I.MX27L Просмотр технического описания (PDF) - Freescale Semiconductor

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производитель

I.MX27L

Multimedia Applications Processor

Freescale Semiconductor 

Functional Description and Application Information

Table 2. Digital and Analog Modules (continued)

Block Mnemonic Block Name

Functional

Grouping

Brief Description

Section/

Page

IIM

JTAGC

KPP

LCDC

M3IF

MAX

MSHC

NFC

PCMCIA

PLL

PWM

IC Identification

Module

Security

The IIM provides an interface for reading—and in some cases,

programming, and overriding identification and control

information stored in on-chip fuse elements.

Contact your Freescale Semiconductor sales office or

distributor for additional information on SCC, RTIC, IIM,

SAHARA2

2.3.17/17

JTAG Controller

Debug

The JTAGC provides debug access to the ARM926 core,

built-in self-test (BIST), and boundary scan test control.

2.3.18/17

Keypad Port

Connectivity The KPP is used for key pad matrix scanning or as a general 2.3.19/17

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

scanning a keypad matrix.

Liquid Crystal

Display

Controller

Multimedia The LCDC provides display data for external gray-scale or

Interface color LCD panels.

2.3.20/17

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

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

6 × 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

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: The i.MX27L does not support the MSHC feature

2.3.23/19

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

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

Phase Lock

Loop

Clock and The two DPLLs provide clock generation in digital and mixed 2.3.26/20

Reset Control analog/digital chips designed for wireless communication and

other applications.

Pulse-Width

Modulator

Timer

Peripheral

The PWM has a 16-bit counter and is optimized to generate 2.3.27/20

sound from stored sample audio images. It can also generate

tones.

i.MX27 and i.MX27L Data Sheet, Rev. 1.8

Freescale Semiconductor

7

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