Texas Instruments TNETX3270 - page 17

TNETX3270

ThunderSWITCH 24/3 ETHERNET SWITCH

WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS

SPWS043B – NOVEMBER 1997 – REVISED APRIL 1999

17

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Table 2. Detailed DIO Register Map (Continued)

BYTE 3 BYTE 2 BYTE 1 BYTE 0 DIO

ADDRESS

Findnode<23–16> Findnode<31–24> Findnode<39–32> Findnode<47–40> 0x0440

FindVLAN Findcontrol Findnode<7–0> Findnode<15–8> 0x0444

Findport 0x0448

Newnode<23–16> Newnode<31–24> Newnode<39–32> Newnode<47–40> 0x044C

Reserved Newnode<7–0> Newnode<15–8> 0x0450

NewVLAN Newport 0x0454

Addnode<23–16> Addnode<31–24> Addnode<39–32> Addnode<47–40> 0x0458

AddVLAN Adddelcontrol Addnode<7–0> Addnode<15–8> 0x045C

Addport 0x0460

Agednode<23–16> Agednode<31–24> Agednode<39–32> Agednode<47–40> 0x0464

AgedVLAN Agedport Agednode<7–0> Agednode<15–8> 0x0468

Delnode<23–16> Delnode<31–24> Delnode<39–32> Delnode<47–40> 0x046C

DelVLAN Delport Delnode<7–0> Delnode<15–8> 0x0470

Agingcounter Numnodes 0x0474

Reserved 0x0478:0x07FF

Reserved DMAaddress 0x0800

Reserved Int 0x0804

Reserved Intenable 0x0808

Systest Freestacklength 0x080C

RAMaddress 0x0810

Reserved RAMdata 0x0814

Reserved NMRxcontrol 0x0818

Reserved NMTxcontrol 0x081C

Reserved NMdata 0x0820

Reserved 0x0824:0x3FFF

TNETX3270 reset: reinitializes the TNETX3270 0x4000:0x5FFF

Reserved 0x6000:0x7FFF

Port and network management port statistics 0x8000:8DFF

Reserved 0x8E00:8FFF

TX pause, RX pause, and security-violation counters 0x9000:0x91BF

Reserved 0x91C0:0x9FFF

Unknown unicast destination addresses 0xA000

Unknown multicast destination addresses 0xA004

Unknown source address 0XA008

Reserved 0xA00C:0xFFFF

Contents

Main TNETX3270 ThunderSWITCH24/3 ETHERNET SWITCH WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS TNETX3270 ThunderSWITCH24/3 ETHERNET SWITCH WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS description TNETX3270 ThunderSWITCH24/3 ETHERNET SWITCH WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS ThunderSWITCH24/3 ETHERNET SWITCH WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS SPWS043B NOVEMBER 1997 REVISED APRIL 1999 PGV PACKAGE (TOP VIEW) ThunderSWITCH 24/3 ETHERNET SWITCH PRODUCT PREVIEW Figure 1. TNETX3270 Interface Block Diagram Page TNETX3270 10-/100-Mbit/s MAC interface (ports 2426) 10-/100-Mbit/s MAC interface (ports 2426) (continued) SDRAM interface WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS host DIO interface serial MII management PHY interface EEPROM interface LED interface JTAG interface miscellaneous power interface summary of signal terminals by signal group function DIO register groups Table 1. Internal Register and Statistics Memory Map Table 2. Detailed DIO Register Map Page Page Page interface description receiving/transmitting management frames state of DIO signals during hardware reset network management port Page Page receive control giant (long) frames short frames receive filtering of frames data transmission transmit control adaptive performance optimization (APO) (transmit pacing) interframe gap enforcement ThunderSWITCH 24/3 ETHERNET SWITCH WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS receive versus transmit priority uplink pretagging Table 5. Source-Port Pretag Encoding Page TNETX3270 interaction of EEPROM load with the SIO register summary of EEPROM load outcomes compatibility with future device revisions HIGHZ instruction lamp test multi-LED display hardware configurations Page TNETX3270 Figure 6. 10-Mbit/s Interface-Port Signal Timing Figure 7. Connecting to TNETE2008 PHY 10-/100-Mbit/s port configuration 10-/100-Mbit/s port configuration (continued) 10-/100-Mbit/s port configuration in a nonmanaged switch 10-/100-Mbit/s port configuration in a managed switch SDRAM interface (continued) Table 15. TNETX3270 Terminal Interface to SDRAMs SDRAM-type and quantity indication initialization refresh 39 frame routing txacc Figure 8. VLAN Overview Transmit rxacc IEEE Std 802.1Q headers reception IEEE Std 802.1Q headers transmission address maintenance spanning-tree support aging algorithms frame-routing determination Unkmem Figure 9. Frame-Routing Algorithm interrupt UnkVLAN Figure 9. Frame-Routing Algorithm (Continued) new chng secvio Port Trunking/Load Sharing port mirroring port trunking/load sharing collision-based flow control IEEE Std 802.3 flow control Page internal wrap test duplex wrap test Page absolute maximum ratings over operating junction temperature range (unless otherwise noted) recommended operating conditions electrical characteristics over recommended operating conditions (unless otherwise noted) PARAMETER MEASUREMENT INFORMATION test measurement 10-Mbit/s interface (ports 0023) timing requirements (see Notes 3 through 6 and Figure 13) Figure 13. 10-Mbit/s Interface (Ports 0023) 10-/100-Mbit/s MAC interface Figure 14. 10-/100-Mbit/s Receive Ports 10-/100-Mbit/s timing requirements (see Note 7 and Figure 14) 10-/100-Mbit/s timing requirements (see Figure 15) operating characteristics over recommended operating conditions (see Note 8 and Figure 15) Figure 15. 10-/100-Mbit/s Transmit Ports SDRAM interface SDRAM subcycle operating characteristics over recommended operating conditions (see Figure 17) Figure 17. SDRAM Subcycle DIO/DMA interface Figure 18. DIO/DMA Write Cycle timing requirements (see Figure 18) operating characteristics over recommended operating conditions (see Figure 18) DIO/DMA read cycle timing requirements (see Figure 19) Figure 19. DIO/DMA Read Cycle operating characteristics over recommended operating conditions (see Figure 19) serial MII management interface timing requirements (see Figure 20) operating characteristics over recommended operating conditions (see Figure 20) Figure 20. Serial MII Management Read/Write Cycle EEPROM interface operating characteristics over recommended operating conditions (see Figure 21) Figure 21. EEPROM LED interface operating characteristics over recommended operating conditions (see Figure 22) Figure 22. LED power-up OSCIN and RESET timing requirements (see Figure 23) Figure 23. Power-Up OSCIN and RESET MECHANICAL DATA PGV (S-PQFP-G240) PLASTIC QUAD FLATPACK (DIEDOWN)