KSZ8873RLL Micrel Inc, KSZ8873RLL Datasheet - Page 4

• Manufacturer Part Number: KSZ8873RLL
• Description: IC ETHERNET SWITCH 3PORT 64-LQFP
• Manufacturer: Micrel Inc

Specifications of KSZ8873RLL

• Data Rate: 100Mbps
• Controller Type: Ethernet Switch Controller
• Interface: RMII
• Voltage - Supply: 1.8V, 2.5V, 3.3V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• No. Of Ports: 3
• Ethernet Type: IEEE 802.3u
• Supply Current: 115mA
• Supply Voltage Range: 2.5V, 3.3V
• Digital Ic Case Style: LQFP
• No. Of Pins: 64
• Svhc: No SVHC (15-Dec-2010)
• Base: RoHS Compliant
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 32
• Fiber Support: No
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII
• Power Supply Type: Analog/Digital
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Mounting: Surface Mount
• Jtag Support: No
• Operating Supply Voltage (max): 1.89/3.465V
• Operating Temperature Classification: Commercial
• Interface Type: MII, RMII
• Operating Temperature Range: 0°C To +70°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-3461

Micrel, Inc.
Contents
Pin Description and I/O Assignment ................................................................................................................................. 11
Pin Configuration ................................................................................................................................................................ 16
Functional Description ....................................................................................................................................................... 17
Functional Overview: Physical Layer Transceiver .......................................................................................................... 17
Functional Overview: Power Management....................................................................................................................... 22
Functional Overview: MAC and Switch ............................................................................................................................ 24
Advanced Switch Functions .............................................................................................................................................. 32
September 2009
100BASE-TX Transmit ..................................................................................................................................................... 17
100BASE-TX Receive ...................................................................................................................................................... 17
PLL Clock Synthesizer...................................................................................................................................................... 17
Scrambler/De-scrambler (100BASE-TX Only) ................................................................................................................. 17
100BASE-FX Operation.................................................................................................................................................... 17
100BASE-FX Signal Detection ......................................................................................................................................... 18
100BASE-FX Far-End Fault ............................................................................................................................................. 18
10BASE-T Transmit.......................................................................................................................................................... 18
10BASE-T Receive........................................................................................................................................................... 18
MDI/MDI-X Auto Crossover .............................................................................................................................................. 18
Auto-Negotiation ............................................................................................................................................................... 21
LinkMD
Normal Operation Mode..................................................................................................................................................... 23
Energy Detect Mode .......................................................................................................................................................... 23
Soft Power Down Mode ..................................................................................................................................................... 23
Power Saving Mode.......................................................................................................................................................... 23
Port based Power Down Mode ......................................................................................................................................... 23
Address Lookup................................................................................................................................................................ 24
Learning ............................................................................................................................................................................ 24
Migration ........................................................................................................................................................................... 24
Aging................................................................................................................................................................................. 24
Forwarding ........................................................................................................................................................................ 24
Switching Engine .............................................................................................................................................................. 27
MAC Operation ................................................................................................................................................................. 27
MII Interface Operation ..................................................................................................................................................... 28
Turbo MII Interface Operation........................................................................................................................................... 29
RMII Interface Operation .................................................................................................................................................. 29
MII Management (MIIM) Interface .................................................................................................................................... 31
Serial Management Interface (SMI).................................................................................................................................. 31
Bypass Mode .................................................................................................................................................................... 32
IEEE 802.1Q VLAN Support............................................................................................................................................. 32
QoS Priority Support......................................................................................................................................................... 33
Straight Cable ............................................................................................................................................................ 19
Crossover Cable ........................................................................................................................................................ 20
Access ....................................................................................................................................................................... 22
Usage......................................................................................................................................................................... 22
Inter Packet Gap (IPG) .............................................................................................................................................. 27
Back-Off Algorithm..................................................................................................................................................... 27
Late Collision ............................................................................................................................................................. 27
Illegal Frames ............................................................................................................................................................ 27
Full Duplex Flow Control............................................................................................................................................ 27
Half-Duplex Backpressure ......................................................................................................................................... 27
Broadcast Storm Protection....................................................................................................................................... 28
Port Individual MAC address and Source Port Filtering ............................................................................................ 28
Port-Based Priority..................................................................................................................................................... 33
802.1p-Based Priority ................................................................................................................................................ 33
DiffServ-Based Priority .............................................................................................................................................. 34
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Cable Diagnostics.............................................................................................................................................. 22
4
KSZ8873MLL/FLL/RLL
M9999-092309-1.2