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PCIMX258CJM4A Datasheet(PDF) 119 Page - Freescale Semiconductor, Inc

Part # PCIMX258CJM4A
Description  i.MX25 Applications Processor for Consumer and Industrial Products
PDF  144 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PCIMX258CJM4A Datasheet(HTML) 119 Page - Freescale Semiconductor, Inc

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i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 3
Freescale Semiconductor
119
Figure 92 shows the USB receive waveform in DAT_SE0 unidirectional mode diagram.
Figure 92. USB Receive Waveform in DAT_SE0 Unidirectional Mode
Table 91 shows the USB port timing specification in DAT_SE0 unidirectional mode.
3.7.20.1.3
VP_VM Bidirectional Mode Timing
Table 92 defines the VP_VM bidirectional mode signals.
Table 91. USB Port Timing Specification in DAT_SE0 Unidirectional Mode
No.
Parameter
Signal Name
Signal
Source
Min.
Max.
Unit
Condition/
Reference Signal
US9
Tx rise/fall time
USB_DAT_VP
Out
—
5.0
ns
50 pF
US10
Tx rise/fall time
USB_SE0_VM
Out
—
5.0
ns
50 pF
US11
Tx rise/fall time
USB_TXOE_B
Out
—
5.0
ns
50 pF
US12
Tx duty cycle
USB_DAT_VP
Out
49.0
51.0
%
—
US13
Enable Delay
USB_DAT_VP
USB_SE0_VM
In
—
8.0
ns
USB_TXOE_B
US14
Disable Delay
USB_DAT_VP
USB_SE0_VM
In
—
10.0
ns
USB_TXOE_B
US15
Rx rise/fall time
USB_VP1
In
—
3.0
ns
35 pF
US16
Rx rise/fall time
USB_VM1
In
—
3.0
ns
35 pF
US17
Rx rise/fall time
USB_RCV
In
—
3.0
ns
35 pF
Table 92. Signal Definitions—VP_VM Bidirectional Mode
Name
Direction
Signal Description
USB_TXOE_B
Out
• Transmit enable, active low
USB_DAT_VP
Out (Tx)
In (Rx)
• Tx VP data when USB_TXOE_B is low
• Rx VP data when USB_TXOE_B is high
USB_SE0_VM
Out (Tx)
In (Rx)
• Tx VM data when USB_TXOE_B low
• Rx VM data when USB_TXOE_B high
USB_RCV
In
• Differential Rx data
US14
US17
US13
RCV
USB_DAT_VP
USB_SE0_VM
Receive



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