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DA16200

Ultra Low Power Wi-Fi SoC

Datasheet

Revision 3.6

04-Jan-2023

CFR0011-120-00

41 of 153

7.6

HW Accelerators

7.6.1

Zeroing of SRAM

DA16200 provides a function to quickly set a constant value for the set SRAM area. This function is

mainly used to initialize the set SRAM area to zero and can be used even when SRAM is used.

For example, assuming that the entire 512 KB SRAM is being initialized, the processing time is 8192

cycles based on the CPU clock, that is, the maximum processing time is 8192 cycles irrespective of

the SRAM size to be initialized.

For more information to use this function, see Ref. [2].

7.6.2

CRC Calculation

The CRC algorithm detects the corruption of data during transmission and detects a higher

percentage of errors than a simple checksum. The CRC calculation consists of an iterative algorithm

involving XOR and shifts operations that is executed much faster in hardware than in software. The

CRC calculator is mainly used to check the flash image and the features of CRC calculator in

DA16200 are summarized below:

■ Operation clock frequency is up to 160 MHz, the same as CPU clock

■ Supports 8-bit, 16-bit, and 32-bit data paths

■ Performs CRC operation simultaneously in real time during data transfer on the selected AHB

bus

■ Operation type of CRC calculation

□ CRC-32: generator polynomial is G(x) = x^32 + x^26 + x^23 + x^22 + x^16 + x^12 + x^11 +

x^10 +x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + 1

□ CRC-16 CCITT: generator polynomial is G(x) = x^16 + x^12 + x^5 +1

□ CRC-16 IBM: generator polynomial is G(x) = x^16 + x^15 + x^2 +1

For more information to use this function, see Ref. [2].

7.6.3

Pseudo Random Number Generator (PRNG)

DA16200 provides a function, PRNG, to generate a pseudo random number. The features of PRNG

in DA16200 are summarized as follows:

■ Operation clock frequency is up to 160 MHz, the same as CPU clock

■ Supports partial parallel processing of 8-bit, 16-bit, and 32-bit unit

Generator polynomial is G(x) = x^31 + x^28 + 1 (Ref. [3])

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