MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1098
MCIMX281AVM4B
Manufacturer Part Number
MCIMX281AVM4B
Description
IC MPU I.MX28 1.2 289MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX28r
Datasheets
1.MCIMX283DVM4B.pdf
(2327 pages)
2.MCIMX283DVM4B.pdf
(20 pages)
3.MCIMX281AVM4B.pdf
(72 pages)
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
- Current page: 1098 of 2327
- Download datasheet (17Mb)
DDR PHY
14.7.4 Data Slice Overview
Each data-slice manages a byte (8-bit) of data and it’s corresponding signals.
The Read Data Path captures read data by latching it into read data buffers by both the
posedge and negedge of delayed_dqs. Then, the read data is synchronized from delayed_dqs
clock domain to emi_clk domain.
The Write Data Path synchronizes write data and write data mask (the dm) from emi_clk
domain to the dqs_out domain.
The Digital DLL controls the delay values of read delay-line and write delay-line. It can be
bypassed and switched to manual delay control mode. In manual delay control mode, the
delay values of read/write delay-line can be programmed separately into the control registers.
1098
EMI_CLK
write
read
data
data
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Read Delay-Line
Write Delay-Line
Read Data
Figure 14-9. DDR PHY Data Slice
Delay Control
Digital DLL &
I/O Control
delayed_dqs
Path
Write Data
Path
Data Slice
(delayed)
clk_wr
io_dq_out [7:0]
io_dq_oe [7:0]
io_dq_in [7:0]
io_dqs_out
io_tsel_dm
io_dqs_oe
io_dm_oe
io_dqs_in
io_tsel
io_dm
Freescale Semiconductor, Inc.
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