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Intel manual 6.1.2.2 100BASE-TX Scrambler and MLT-3 Encoder, GD82559ER - Networkin g Silicon

Models: GD82559ER

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GD82559ER — Networkin g Silicon

Table 3. 4B/5B Encoder

	Symbol	5B Symbol Code	4B Nibble Code

	E	11100	1110

	F	11101	1111

	I	11111	Inter Packet Idle Symbol
	I	11111	(No 4B)
			(No 4B)

	J	11000	1st Start of Packet Symbol
	J	11000	0101
			0101

	K	10001	2nd Start of Packet Symbol
	K	10001	0101
			0101

	T	01101	1st End of Packet Symbol

	R	00111	2nd End of Packet Symbol
	R	00111	and Flow Control
			and Flow Control

	V	00000	INVALID

	V	00001	INVALID

	V	00010	INVALID

	V	00011	INVALID

	H	00100	INVALID

	V	00101	INVALID

	V	00110	INVALID

	V	01000	INVALID

	V	01100	INVALID

	V	10000	PHY based Flow Control

	V	11001	INVALID

6.1.2.2100BASE-TX Scrambler and MLT-3 Encoder

Data is scrambled in 100BASE-TX to reduce electromagnetic emissions during long transmissions of high-frequency data codes. The scrambler logic accepts 5 bits from the 4B/5B encoder block and presents the scrambled data to the MLT-3 encoder. The PHY unit implements the 11-bit stream cipher scrambler as adopted by the ANSI XT3T9.5 committee for UTP operation. The cipher equation used is:

X[n] = X[n-11] + X[n-9] (mod 2)

The encoder receives the scrambled Non-Return to Zero (NRZ) data stream from the Scrambler and encodes the stream into MLT-3 for presentation to the driver. MLT-3 is similar to NRZI coding, but three levels are output instead of two. There are three output levels: positive, negative and zero. When an NRZ “0” arrives at the input of the encoder, the last output level is maintained (either positive, negative or zero). When an NRZ “1” arrives at the input of the encoder, the output steps to the next level. The order of steps is negative-zero-positive-zero which continues periodically.

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Datasheet

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Intel manual 6.1.2.2 100BASE-TX Scrambler and MLT-3 Encoder, GD82559ER - Networkin g Silicon, 4B/5B Encoder, Datasheet

