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© Freescale Semiconductor, Inc., 2006, 2007. All rights reserved.
Freescale Semiconductor
Product Brief
Document Number: MC9328MX21SPB
Rev. 1.2, 10/2007
Freescale’s i.MX family of microprocessors has
demonstrated leadership in the portable handheld
market. Building on the success of the MX (Media
Extensions) series, the i.MX21S (MC9328MX21S)
provides a leap in performance with an ARM926EJ-S
™
microprocessor core that provides accelerated Java
support in addition to highly integrated system functions.
The i.MX21S device addresses the needs of multiple
markets with intelligent integrated peripherals, advanced
ARM
®
processor core, and power management
capabilities.
The i.MX21S features the advanced and power-efficient
ARM926EJ-S core operating at speeds up to 266 MHz
and is part of a growing family of Smart Speed products
that offer high performance processing optimized for
lowest power consumption. On-chip modules such as an
LCD controller, USB On-The-Go, 1-Wire
®
interface,
and synchronous serial interfaces offer designers a rich
suite of peripherals that can enhance many products.
For cost sensitive applications, the NAND Flash
controller allows the use of low cost Nand Flash devices
to be used as primary or secondary non-volatile storage.
The on-chip ECC and parity checking circuitry of the
MC9328MX21S Applications Processor
Contents
1 i.MX21S Block Diagram . . . . . . . . . . . . . . . . . . . .2
2 i.MX21S Features . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1 ARM926EJ-S Core Complex . . . . . . . . . . . . . . . . . . . .3
2.2 System Control and Timers . . . . . . . . . . . . . . . . . . . . .4
2.3 Memory Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.4 Inter-Chip Connectivity . . . . . . . . . . . . . . . . . . . . . . . . .7
2.5 Display and Video Modules . . . . . . . . . . . . . . . . . . . . .8
2.6 Two Multimedia Card and
Secure Digital Host Controller Modules . . . . . . . . . . . .9
2.7 Digital Audio Mux . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.8 Connectivity and Expansion . . . . . . . . . . . . . . . . . . . . .9
2.9 Debug Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.10 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.11 Electronic and Package Information . . . . . . . . . . . . . .14
3 Document Revision History . . . . . . . . . . . . . . .14
