Datasheet

Table Of Contents
RM46L852
SPNS185C SEPTEMBER 2012 REVISED JUNE 2015
www.ti.com
7.13 Universal Serial Bus (USB) Host and Device Controllers
7.13.1 Features
This device provides several varieties of USB functionality, including:
One full-speed USB device port compatible with the USB Specification Revision 2.0 and USB
Specification Revision 1.1
Two USB host ports compatible with USB Specification Revision 2.0, which is based on the OHCI
Specification For USB Release 1.0.
7.13.2 Electrical and Timing Specifications
Table 7-43. Full-Speed USB Interface Timing Requirements
NO. Parameter MIN MAX Unit
FSU20 t
d(VPL, VML)
Host time duration, USBx.VP and 15 ns
USBx.VM low together during
transition
(1)
Device time duration, USBx.VP and 15 ns
USBx.VM low together during
transition
FSU21 t
d(VPH, VMH)
Host time duration, USBx.VP and 15 ns
USBx.VM high together during
transition
(1)
Device time duration, USBx.VP and 15 ns
USBx.VM high together during
transition
(1) Applies to both host ports, USB1 and USB2
Table 7-44. Full-Speed USB Interface Switching Characteristics
(1)
NO. Parameter MIN MAX Unit
FSU15 t
d(TXENL–TXDATV)
Host delay time USBx.TXEN active -2.3 2.1 ns
to USBx.TXDAT valid
(2)
Device delay time USBx.TXEN active -2.6 0.8 ns
to USBx.TXDAT valid
FSU16 t
d(TXENL–TXSE0V)
Host delay time USBx.TXEN active -2.9 1.8 ns
to USBx.TXSE0 valid
(2)
Device delay time USBx.TXEN active -1.7 1.0 ns
to USBx.TXSE0 valid
FSU17 t
s(TXDAT–TXSE0)
Host skew between USBx.TXDAT 0 1.7 ns
and USBx.TXSE0 transition
(2)
Device skew between USBx.TXDAT 0 2.1 ns
and USBx.TXSE0 transition
FSU18 t
d(TXENH–TXDATI)
Host delay time USBx.TXEN inactive -2.0 2.2 ns
to USBx.TXDAT invalid
(2)
Device delay time USBx.TXEN -2.0 0.7 ns
inactive to USBx.TXDAT invalid
FSU19 t
d(TXENH–TXSE0I)
Host delay time USBx.TXEN inactive -2.6 1.9 ns
to USBx.TXSE0 invalid
(2)
Device delay time USBx.TXEN -1.3 0.9 ns
inactive to USBx.TXSE0 invalid
(1) The capacitive loading is equivalent to 15 pF
(2) Applies to both host ports, USB1 and USB2
172 Peripheral Information and Electrical Specifications Copyright © 2012–2015, Texas Instruments Incorporated
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