STM32F779IGH7 datasheet(48/255 Pages) STMICROELECTRONICS

48 / 255 page

Functional overview

STM32F777xx STM32F778Ax STM32F779xx

48/255

DocID028294 Rev 4

2.38

Management Data Input/Output (MDIO) slaves

The devices embed a MDIO slave interface it includes the following features:

•

32 MDIO Registers addresses, each of which is managed using separate input and

output data registers:

–

32 x 16-bit firmware read/write, MDIO read-only output data registers

–

32 x 16-bit firmware read-only, MDIO write-only input data registers

•

Configurable slave (port) address

•

Independently maskable interrupts/events:

–

MDIO Register write

–

MDIO Register read

–

MDIO protocol error

•

Able to operate in and wake up from STOP mode

2.39

Cryptographic acceleration

The devices embed a cryptographic accelerator. This cryptographic accelerator provides a

set of hardware acceleration for the advanced cryptographic algorithms usually needed to

provide confidentiality, authentication, data integrity and non repudiation when exchanging

messages with a peer.

•

These algorithms consist of:

Encryption/Decryption

–

DES/TDES (data encryption standard/triple data encryption standard): ECB

(electronic codebook) and CBC (cipher block chaining) chaining algorithms, 64-,

128- or 192-bit key

–

AES (advanced encryption standard): ECB, CBC, GCM, CCM, and CTR (counter

mode) chaining algorithms, 128, 192 or 256-bit key

Universal hash

–

SHA-1 and SHA-2 (secure hash algorithms)

–

MD5

–

HMAC

The cryptographic accelerator supports DMA request generation.

2.40

Random number generator (RNG)

All the devices embed an RNG that delivers 32-bit random numbers generated by an

integrated analog circuit.

2.41

General-purpose input/outputs (GPIOs)

Each of the GPIO pins can be configured by software as output (push-pull or open-drain,

with or without pull-up or pull-down), as input (floating, with or without pull-up or pull-down)

or as peripheral alternate function. Most of the GPIO pins are shared with digital or analog

alternate functions. All GPIOs are high-current-capable and have speed selection to better

manage internal noise, power consumption and electromagnetic emission.

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