MCIMX255AJM4AR2 Freescale Semiconductor, MCIMX255AJM4AR2 Datasheet - Page 121

• Manufacturer Part Number: MCIMX255AJM4AR2
• Description: Processors - Application Specialized IMX25 1.2 AUTO
• Manufacturer: Freescale Semiconductor

Specifications of MCIMX255AJM4AR2

• Core: ARM926EJ-S
• Processor Series: MCIMX25
• Maximum Clock Frequency: 400 MHz
• Instruction / Data Cache Memory: 16 KB
• Data Ram Size: 128 KB
• Operating Supply Voltage: 1.15 V to 1.52 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: MAPBGA-400
• Interface Type: USB
• Memory Type: DDR2
• Minimum Operating Temperature: - 40 C

Table 95
3.7.20.1.4
Table 96
Freescale Semiconductor
US18
US19
US20
US21
US22
US23
US24
US25
US26
US27
US28
US29
No.
USB_TXOE_B
USB_SE0_VM
USB_DAT_VP
USB_VM1
USB_RCV
USB_VP1
shows the USB port timing specification in VP_VM bidirectional mode.
defines the signals for USB in VP_VM unidirectional mode.
Name
VP_VM Unidirectional Mode Timing
Tx rise/fall time
Tx rise/fall time
Tx high overlap
Rx rise/fall time
Rx rise/fall time
Tx rise/fall time
Tx low overlap
Disable delay
Tx duty cycle
Enable delay
Table 95. USB Port Timing Specifications in VP_VM Bidirectional Mode
Parameter
Rx skew
Rx skew
Table 96. Signal Definitions for USB VP_VM Unidirectional Mode
i.MX25 Applications Processor for Automotive Products, Rev. 9
Direction
USB_SE0_VM
USB_TXOE_B
USB_SE0_VM
USB_SE0_VM
USB_SE0_VM
USB_SE0_VM
USB_SE0_VM
USB_DAT_VP
USB_DAT_VP
USB_DAT_VP
USB_DAT_VP
USB_DAT_VP
USB_DAT_VP
Out
Out
Out
Signal Name
In
In
In
USB_RCV
Transmit enable, active low
Tx VP data when USB_TXOE_B is low
Tx VM data when USB_TXOE_B is low
Rx VP data when USB_TXOE_B is high
Rx VM data when USB_TXOE_B is high
Differential Rx data
Direction
Out
Out
Out
Out
Out
Out
Out
Out
In
In
In
In
Min.
49.0
–4.0
–6.0
0.0
—
—
—
—
—
—
—
—
Signal Description
Max.
+4.0
+2.0
51.0
10.0
5.0
5.0
5.0
0.0
8.0
3.0
3.0
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
Reference Signal
USB_TXOE_B
USB_TXOE_B
USB_SE0_VM
USB_DAT_VP
USB_DAT_VP
USB_DAT_VP
Condition/
50 pF
50 pF
50 pF
35 pF
35 pF
—
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