Freescale Semiconductor M9328MX21ADSE Operation, Functional Block Diagram, On-Board Memory

Configuration and Operation

2.3Operation

This section describes how the system functions and how to use the boards.

2.3.1Functional Block Diagram

Figure 2-3shows the functional interconnections of the ADS in a block diagram format.

Base Board

Power Connector,

Power Switch & fuse

3V regulator, CPU

Reset signal

UART1, UART2 & IrDA

UART signals

Ext.

UART

UART controller

Ethernet

port

Ethernet controller

USB series

mini-AB connector

USB OTG Transceiver

			Addr /Data Bus		Addr /Data Bus		USBOTG signals			LCD Board
								LCDC	LCD connector
				CPU Board						White	TFT LCD DC-
LEDs & Buzzer	IO pins, PWM									LED	DC converter
			NAND Flash			Multi-ICE				driver
			Connector			connector
Boot mode,				NFC signals
UARTs, IrDA
selection			SDRAM			i.MX21			Touch screen		LCD panel
									controller
1-wire Interface		OWIRE	Burst Flash							(240x320 pixels) & Touch
											screen
Silicon & Board	Decoder& Chip		Addr /Data bus			Addr /Data bus			Battery Level
									Measurement
		selectlogic
revision register			High Speed			IO pins			Emulation
								I2C	TV Encoder connector
			Addr/DataBus			Transceiver
			Connectors
S/W readable
DIP switches			2.5V, 1.8V and
			1.5V regulators		Base board connectors
Line In		SSI
	Audio							KPP	Keypad	Keypad Board
Mic In			Peripheral signals	Peripheral signals		CSI signals		MMC/SD signals
	CODEC								Connector
Speaker			Expansion	Expansion		Image sensor		MMC/SD
Out
			Connector 2	Connector 1		connector		connector

Figure 2-3. Functional Block Diagram of M9328MX21ADSE

2.3.2On-Board Memory

Figure 2-4and Figure 2-5show the on-board memory interface. The M9328MX21ADSE is equipped with 8M x 32-bit Burst Flash and 16M x 32-bit SDRAM. The chip selects CS0 and CS2 (CSD0) are used for Burst Flash and SDRAM chip selects, respectively.

M9328MX21ADSE User’s Manual, Rev. A

2-4 Freescale Semiconductor