Texas Instruments CC3235 SimpleLink Series - DES Interrupt Service; DES Interrupt Mode; DES DMA Mode

www.ti.com DES Module Programming Guide – Low-Level Programming Models
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SWRU543–January 2019
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Data Encryption Standard Accelerator (DES)
18.4.2.2 DES Interrupt Mode
Table 18-5 lists the DES interrupt mode steps.
Table 18-5. DES Interrupt Mode
Step Register/Bit Field/Programming Model Value
Enable DES module interrupts. DES_IRQENABLE[2:0] 0x7
Load the input buffer data LSW register. DES_DATA_L[31:0] DATA_L –
Load the input buffer data HSW register. DES_DATA_H[31:0] DATA_H –
18.4.2.3 DES Interrupt DMA Mode
Table 18-6 lists the DES DMA mode steps.
Table 18-6. DES DMA Mode
Step Register/Bit Field/Programming Model Value
Enable DES module DMA requests. DES_SYSCONFIG[7:5] 0x7
Load the input buffer data LSW register. DES_DATA_L[31:0] DATA_L –
Load the input buffer data HSW register. DES_DATA_H[31:0] DATA_H –
18.4.3 DES Events Servicing
18.4.3.1 Interrupt Servicing
This section describes the event servicing of the module. Figure 18-6 shows the DES interrupt service.
The registers used during event servicing are: DES_IRQSTATUS, DES_DATA_L, and DES_DATA_H.
Figure 18-6. DES Interrupt Service