MCIMX251AVM4 Freescale Semiconductor, MCIMX251AVM4 Datasheet - Page 122

• Manufacturer Part Number: MCIMX251AVM4
• Description: IC MPU I.MX25 AUTO 400MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX25r

Specifications of MCIMX251AVM4

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: 1-Wire, CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, POR, PWM, WDT
• Number Of I /o: 128
• Program Memory Type: External Program Memory
• Ram Size: 144K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.52 V
• Data Converters: A/D 3x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 400-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

3.7.20.1.4
Table 96
Figure 95
122
US26
US27
US28
US29
No.
Transmit
USB_SE0_VM
USB_DAT_VP
USB_TXOE_B
USB_TXOE_B
USB_SE0_VM
USB_DAT_VP
USB_VM1
USB_RCV
USB_VP1
defines the signals for USB in VP_VM unidirectional mode.
shows the USB transmit waveform in VP_VM unidirectional mode diagram.
Name
Table 95. USB Port Timing Specifications in VP_VM Bidirectional Mode (continued)
VP_VM Unidirectional Mode Timing
Rx rise/fall time
Rx rise/fall time
Parameter
Rx skew
Rx skew
Figure 95. USB Transmit Waveform in VP_VM Unidirectional Mode
Table 96. Signal Definitions for USB VP_VM Unidirectional Mode
i.MX25 Applications Processor for Automotive Products, Rev. 8
US33
Direction
USB_SE0_VM
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
Differential Rx data
Rx VP data when USB_TXOE_B is high
Rx VM data when USB_TXOE_B is high
Direction
Out
Out
US30
In
In
US34
Min.
–6.0
–4.0
—
—
US32
Signal Description
Max.
+2.0
+4.0
3.0
3.0
Unit
ns
ns
ns
ns
Freescale Semiconductor
US31
Reference Signal
USB_SE0_VM
USB_DAT_VP
Condition/
35 pF
35 pF