CAT4 (4390X) Implementation Specific

General Description

This section provides details about the 4390X implementation of the Cypress HAL.

All information within this section is platform specific and is provided for reference. Portable application code should depend only on the APIs and types which are documented in the HAL Drivers section.

Note

There is no configurator support for 4390X devices. Therefore, all cyhal_<peripheral>_init_cfg functions are unsupported on this platform, and will return an error if called.

HAL Resource Hardware Mapping

The following table shows a mapping of each HAL driver to the lower level firmware driver and the corresponding hardware resource. This is intended to help understand how the HAL is implemented for 4390X and what features the underlying hardware supports.

HAL Resource	CAT4 Hardware
Clock	All clocks (system & peripheral)
DMA	M2M DMA
Ethernet	Ethernet
GPIO	GPIO
Hardware Manager	NA
LPTimer	PMU Timer
M2M DMA	M2M DMA
PWM	PWM
SysPM	System Power Resources
System	System Resources
Timer	CPU Timer
UART	Fast, Slow, GCI UARTs
WDT	WDT

API Reference
	Clocks
	Implementation specific interface for using the Clock driver.
	DMA (Direct Memory Access)
	DMA allows transferring data in SRAM without CPU intervention.
	4390X Specific Hardware Types
	Aliases for types which are part of the public HAL interface but whose representations need to vary per HAL implementation.
	M2M DMA (Memory-to-Memory Direct Memory Access)
	M2M DMA allows transferring data between memory regions without CPU intervention.
	Pins
	Definitions for the pinout for each supported device.
	System
	Routines for accessing global resources shared across multiple drivers.
	Triggers
	Trigger connections for supported device families.
	I2C
	PWM (Pulse Width Modulator)
	SPI
	Power Management
	CAT4 (CYW943907 and CYW954907) devices use SLEEP and DEEPSLEEP.
	Timer
	UART