Contents

Product Features DatasheetGD82559ER Fast Ethernet PCI Controller Networking SiliconDatasheet GD82559ER - Networking SiliconRevision History DateContents INTRODUCTIONDatasheet SIGNAL DESCRIPTIONSPCI CONFIGURATION REGISTERS CONTROL/STATUS REGISTERSDatasheet GD82559ER - Networking Silicon10. ELECTRICAL AND TIMING SPECIFICATIONS Networking Silicon - GD82559ERDatasheet 8.1.10Datasheet GD82559ER - Networking Silicon1. Introduction 1.1 GD82559ER Overview1.2 Suggested Reading DatasheetGD82559ER - Networkin g Silicon DatasheetFigure 1. 82559ER Block Diagram 2. GD82559ER Architectural Overview2.1 Parallel Subsystem Overview DatasheetGD82559ER - Networkin g Silicon 2.2 FIFO Subsystem OverviewDatasheet 2.3 10/100 Mbps Serial CSMA/CD Unit Overview 2.4 10/100 Mbps Physical Layer UnitDatasheet Networking Silicon - GD82559ERDatasheet GD82559ER - Networkin g Silicon3. Signal Descriptions 3.1 Signal Type Definitions3.2 PCI Bus Interface Signals 3.2.1 Address and Data SignalsGD82559ER - Networkin g Silicon 3.2.2 Interface Control SignalsDatasheet 3.3 Local Memory Interface Signals 3.2.3 System and Power Management SignalsDatasheet Flash Address15/EEPROM Data Output. During Flash accesses3.4 Testability Port Signals DatasheetFlash Address13/EEPROM Data Input. During Flash accesses GD82559ER - Networkin g Silicon3.5 PHY Signals DatasheetNetworking Silicon -GD82559ER Reference Bias Resistor 100 Mbps. This pin controls the outDatasheet GD82559ER - Networkin g Silicon4. GD82559ER Media Access Control Functional Description 4.1 82559ER Initialization4.1.1 Initialization Effects on 82559ER Units Datasheet4.2.1.1.1 Control/Status Register CSR Accesses 4.2 PCI Interface4.2.1 82559ER Bus Operations 4.2.1.1 82559ER Bus Slave OperationSYSTEM 82559ERFigure 2. CSR I/O Read Cycle Figure 3. CSR I/O Write Cycle4.2.1.1.2 Flash Buffer Accesses Figure 4. Flash Buffer Read CycleDatasheet GD82559ER - Networkin g Silicon4.2.1.1.3 Retry Premature Accesses Figure 5. Flash Buffer Write CycleDatasheet Networking Silicon - GD82559ER4.2.1.1.4 Error Handling 4.2.1.2 82559ER Bus Master Operation82559ER SYSTEM Figure 6. PCI Retry CycleFigure 7. Memory Read Burst Cycle Figure 8. Memory Write Burst CycleDatasheet Networking Silicon - GD82559ERGD82559ER - Networkin g Silicon 4.2.1.2.1 Memory Write and InvalidateDatasheet Networking Silicon - GD82559ER 4.2.1.2.2 Read AlignDatasheet 4.2.2 Clockrun Signal 4.2.3 Power Management Event Signal4.2.1.2.3 Error Handling Datasheet4.2.4 Power States 4.2.4.1 D0 Power State4.2.4.2 D1 Power State 4.2.4.3 D2 Power State4.2.4.4 D3 Power State 4.2.4.5 Understanding Power RequirementsDatasheet Power State4.2.4.6 Auxiliary Power Signal 4.2.4.7 Alternate Reset Signal4.2.4.7.1 Isolate Signal Datasheet4.2.4.7.2 PCI Reset Signal Figure 9. Isolate Signal Behavior to PCI Power Good SignalDatasheet GD82559ER - Networkin g Silicon4.2.5 Wake-up Events 4.2.5.1 “Interestin g” Packet EventsFigure 10. 82559ER Initialization upon PCI RST# and ISOLATE# Datasheet4.3 Parallel Flash Interface 4.4 Serial EEPROM Interface4.2.5.2 Link Status Change Event DatasheetFigure 11. 64 Word EEPROM Read Instruction Waveform Figure 12. 82559ER EEPROM FormatDatasheet Networking Silicon - GD82559ER4.5 10/100 Mbps CSMA/CD Unit Table 1. EEPROM Words Field DescriptionsDatasheet Word4.5.1 Full Duplex 4.5.2 Flow Control4.5.3 Address Filtering Modifications 4.5.4 Long Frame ReceptionGD82559ER - Networkin g Silicon 4.6 Media Independent Interface MII Management InterfaceDatasheet 5. GD82559ER Test Port Functionality 5.1 Introduction5.2 Asynchronous Test Mode 5.3 Test Function Description5.5 TriState 5.6 Nand - TreeTable 2. Nand - Tree Chains DatasheetDatasheet Networking Silicon - GD82559ERTable 2. Nand - Tree Chains FLA0Datasheet GD82559ER - Networkin g Silicon6. GD82559ER Physical Layer Functional Description 6.1 100BASE-TX PHY Unit6.1.1 100BASE-TX Transmit Clock Generation 6.1.2 100BASE-TX Transmit Blocks6.1.2.2 100BASE-TX Scrambler and MLT-3 Encoder DatasheetGD82559ER - Networkin g Silicon Table 3. 4B/5B EncoderFigure 13. NRZ to MLT-3 Encoding Diagram 6.1.2.3 100BASE-TX Transmit Framing6.1.2.4 Transmit Driver Figure 14. Conceptual Transmit Differential Waveform6.1.3.2 Receive Clock and Data Recovery 6.1.3.5 100BASE-TX Receive Error Detection and Reporting6.1.3 100BASE-TX Receive Blocks 6.1.3.1 Adaptive Equalizer6.1.5 100BASE-TX Link Integrity and Auto-Negotiation Solution 6.2 10BASE-T Functionality6.1.4 100BASE-TX Collision Detection 6.1.6 Auto 10/100 Mbps Speed Selection6.2.2 10BASE-T Transmit Blocks 6.2.3 10BASE-T Receive Blocks6.2.2.1 10BASE-T Manchester Encoder 6.2.2.2 10BASE-T Driver and Filter6.2.3.3 10BASE-T Error Detection and Reporting 6.3 Auto-Negotiation Functionality6.2.4 10BASE-T Collision Detection 6.2.5 10BASE-T Link Integrity6.3.1 Description 6.3.2 Parallel Detect and Auto-NegotiationDatasheet GD82559ER - Networkin g Silicon6.4 LED Description Figure 15. Auto-Negotiation and Parallel DetectDatasheet Networking Silicon - GD82559ERFigure 16. Two and Three LED Schematic Diagram DatasheetGD82559ER - Networkin g Silicon LILED7. PCI Configuration Registers 7.1 LAN Ethernet PCI Configuration SpaceFigure 17. PCI Configuration Registers 7.1.1 PCI