TMS470MF06607 datasheet(29/65 Pages) TI2

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TMS470MF06607

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SPNS157C

– JANUARY 2012

3.11.2 MBIST

The TMS470M family supports memory built-in self test (MBIST) of the system and peripheral SRAM. The

MBIST is accessible via the application in order to facilitate memory self test by the application by

enabling the MBIST controllers associated with the specific RAMs to be tested. (For device-specific

MBIST controller assignments, see Table 2-3.)

The MBIST controller:

•

Supports testing of all system and peripheral RAM.

•

Captures the MBIST results in the MBIST status register (MSTFAIL).

•

Supports execution of each Memory BIST controller in parallel (MSINENA).

For MSIENA bit assignments, see Table 2-3

•

Supports execution of each Memory BIST controller individually (MSINENA).

For MSIENA bit assignments, see Table 2-3

The MBIST controller selection is mapped to the MBIST controller/memory initialization enable register

(MSIENA) within the SYS register frame. Each MBIST controller is enabled by setting the corresponding

bit within this register and then enabling memory self-test via the memory self-test global enable within the

global control register (MSTGCR.MSTGENA[3:0]).

The MBIST controllers support execution of the following tests:

•

March13N, background 0

•

March11N, background A

•

Checkerboard and Inverse Checkerboard

•

March13N, background 3, 0F, and 69

•

PMOS Address decoder Algorithm

•

ROM2 algorithm for STC

NOTE

The algorithm to be applied is selectable via the memory self-test global control register algo

selection field (MSTGCR.MBIST_ALGSEL[7:0]).

Device Configuration

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