IMX27L datasheet(7/122 Pages) FREESCALE

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Functional Description and Application Information

i.MX27/i.MX27L Data Sheet, Advance Information, Rev. 1

Freescale Semiconductor

Preliminary—Subject to Change Without Notice

KPP

Keypad Port

Connectivity

Peripheral

The KPP is used for key pad matrix scanning or as a general

purpose I/O. This peripheral simplifies the software task of

scanning a keypad matrix.

2.3.19/17

LCDC

Liquid Crystal

Display

Controller

Multimedia

Interface

The LCDC provides display data for external gray-scale or

color LCD panels.

2.3.20/18

M3IF

Multi-Master

Memory

Interface

External

Memory

Interface

The M3IF controls memory accesses from one or more

masters through different port interfaces to different external

memory controllers ESDCTL/MDDRC, PCMCIA, NFC, and

WEIM.

2.3.21/18

MAX

Multi-layer

AHB Crossbar

Switch

Bus Control

The ARM926EJ-S processor’s instruction and data buses and

all alternate bus master interfaces arbitrate for resources via a

× 3 MAX. There are six fully functional master ports (M0–M5)

and three fully functional slave ports (S0–S2). The MAX is

uni-directional. All master and slave ports are AHB-Lite

compliant.

2.3.22/18

MSHC

Memory Stick

Host Controller

Connectivity

Peripheral

The MSHC is placed in between the AIPI and the customer

memory stick to support data transfer from the i.MX27 device

to the customer memory stick.

Note:

This feature is not available on MX27L.

2.3.23/19

NFC

NAND Flash

Controller

External

Memory

Interface

The NFC is a submodule of EMI. The NFC implements the

interface to standard NAND Flash memory devices.

2.3.24/19

PCMCIA

Personal

Computer

Memory Card

International

Association

External

Memory

Interface

The PCMCIA host adapter module provides the control logic

for PCMCIA socket interfaces, and requires some additional

external analog power switching logic and buffering.

2.3.25/20

PLL

Phase Lock

Loop

Clock and

Reset Control

The two DPLLs provide clock generation in digital and mixed

analog/digital chips designed for wireless communication and

other applications.

2.3.26/20

PWM

Pulse-Width

Modulator

Timer

Peripheral

The PWM has a 16-bit counter and is optimized to generate

sound from stored sample audio images. It can also generate

tones.

2.3.27/20

RTC

Real Time

Clock

Timer

Peripheral

The RTC module provides a current stamp of seconds,

minutes, hours, and days. Alarm and timer functions are also

available for programming. The RTC supports dates from the

year 1980 to 2050.

2.3.28/20

RTIC

Run-Time

Integrity

Checkers

Security

The RTIC ensures the integrity of the contents of the peripheral

memory and assists with boot authentication.

2.3.29/21

Table 2. Digital and Analog Modules (continued)

Block Mnemonic

Block Name

Functional

Grouping

Brief Description

Section/

Page

IMX27L Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc

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