IMX35 datasheet(12/148 Pages) FREESCALE

12 / 148 page

i.MX35 Applications Processors for Automotive Products, Rev. 6

Freescale Semiconductor

OSC24M

24-MHz

reference

oscillator

Analog

Clock

The signal from the external 24-MHz crystal is the source of the

CLK24M signal fed into USB PHY as the reference clock and to the

real time clock (RTC).

MPLL

PPLL

Digital

phase-locked

loops

SDMA

Clocks

DPLLs are used to generate the clocks:

MCU PLL (MPLL)—programmable

Peripheral PLL (PPLL)—programmable

PWM

Pulse-width

modulator

ARM

ARM1136

platform

peripherals

The pulse-width modulator (PWM) is optimized to generate sound

from stored sample audio images; it can also generate tones.

RTC

Real-time

clock

ARM

Clocks

Provides the ARM1136 platform with a clock function (days, hours,

minutes, seconds) and includes alarm, sampling timer, and minute

stopwatch capabilities.

SDMA

Smart DMA

engine

SDMA

System

controls

The SDMA provides DMA capabilities inside the processor. It is a

shared module that implements 32 DMA channels and has an

interface to connect to the ARM1136 platform subsystem, EMI

interface, and the peripherals.

SJC

Secure JTAG

controller

ARM

Pins

The secure JTAG controller (SJC) provides debug and test control

with maximum security.

SPBA

SDMA

peripheral bus

arbiter

SDMA

System

controls

The SPBA controls access to the SDMA peripherals. It supports

shared peripheral ownership and access rights to an owned

peripheral.

S/PDIF

Serial audio

interface

SDMA

Connectivity

peripherals

Sony/Philips digital transceiver interface

SSI(2)

Synchronous

serial interface

SDMA,

ARM(2)

Connectivity

peripherals

The SSI is a full-duplex serial port that allows the processor

connected to it to communicate with a variety of serial protocols,

including the Freescale Semiconductor SPI standard and the I2C

sound (I2S) bus standard. The SSIs interface to the AUDMUX for

flexible audio routing.

UART(3)

Universal

asynchronous

receiver/trans

mitters

ARM

(UART1,2)

SDMA

(UART3)

Connectivity

peripherals

Each UART provides serial communication capability with external

devices through an RS-232 cable using the standard RS-232

non-return-to-zero (NRZ) encoding format. Each module transmits

and receives characters containing either 7 or 8 bits

(program-selectable). Each UART can also provide low-speed IrDA

compatibility through the use of external circuitry that converts

infrared signals to electrical signals (for reception) or transforms

electrical signals to signals that drive an infrared LED (for

transmission).

Table 4. Digital and Analog Modules (continued)

Block

Mnemonic

Block Name

Domain1

Subsystem

Brief Description

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