DIO interface description | Texas Instruments TNETX4090 guide

TNETX4090

ThunderSWITCH II 9-PORT 100-/1000-MBIT/S ETHERNET SWITCH

SPWS044E ± DECEMBER 1997 ± REVISED AUGUST 1999

DIO interface description (continued)

Table 3 and Table 4 list the least significant byte address for the port-specific statistics. Each statistic is four bytes long. To determine the address of a particular statistic, replace the xx in the head column with the characters from the tail address. Table 3 has two tail columns: one for even-numbered ports and the other for odd-numbered ports. See the TNETX4090 Programmer's Reference Guide, literature number SPAU003, for a detailed description of the statistic registers.

Example:
Port 7 head	=	0x83xx
64-octet frames tail	=	A8 (odd-numbered port)
Port 7 octet frames statistic	=	0x83A8

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Texas Instruments TNETX4090 specifications DIO interface description

Contents

Description MII MAC MIIMAC Eeprom CPU I/F DMA PCS Duplex LED Rdram Interface Jtag Interface GGP Package Bottom View Signal-to-Ball Mapping Signal Names Sorted Alphabetically Signal Ball Name Reset Sdma SAD0 Terminal Functions Jtag interfaceControl logic interface Terminal Internal Description Name RESISTOR² 100-/1000-Mbit/s MAC interface Gmii mode M08TXD7 M08TXD6 M08TXD5 Terminal Internal Description Name Resistor Port to not support pause frames 10-/100-Mbit/s MAC interface MII mode ports 0±7 Pulldown M00RENEG M01RENEG ThunderSWITCH II 9-PORT 100-/1000-MBIT/S ETHERNET Switch M04TCLK M05TCLK M06TCLK M07TCLK AD4 MII management interface Rdram interface DIO interface Eeprom interface Power supply LED interface100-/1000-Mbit/s port PCS LED interface DIO interface description DIO Internal Register Address MapByte DIO Address ThunderSWITCH II 9-PORT 100-/1000-MBIT/S ETHERNET TNETX4090 VLAN1QID VLAN0QID VLAN37QID VLAN36QID TNETX4090 PCS8Status PCS8Control 0x0700 DIO interface description Port Statistics TailPort no Head Statistic Even ODD Ports Port no Head Statistic Tail 0x90Ex DMA Interface Signals Signal DescriptionAddress-Lookup Statistics Receiving/transmitting management frames State of DIO signal terminals during hardware reset DIO Interface During Hardware ResetDIO Interface State During Hardware Reset Ieee Std 802.1Q Vlan tags on the NM port Vlan ID FCSTpid TCI CRC TNETX4090 PHY management interface Full-duplex NM portNM bandwidth and priority Interrupt processing MAC interface Adaptive performance optimization APO Interframe gap enforcementBackoff Receive versus transmit priority 10-/100-Mbit/s MII ports 0±7 Speed, duplex, and flow-control negotiation 100-Mbit/s Port Negotiation With the TNETE2104 100-/1000-Mbit/s PHY interface port Port 8 Duplex Negotiation in MII Mode Port 8 Pause Negotiation in MII ModeFull-duplex hardware flow control Outcome Pretagging and extended port awareness Pretag on transmissionM08GTCLK M08TXEN Transmit Pretag Bit Definitions Pretag on receptionLearning Format Receive Pretag Bit Definitions BIT Name Function Directed Format Receive Pretag Bit Definitions Ring-cascade topologyRXD Flow COL TXD TNETX4090 RXD Flow COL TXD Switch Terminal Ring-Topology ConnectivityM08GTCLK M08TXEN M08RXDV SCL SDA Edio TNETX4090 EclkGND Outcome Stop Load Initd ² Fault LED Eclk Interaction of Eeprom load with the SIO registerSummary of Eeprom load outcomes Compatibility with future device revisions Port LED StatesCollision LED States State Display PCS duplex LED LED Status Bit Definitions and Shift OrderLamp test Multi-LED display BUS Enable GND BUS Ctrl Rdram SIN BUS Enable GND Rdram BUS Ctrl SINTNETX4090 VCC NC Txclk Vref Rxclk VDD Sout SCHAIN0 Txclk Vref Rxclk VDD Jtag Instruction Opcodes Highz instructionRacbist instruction Jtag Bist Status Frame routing Vlan supportIale Address maintenance Ieee Std 802.1Q tags ± receptionIeee Std 802.1Q header ± transmission Spanning-tree support Aging algorithms Frame-Routing Algorithm SPWS044E ± December 1997 ± Revised August Port routing code Port trunking/load sharing Removal of source port Port trunking example Trunk Group 0 Port Membership Trunk0Ports RegisterTrunk Group 1 Port Membership Trunk1Ports Register Extended port awareness Flow control Other flow-control mechanisms Hardware flow controlMulticast limit System test capabilities Reading Rdram Internal wrap test Duplex wrap test PHY TNETX4090 Recommended operating conditions MIN NOM MAX Unit Jtag interface Control signals Reset see FigureTiming requirements over recommended operating conditions Physical medium attachment interface port Receive PMA receive see Figure Transmit PMA transmit see Figure Gmii port Gmii receive see FigureGmii transmit see Figure PMA and Gmii clock see Figure Gmii Clock MII ports 0±8 MII receive see Figure MII transmit see Figure MII clock see Figure Rdram interface Rdram see FigureDtxclk Drxclk Dbusctrl Dbusen DIO interface DIO and DMA writes see FigureSCS Srnw SAD1±SAD0 Sdma SDATA7± SDATA0 Srdy Sint DIO and DMA reads see Figure SCS Srnw SAD1±SAD0 Sdma SDATA7± SDATA0 Srdy Eeprom interface Eeprom writes see FigureEeprom reads see Figure LED interface LED see FigureLedclk Leddata VOH VOL TTL Output Macro Propagation-Delay-Time Voltage Waveforms VDD VOH 50% LvcmosVOL VDD Mechanical Data TNETX4090GGP Obsolete BGA TBD Important Notice