MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1353

• Manufacturer Part Number: MCIMX281AVM4B
• Description: IC MPU I.MX28 1.2 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX281AVM4B

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 454MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Program Memory Size: 128KB (32K x 32)
• Program Memory Type: Mask ROM
• Ram Size: 32K x 32
• Voltage - Supply (vcc/vdd): 1.25 V ~ 5.25 V
• Data Converters: A/D 17x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 289-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

Chapter 18
Boundary Scan Interface
18.1 Boundary Scan Interface
This chapter describes the boundary scan feature that has been implemented on the i.MX28.
This feature is provided to enable board level testing.
There are five pins on the device which are used to implement the IEEE 1149.1 boundary
scan protocol. In order to make use of the boundary scan functionality, an extra pin called
DEBUG must be tied to low. The following table shows the pin information that is used to
implement boundary scan.
There are six instructions implemented in the boundary scan design. The following table
describes these instructions:
Freescale Semiconductor, Inc.
TCK
TMS
TDI
TRST_N
TDO
DEBUG
Name of Pin
This is the clock that is used to serially shift data in to the part.
This signal is used to select the test mode.
This is the serial data that is used to shift in data into the boundary scan register.
It is also be used to shift in instructions into the instruction register and data into
the I/O configuration register.
This is the reset signal for the block.
This is the output of the boundary scan chain.
This is the selection for the JTAG interface.
DEBUG=0: JTAG interface works for boundary scan.
DEBUG=1: JTAG interface works for ARM debugging. This chapter does not
cover ARM Debugging.
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Table 18-1. Boundary Scan Pin Functions
Function
Input
Input
Input
Input
Output
Input
Direction
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