrel, Inc.
Bit
71
70-67
66
65-56
55-54
53-52
51-48
47-0
October 2007
Dynamic MAC Address Table Read (read the first entry at indirect address offset 0 and retrieve the MAC
table size)
Then
Default Value
1
00
0x0000_0000_
0000
0x000
0x0
Write to reg. IACR with 0x1800 (set indirect address and trigger a read dynamic MAC table operation)
Read reg. IADR1 (dynamic MAC table bits 71-64) // If bit 71 = 1, restart (reread) from this register
Read reg. IADR3 (dynamic MAC table bits 63-48)
Read reg. IADR2 (dynamic MAC table bits 47-32)
Read reg. IADR5 (dynamic MAC table bits 31-16)
Read reg. IADR4 (dynamic MAC table bits 15-0)
R/W
RO
RO
RO
RO
RO
RO
RO
RO
Table 19. Dynamic MAC Address Table Format (1024 Entries)
Description
Data not ready
1: specifies that the entry is not ready, continue retrying until bit is set to 0
0: specifies that the entry is ready
Reserved
MAC empty
1: specifies that there is no valid entry in the table
0: specifies that there are valid entries in the table
No of valid entries
Indicates how many valid entries in the table
0x3ff means 1 K entries
0x001 means 2 entries
0x000 and bit 66 = 0 means 1 entry
0x000 and bit 66 = 1 means 0 entry
Time Stamp
Specifies the 2-bit counter for internal aging.
Source port
Identifies the source port where FID+MAC is learned:
00: port 1
01: port 2
10: port 3
FID
Specifies the filter ID.
MAC Address
Specifies the 48-bit MAC address.
120
KSZ8842-16/32 MQL/MVL/MVLI/MBL
M9999-102207-1.9