Texas Instruments TNETE100A, TNETE110A, TNETE211 7.4 PHY Initialization

PHY Initialization

7-9

Physical Interface (PHY)

7.4 PHY Initialization

The driver initializes each MII-attached PHY. Since there may be more than

one PHY attached to the MII, proper initialization ensures that one and only

one PHY is active and driving the MII. (The condition where more than one

PHY drives the MII at the same time is termed contention.)

Each MII-equipped PHY device has a control register at offset 0x00h. In

ThunderLAN, this register is called GEN_ctl. The effect of asserting the isolate

bit in this register is that the PHY does not drive any wire, port, or magnetics

it is connected to, and it Hi-Zs the interface to the MII data bus. The PHY still

pays attention and responds to requests from the MII management interface,

consisting of the MDIO/MDCLK lines.

Nominal treatment of the attached PHY requires 32 clock cycles be applied to

the PHY to synchronize the serial management interfaces. This is required on

each access, unless it responds to a fast start delimiter. If a PHY has this fea-

ture, synchronization is only required on the first access. The clock cycles are

generated through the NetSio register.

Contents

Main Page Page Page Running TitleAttribute Reference Preface Read This First ThunderLAN Programmers Guide About This Manual How to Use This Manual Notational Conventions Related Documentation If You Need Assistance/ Trademarks v Read This First If You Need Assistance. .. World-Wide Web Sites North America, South America, Central America Europe, Middle East, Africa Asia-Pacific Page Contents Page Page Page Figures Tables Page Page ThunderLAN Overview Chapter 1 1.1 ThunderLAN Architecture Figure 11. The ThunderLAN Controller PCI Local Bus Specification, 1.2 Networking Protocols 1.3 PCI Interface 1.3.1 PCI Cycles 1.3.2 Byte Ordering Figure 12. PCI Bus Byte Assignment Page ThunderLAN Registers Chapter 2 2.1 Register Addresses Figure 21. How ThunderLAN Registers are Addressed Page PCI Configuration Space 2.2 PCI Configuration Space Figure 22. The PCI Configuration Space Registers PCI Local Bus Specification. PCI Local Bus Spec- ification, PCI Local Bus Specification, Figure 23. Configuration EEPROM Data Format Page Page Page 2.3 Host Registers Figure 24. Host Registers Page Internal Registers ThunderLAN Registers 2.4 Internal Registers Figure 25. Internal Registers , Page Page 2.5 MII PHY Registers Figure 26. MII PHY Registers , Page Page Page Page Page to NetSio. Then the clock is cycled for each bit. The loop effectively cycles five times. To get an idle bit, turn off the data driver, then cycle the clock. Page Page 2.6 External Devices 2.6.1 BIOS ROM 2.6.2 LEDs 2.6.3 EEPROM Page Page Page 2.6.4 ThunderLAN EEPROM Map Table 21. ThunderLAN EEPROM Map Page Page Page Page Initializing and Resetting Chapter 3 3.1 Initializing 3.1.1 Finding the Network Interface Card (NIC) Page 3.1.2 Finding the Controller in Memory and I/O Space 3.1.3 Finding Which Interrupt was Assigned PCI Local Bus Specification 3.1.4 Turning on the I/O Port and Memory Address Decode PCI Local Bus Specification. 3.1.5 Recovering the Silicon Revision Value 3.1.6 Setting the PCI Bus Latency Timer 3.2 Resetting 3.2.1 Hardware Reset 3.2.2 Software Reset Page Interrupt Handling Chapter 4 4.1 Loading and Unloading an Interrupt Service Routine (ISR) Page Page 4.2 Prioritizing Adapter Interrupts 4.3 Acknowledging Interrupts (Acking) 4.4 Interrupt Type Codes 4.4.1 No Interrupt (Invalid Code). Int_type = 000b 4.4.2 Tx EOF Interrupt. Int_type = 001b ThunderLAN Adaptive Performance Utilization Technical Brief 4.4.3 Statistics Overflow Interrupt. Int_type = 010b 4.4.4 Rx EOF Interrupt. Int_type = 011b 4.4.5 Dummy Interrupt. Int_type = 100b 4.4.6 Tx EOC Interrupt. Int_type = 101b 4.4.7 Network Status Interrupt. Int_type = 110b and Int_Vec = 00h 4.4.8 Adapter Check Interrupt. Int_type = 110b and Int_Vec 00h Interrupt Type Codes Interrupt Handling Figure 41. Adapter Check Interrupt Fields Table 41. Adapter Check Bit Definitions Interrupt Type Codes Table 42. Adapter Check Failure Codes Table 43. Relevance of Error Status Bits for Adapter Check Failure Codes 4.4.9 Rx EOC Interrupt. Int_type = 111b Page List Structures Chapter 5 List Management 5.1 List Management Some of the more commonly used list management terms are defined here: Figure 51. List Pointers and Buffers Figure 52. Linked List Management Technique Page 5.2 CSTAT Field Bit Requirements 5.3 One-Fragment Mode 5.4 Receive List Format Figure 53. Receive List Format One_Frag = 0 Figure 54. Receive List Format One_Frag = 1 Table 51. Receive Parameter List Fields Figure 55. Receive CSTAT Request Fields Table 52. Receive CSTAT Request Bits Figure 56. Receive CSTAT Complete Interrupt Disable register Fields 5.5 Transmit List Format Figure 57. Transmit List Format Table 54. Transmit Parameter List Fields Figure 58. Transmit CSTAT Request Fields Table 55. Transmit CSTAT Request Bits Figure 59. Transmit CSTAT Complete Fields Interrupt Disable register Table 56. Transmit CSTAT Complete Bits Transmitting and Receiving Frames Chapter 6 6.1 Frame Format 6.1.1 Receive (Rx) Frame Format Figure 61. Token Ring Logical Frame Format (Rx) Figure 62. Ethernet Logical Frame Format (Rx) Frame Format 6.1.2 Transmit (Tx) Frame Format Figure 63. Token Ring Logical Frame Format (Tx) Figure 64. Ethernet Logical Frame Format (Tx) 6.2 GO Command 6.2.1 Starting Frame Reception (Rx GO Command) Page 6.2.2 Starting Frame Transmission (Tx GO Command) Page Page Physical Interface (PHY) Chapter 7 7.1 MII-Enhanced Interrupt Event Feature Figure 71. 100VG-AnyLAN Support Through ThunderLANs Enhanced 802.3u MII MII-Enhanced Interrupt Event Feature Physical Interface (PHY) ThunderLAN implements the 19-signal MII shown in Table 71: Table 71. ThunderLAN MII Pins (100M-bps CSMA/CD) Figure 72. MII Frame Format: Read Figure 73. MII Frame Format: Write Table 72. Possible Sources of MII Event Interrupts Figure 74. Assertion of Interrupt Waveform on the MDIO Line Figure 75. Waveform Showing Interrupt Between MII Frames Page 7.3 Bit-Rate Devices 7.4 PHY Initialization Page Register Definitions A.1 PCI Configuration Registers Figure A1. PCI Configuration Register Address Map A.1.1 PCI Autoconfiguration from External 24C02 Serial EEPROM Figure A2. Configuration EEPROM Data Format A.1.2 PCI Vendor ID Register (@ 00h) Default = 104Ch A.1.3 PCI Device ID Register (@ 02h) Default = 0500h A.1.4 PCI Command Register (@ 04h) Table A1. PCI Command Register Bits A.1.5 PCI Status Register (@ 06h) : Table A2. PCI Status Register Bits Page A.1.13 PCI Memory Base Address Register (@ 14h) A.1.14 PCI BIOS ROM Base Address Register (@ 30h) A.1.15 PCI NVRAM Register (@ 34h) Table A3. PCI NVRAM Register Bits A.1.16 PCI Interrupt Line Register (@ 3Ch) A.1.17 PCI Interrupt Pin Register (@ 3Dh) A.1.18 PCI Min_Gnt (@ 3Eh) and Max_Lat (@ 3Fh) Registers A.1.19 PCI Reset Control Register (@ 40h) Table A4. PCI Reset Control Register Bits A.1.20 CardBus CIS Pointer (@ 28h) A.2 Adapter Host Registers Figure A3. Host Interface Address Map A.2.1 Host Command Register HOST_CMD @ Base_Address + 0 (Host) CMD Register Bits Page Page Page Page A.2.2 Channel Parameter Register CH_PARM @ Base_Address + 4 (Host) A.2.3 Host Interrupt Register HOST_INT @ Base_Address + 10 (Host) Table A6. HOST_INT Register Bits A.2.4 DIO Address Register DIO_ADR @ Base_Address + 8 (Host) Table A7. DIO ADR Register Bits RAM Addressing A.2.5 DIO Data Register DIO_DATA @ Base_Address + 12 (Host) A.3 Adapter Internal Registers Figure A4. ADAPTER Internal Register Map x A.3.1 Network Command Register NetCmd @ 0x00 (DIO) All bits in this register are set to 0 on an Ad_Rst or when PRST# is asserted. Table A8. Network Command Register Bits Table A8. Network Command Register Bits (Continued) A.3.2 Network Serial I/O Register NetSio @ 0x00 (DIO) Table A9. Network Serial I/O Register Bits Table A9. Network Serial I/O Register Bits (Continued) A.3.3 Network Status Register NetSts @ 0x00 (DIO) All bits in this register are set to 0 on an Ad_Rst or when PRST# is asserted. Table A10. Network Status Register Bits Table A10. Network Status Register Bits (Continued) A.3.4 Network Status Mask Register NetMask @ 0x00 (DIO) Table A11. Network Status Mask Register Bits A.3.5 Network Configuration Register NetConfig @ 0x04 (DIO) Table A12. Network Configuration Register Bits Table A12. Network Configuration Register Bits (Continued) Table A13. MAC Protocol Selection Codes A.3.6 Manufacturing Test Register ManTest @ 0x04 (DIO) A.3.7 Default PCI Parameter Registers @ 0x08 0x0C (DIO) Figure A5. Default PCI Parameter Register A.3.8 General Address Registers Areg_0-3 @ 0x10 0x24 (DIO) A.3.8.1 The All-Nodes Broadcast Address A.3.8.2 Token Ring Frame Format Addressing Extensions A.3.9 Hash Address Registers HASH1/HASH2 @ 0x28 0x2C (DIO) A.3.10 Network Statistics Registers @ 0x30 0x40 (DIO) Figure A6. Ethernet Error Counters Table A14. Ethernet Error Counters Figure A7. Demand Priority Error Counters Table A15. Demand Priority Error Counters A.3.11 Adapter Commit Register Acommit @ 0x40 (DIO) (Byte 3) The adapter commit register indicates the PCI commit size of the adapter. Table A16. Adapter Commit Register Bits A.3.12 LED Register LEDreg @ 0x44 (DIO) (Byte 0) A.3.13 Burst Size Register BSIZEreg @ 0x44 (DIO) (Byte 1) Table A17. Burst Size Register Bits A.3.14 Maximum Rx Frame Size Register MaxRx @ 0x44 (DIO) (Bytes 2 +3) A.3.15 Interrupt Disable Register - INTDIS @ 0x48 (DIO) (BYTE 0) Table A18. Demand Priority Error Counters A.4 10Base-T PHY Registers Figure A8. 10Base-T PHY Registers A.4.1 PHY Generic Control Register GEN_ctl @ 0x0 Table A19. PHY Generic Control Register Bits Table A19. PHY Generic Control Register Bits (Continued) A.4.2 PHY Generic Status Register GEN_sts @ 0x1 Table A20. PHY Generic Status Register Bits Table A20. PHY Generic Status Register Bits (Continued) A.4.3 PHY Generic Identifier GEN_id_hi/GEN_id_lo @ 0x2/0x3 A.4.4 Autonegotiation Advertisement Register AN_adv @ 0x4 Table A21. Autonegotiation Advertisement Register Bits A.4.5 Autonegotiation Link Partner Ability Register AN_lpa @ 0x5 Table A22. Autonegotiation Link Partner Ability Register Bits A.4.6 Autonegotiation Expansion Register AN_exp @ 0x6 Table A23. Autonegotiation Expansion Register Bits Page A.4.8 ThunderLAN PHY Control Register TLPHY_ctl @ 0x11 Table A24. ThunderLAN PHY Control Register Bits Table A24. ThunderLAN PHY Control Register Bits (Continued) A.4.9 ThunderLAN PHY Status Register TLPHY_sts @ 0x12 Table A25. ThunderLAN PHY Status Register Bits Table A25. ThunderLAN PHY Status Register Bits (Continued) Page Page B.1 100VG-AnyLAN Training Figure B1. 802.12 Training Frame Format Page Figure B2. Training Flowchart Page B.2 TNETE211 Register Descriptions TNETE211 Register Descriptions TNETE211 100VG-AnyLAN Demand Priority Physical Media Independent (PMI) Interface Figure B3. TNETE211 Registers B.2.1 PHY Generic Control Register GEN_ctl @ 0x0 Table B1. PHY Generic Control Register Bits Table B1. PHY Generic Control Register Bits (Continued) B.2.2 PHY Generic Status Register GEN_sts @ 0x1 Table B2. PHY Generic Status Register Bits Table B2. PHY Generic Status Register Bits (Continued) B.2.3 PHY Generic Identifier GEN_id_hi/GEN_id_lo @ 0x2/0x3 B.2.4 ThunderLAN PHY Identifier High/Low TLPHY_id @ 0x10 B.2.5 ThunderLAN PHY Control Register TLPHY_ctl @ 0x11 Table B3. ThunderLAN PHY Control Register Bits TNETE211 Register Descriptions TNETE211 100VG-AnyLAN Demand Priority Physical Media Independent (PMI) Interface B.2.6 ThunderLAN PHY Status Register TLPHY_sts @ 0x12 Table B4. ThunderLAN PHY Status Register Bits Table B4. ThunderLAN PHY Status Register Bits (Continued)