TNETX3150 datasheet(74/113 Pages) TI1

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TNETX3150/TNETX3150A

ThunderSWITCH™ 15-PORT 10-/100-MBIT/S ETHERNET™ SWITCH

SPWS027F – FEBRUARY 1997 – REVISED SEPTEMBER 1997

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

SNMP

A CPU through an Ethernet MAC or suitable protocol translating device can be directly connected to one of the

TNETX3150/TNETX3150A ports for use with SNMP. See Figure 31.

SNMP Support

CPU

Memory

RCLK

TCLK

100-/10-Mbit/s

MAC

RXD0–RXD3

TXD0–TXD3

RXDV

RXER

TXEN

TXER

CSR

COL

M0xRCLK

M0xTXD0–M0xTXD3

M0xRXD0–M0xRXD3

M0xTXEN

M0xTXER

M0xRXDV

M0xRXER

CSR

COL

M0xSPEED

M0xDUPLEX

MIB Counters

DIO Interface

100-/10-Mbit/s

MAC

OSC

SNMP Agent MAC

MODE

OSC

SPEED

DUPLEX

100 Mbit/s

10 Mbit/s

25 MHz

2.5 MHz

Dependent on external MAC

M0xTCLK

TNETX3150/TNETX3150A

Figure 31. SNMP Support Application

SNMP support requires an interface to a CPU and CPU-controlled software. The speed and duplex terminals

must be configured correctly to ensure proper operation. This is a proposed schematic and has not been tested.

manufacturing test features

The methodology of these tests is considered before implementation. All tests are based on an incremental

approach, building upon tested results before reaching the final goal. For tests using the DIO interface (for

example), the DIO interface should be tested and then, if it is functioning correctly, the next depth of testing

should be performed (i.e., internal to the TNETX3150/TNETX3150A testing). If a test fails using this

methodology, the cause of the failure can be determined quickly and test/debug time reduced.

primary test access: DIO testing

The DIO registers can be written to and read directly from the terminal interface. This level of testing is trivial,

but essential, before continuing to internally test the TNETX3150/TNETX3150A.

TNETX3150 数据表(PDF) 74 Page - Texas Instruments

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