MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 2033
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
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deserializer and holding register. The receive state machine handles the rx_valid, rx_validh,
and handshake with the USB controller. The handshake is not interlocked, in that there is
no rx_ready signal coming from the controller. The controller must take each 16-bit value
as presented by the PHY. The receive state machine provides an rx_active signal to the
controller that indicates when it is inside a valid packet (SYNC detected, and so on).
32.2.4 Analog Receiver
The analog receiver comprises five differential receivers, two single-ended receivers, and
a 9X, 480 MHz HS data sampling module, as shown in the figure below and described
further in this section.
32.2.4.1 HS Differential Receiver
The high-speed differential receiver is both a differential analog receiver and threshold
comparator. Its output is a one if the differential signal is greater than a 0-V threshold.
Otherwise, its output is 0. Its purpose is to discriminate the ± 400-mV differential voltage
resulting from the high-speed drivers current flow into the dual 45 terminations found on
Freescale Semiconductor, Inc.
Figure 32-2. USB 2.0 PHY Analog Transceiver Block Diagram
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
LS/FS Differential RCVR
HS Differential RCVR
Squelch
USB_Plugged_In_Detect
HS_Disconnect_Detect
Single-Ended Detector SE_DP
Single-Ended Detector SE_DM
LS/FS DataDrive
LS/FS Driver Output Enable
FS Edge Mode Select
RPU Enable
HS Drive Enable
HS Data Drive
Assert SE0
HS Current Source Enable
power-down controls
Test and discrete
Receiver
Transmitter
VDDIO
(3.3V)
USB_DN
USB_DP
1500
15000
15000
Chapter 32 Integrated USB 2.0 PHY
Cable
USB
2033
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