RTL8309N
Datasheet
Contents
1. GENERAL DESCRIPTION................................................................................................................................................0
2. FEATURES...........................................................................................................................................................................1
3. BLOCK DIAGRAM.............................................................................................................................................................3
4. PIN ASSIGNMENTS...........................................................................................................................................................4
4.1. PIN ASSIGNMENTS DIAGRAM .......................................................................................................................................4
4.2. PACKAGE IDENTIFICATION ...........................................................................................................................................5
4.3. PIN ASSIGNMENTS TABLE ............................................................................................................................................5
4.4. PIN DESCRIPTIONS .......................................................................................................................................................1
4.4.1. Media Connection Pins......................................................................................................................................1
4.4.2. Parallel LED Pins..............................................................................................................................................1
4.4.3. Miscellaneous Interface Pins.............................................................................................................................2
4.4.4. Configuration Strapping Pins............................................................................................................................2
4.4.5. Regulator Pins ...................................................................................................................................................3
4.4.6. Power and GND Pins ........................................................................................................................................4
5. PHYSICAL LAYER FUNCTION DESCRIPTION ..........................................................................................................4
5.1. MDI INTERFACE...........................................................................................................................................................4
5.2. 10BASE-T TRANSMIT FUNCTION..................................................................................................................................5
5.3. 10BASE-T RECEIVE FUNCTION ....................................................................................................................................5
5.4. 100BASE-TX TRANSMIT FUNCTION.............................................................................................................................5
5.5. 100BASE-TX RECEIVE FUNCTION ...............................................................................................................................5
5.6. 100BASE-FX FUNCTION ..............................................................................................................................................5
5.7. AUTO-NEGOTIATION FOR UTP FUNCTION....................................................................................................................6
5.8. CROSSOVER DETECTION AND AUTO CORRECTION FUNCTION......................................................................................6
5.9. POLARITY CORRECTION FUNCTION..............................................................................................................................6
5.10. IEEE 802.3AZ ENERGY EFFICIENT ETHERNET FUNCTION (EEE) .................................................................................6
5.11. LINK DOWN POWER SAVING FUNCTION.......................................................................................................................7
6. SWITCH CORE FUNCTION DESCRIPTION ................................................................................................................7
6.1. HARDWARE RESET AND SOFTWARE RESET FUNCTION .................................................................................................7
6.1.1. Hardware Reset .................................................................................................................................................7
6.1.2. Software Reset....................................................................................................................................................7
6.2. LAYER 2 LEARNING AND FORWARDING FUNCTION ......................................................................................................7
6.2.1. Forwarding........................................................................................................................................................8
6.2.2. Learning.............................................................................................................................................................8
6.2.3. Address Table Aging ..........................................................................................................................................8
6.2.4. Layer 2 Multicast...............................................................................................................................................8
6.3. MAC LIMIT FUNCTION ................................................................................................................................................8
6.4. RESERVED MULTICAST ADDRESS HANDLING FUNCTION .............................................................................................9
6.5. IEEE 802.3X FLOW CONTROL FUNCTION ....................................................................................................................9
6.6. HALF DUPLEX BACKPRESSURE FUNCTION.................................................................................................................10
6.6.1. Collision-Based Backpressure (Jam Mode).....................................................................................................10
6.6.2. Carrier-Based Backpressure (Defer Mode).....................................................................................................11
6.7. VLAN FUNCTION ......................................................................................................................................................11
6.7.1. Port-Based VLAN ............................................................................................................................................12
6.7.2. IEEE 802.1Q Tagged-VID Based VLAN..........................................................................................................12
6.7.3. Insert/Remove/Replace Tag..............................................................................................................................12
6.7.4. Ingress and Egress Rules .................................................................................................................................13
6.8. IEEE 802.1P REMARKING FUNCTION.........................................................................................................................13
6.9. BANDWIDTH CONTROL FUNCTION .............................................................................................................................14
6.9.1. Input Bandwidth Control .................................................................................................................................14
6.9.2. Output Bandwidth Control...............................................................................................................................14
6.10. QUALITY OF SERVICE (QOS) FUNCTION.....................................................................................................................14
6.10.1. Priority Arbitration..........................................................................................................................................14
6.10.2. Port-Based Priority Assignment......................................................................................................................15
6.10.3. IEEE 802.1Q-Based Priority Assignment........................................................................................................15
8-Port 10/100Mbps Ethernet Switch Controller iii Track ID: Rev. 1.0
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