KSZ8842-16MQL Micrel Inc, KSZ8842-16MQL Datasheet - Page 106

• Manufacturer Part Number: KSZ8842-16MQL
• Description: IC SWITCH 10/100 16BIT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8842-16MQL

• Data Rate: 100Mbps
• 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
• No. Of Ports: 1
• Ethernet Type: IEEE 802.3u
• Supply Current: 122mA
• Supply Voltage Range: 3.1V To 3.5V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: QFP
• No. Of: RoHS Compliant
• 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
• Interface Type: PCI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1634 - BOARD EVALUATION KSZ8842-16MQL
• Current - Supply: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-1478-5

Dynamic MAC Address Table
The Dynamic MAC address is a read only table.
Dynamic MAC Address Lookup Example:
Micrel Confidential
Bit
71
70-67
66
65-56
55-54
53-52
51-48
47-0
November 2005
Dynamic MAC Address Table Read (read the first entry at indirect address offset 0 and retrieve the MAC
table size)
Default Value
1
0x000
00
0x0
0x0000_0000_0000
Then
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
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.
106
KSZ8842-16/32 MQL/MVL
Rev. 1.4