Datasheet

Table 15-10. Interrupt Mode (continued)
ValueRegister/Bit Field/Programming ModelStep
-SHA_LENGTH[31:0] LENGTHLoad the message length; this is the trigger to start
processing.
SHA/MD5 DMA Mode
The procedure in configures the SHA/MD5 module to work in DMA-based mode.
Table 15-11. DMA Mode
ValueRegister/Bit Field/Programming ModelStep
0x1SHA_SYSCONFIG[3] DMA_ENEnable the DMA request to the CDMA controller.
-SHA_LENGTH[31:0] LENGTHLoad the message length; this is the trigger to start
processing.
SHA/MD5 Event Servicing
Interrupt Servicing
This section describes the interrupt event servicing of the module. Figure 15-3 on page 1058 shows
the interrupt subroutine. The following registers are used in the SHA/MD5 interrupt routine:
SHA_IRQSTATUS, SHA_DATA_n_IN, SHA_ODIGEST_A, SHA_DIGEST_COUNT, SHA_LENGTH,
and SHA_IDIGEST_A.
1057June 18, 2014
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TM4C129ENCPDT Microcontroller