MCIMX27VOP4 Datasheet, PDF (96/118 Pages) Freescale Semiconductor, Inc – Multimedia Applications Processor

Signal Descriptions
• VP_VM unidirectional, 6-wire mode
3.5.20.1 DAT_SE0 Bidirectional Mode
Table 50. Signal Definitions—DAT_SE0 Bidirectional Mode
Name
USB_TXOE_B
USB_DAT_VP
USB_SE0_VM
Direction
Out
Out
In
Out
In
Signal Description
• Transmit enable, active low
• TX data when USB_TXOE_B is low
• Differential RX data when USB_TXOE_B is high
• SE0 drive when USB_TXOE_B is low
• SE0 RX indicator when USB_TXOE_B is high
USB_DAT_VP
USB_SE0_VM
Figure 59. USB Transmit Waveform in DAT_SE0 Bidirectional Mode
USB_TXOE_B
USB_DAT_VP
USB_SE0_VM
Figure 60. USB Receive Waveform in DAT_SE0 Bidirectional Mode
Table 51. OTG Port Timing Specification in DAT_SE0 Bidirectional Mode
Parameter
TX Rise/Fall Time
TX Rise/Fall Time
TX Rise/Fall Time
Signal Name
Direction
Min
Max
Unit
Conditions/
Reference Signal
USB_DAT_VP
Out
USB_SE0_VM
Out
USB_TXOE_B
Out
—
5.0
ns
—
5.0
ns
—
5.0
ns
50 pF
50 pF
50 pF
i.MX27 Data Sheet, Advance Information, Rev. 0.1
96
Preliminary—Subject to Change Without Notice
Freescale Semiconductor