Vendor ID and Device ID Registers7.1.2 PCI Command Register SERR# Enable Parity Error Response Memory Write and Invalidate EnableBus Master Enable Memory Space IO space Figure 18. PCI Command Register7.1.3 PCI Status Register 1 0Figure 19. PCI Status Register Table 6. PCI Status Register Bits7.1.4 PCI Revision ID Register 7.1.5 PCI Class Code Register7.1.6 PCI Cache Line Size Register Figure 20. Cache Line Size Register7.1.7 PCI Latency Timer 7.1.8 PCI Header Type7.1.9 PCI Base Address Registers Figure 21. Base Address Register for Memory Mapping7.1.9.1 CSR Memory Mapped Base Address Register 7.1.9.2 CSR I/O Mapped Base Address Register7.1.9.3 Flash Memory Mapped Base Address Register 7.1.9.4 Expansion ROM Base Address Register7.1.10 PCI Subsystem Vendor ID and Subsystem ID Registers 7.1.11 Capability Pointer7.1.12 Interrupt Line Register Table 7. 82559ER ID Fields Programming7.1.18 Power Management Capabilities Register Table 8. Power Management Capability Register7.1.13 Interrupt Pin Register 7.1.14 Minimum Grant Register7.1.19 Power Management Control/Status Register PMCSR Table 9. Power Management Control and Status RegisterTable 8. Power Management Capability Register Datasheet7.1.20 Data Register Table 10. Ethernet Data RegisterDatasheet GD82559ER - Networkin g SiliconSCB Status Word SCB Command Word SCB General Pointer PORT Interface 8. Control/Status Registers8.1 LAN Ethernet Control/Status Registers Figure 23. 82559ER Control/Status Register8.1.1 System Control Block Status Word Receive DMA Byte Count Flow Control Register PMDRDatasheet GD82559ER - Networking Silicon8.1.2 System Control Block Command Word 8.1.3 System Control Block General Pointer8.1.4 PORT 8.1.5 Flash Control Register8.1.8 Receive Direct Memory Access Byte Count 8.1.11 Power Management Driver RegisterTable 11. Power Management Driver Register 8.1.9 Early Receive Interrupt8.1.12 General Control Register 8.1.13 General Status RegisterTable 12. General Control Register Table 13. General Status Register8.2 Statistical Counters Table 14. 82559ER Statistical CountersDatasheet GD82559ER - Networking SiliconDatasheet Table 14. 82559ER Statistical Countersfollow the first are also lost however, because there is no lost frames. These frames are valid MAC control frames that haveDatasheet GD82559ER - Networking Silicon9. PHY Unit Registers 9.1 MDI Registers 09.1.1 Register 0 Control Register Bit Definitions Datasheet9.1.2 Register 1 Status Register Bit Definitions DatasheetGD82559ER - Networking Silicon This bit restarts the Auto-Negotiation process and is self9.1.3 Register 2 PHY Identifier Register Bit Definitions 9.1.4 Register 3 PHY Identifier Register Bit DefinitionsDatasheet Networking Silicon - GD82559ER9.2 MDI Registers 8 9.3 MDI Register 169.1.7 Register 6 Auto-Negotiation Expansion Register Bit Definitions DatasheetNetworking Silicon - GD82559ER 9.3.2 Register 17 PHY Unit Special Control Bit DefinitionsDatasheet Register 21 100BASE-TX Receive Error Frame Counter Bit 9.3.7 Register 22 Receive Symbol Error Counter Bit Definitions9.3.3 Register 18 PHY Address Register 9.3.5Register 23 100BASE-TX Receive Premature End of Frame Error Register 24 10BASE-T Receive End of Frame Error Counter Bit9.3.8 Counter Bit DefinitionsDatasheet GD82559ER - Networking Silicon10. Electrical and Timing Specifications 10.2 DC SpecificationsTable 15. General DC Specifications Table 16. PCI Interface DC SpecificationsTable 17. Flash/EEPROM Interface DC Specifications Table 18. LED Voltage/Current CharacteristicsTable 19. 100BASE-TX Voltage/Current Characteristics Table 16. PCI Interface DC SpecificationsTable 20. 10BASE-T Voltage/Current Characteristics Figure 24. RBIAS100 Resistance Versus Transmitter CurrentTable 19. 100BASE-TX Voltage/Current Characteristics Datasheet10.3 AC Specifications Table 21. AC Specifications for PCI SignalingFigure 25. RBIAS10 Resistance Versus Transmitter Current Datasheet10.4 Timing Specifications 10.4.1 Clocks Specifications10.4.1.1 PCI Clock Specifications 10.4.1.2 X1 Specifications10.4.2 Timing Parameters 10.4.2.1 Measurement and Test ConditionsFigure 27. Output Timing Measurement Conditions Figure 28. Input Timing Measurement Conditions10.4.2.2 PCI Timings 10.4.2.3 Flash Interface TimingsTable 25. PCI Timing Parameters DatasheetGD82559ER - Networking Silicon Table 26. Flash Timing ParametersDatasheet 10.4.2.4 EEPROM Interface Timings Figure 29. Flash Timings for a Read CycleTable 27. EEPROM Timing Parameters Datasheet10.4.2.5 PHY Timings Figure 30. EEPROM TimingsTable 28. 10BASE-T NLP Timing Parameters Figure 31. 10BASE-T NLP TimingsTable 30. 100Base-TX Transmitter AC Specification Figure 32. Auto-Negotiation FLP TimingsDatasheet Networking Silicon - GD82559ERDatasheet GD82559ER - Networking SiliconFigure 24. Dimension Diagram for the GD82559ER 196-Pin BGA 12. Package and Pinout Information12.1 Package Information Datasheet12.2 Pinout Information 12.2.1 GD82559ER Pin AssignmentsTable 15. GD82559ER Pin Assignments DatasheetTable 15. GD82559ER Pin Assignments DatasheetNetworking Silicon - GD82559ER 12.2.2 GD82559ER Ball Grid Array Diagram Figure 25. GD82559ER Ball Grid Array DiagramDatasheet GD82559ER - Networking Silicon