mcimx27- Freescale Semiconductor, Inc, mcimx27- Datasheet - Page 101

• Manufacturer Part Number: mcimx27-
• Description: Multimedia Applications Processor
• Manufacturer: Freescale Semiconductor, Inc

3.6.14.4
Freescale Semiconductor
TX Rise/Fall Time
TX Rise/Fall Time
TX Rise/Fall Time
TX Duty Cycle
TX High Overlap
TX Low Overlap
Enable Delay
Disable Delay
RX Rise/Fall Time
RX Rise/Fall Time
RX Skew
RX Skew
Parameter
USB_TXOE_B
USB_SE0_VM
USB_DAT_VP
USB_RCV
USB_VM1
USB_VP1
Name
VP_VM Unidirectional Mode
Table 56. OTG Port Timing Specification in VP_VM Bidirectional Mode
Table 57. Signal Definitions—VP_VM Unidirectional Mode
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
Signal Name
USB_RCV
Preliminary—Subject to Change Without Notice
Direction
i.MX27 and i.MX27L Data Sheet, Rev. 1.2
Out
Out
Out
In
In
In
Direction
Out
Out
Out
Out
Out
Out
Out
Out
In
In
In
In
RX VM data when USB_TXOE_B is high
RX VP data when USB_TXOE_B is high
TX VM data when USB_TXOE_B is low
TX VP data when USB_TXOE_B is low
49.0
–4.0
–6.0
Min
0.0
—
—
—
—
—
—
—
—
Transmit enable, active low
Signal Description
Differential RX data
Max
51.0
10.0
+4.0
+2.0
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
Signal Descriptions
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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