TI380FPA Datasheet, PDF (7/24 Pages) Texas Instruments – PACKETBLASTER™

TI380FPA
PACKETBLASTERā
SPWS011A − MARCH 1995 − REVISED AUGUST 1995
instructions for reading TI380FPA silicon revision code
The TI380FPA contains a register which returns a hard-wired value reflecting the revision of the TI380FPA
silicon. The register can be read only before the CPHALT bit (in the SIFACL register) is cleared and the bring-up
diagnostics (BUD) begins executing.
The following steps should be taken to read the revision register:
1. Set the ARESET bit in the SIFACL register (bit 8) to 1.
2. Wait a minimum of 14 µs for the reset to take place.
3. Clear the ARESET bit and set the CPHALT bit in the same write to the SIFACL register.
4. One hundred µs after step 3, read adapter memory location 01.023E to obtain the silicon revision level.
Steps 1 through 3 are explained in more detail in the TMS380 Second-Generation Token-Ring User’s Guide
(literature number SPWU005).
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