RM46L450
RM46L850
SPNS184 –SEPTEMBER 2012
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5.13 Universal Serial Bus Controller
5.13.1 Features
This device provides several varities 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.
5.13.2 Electrical and Timing Specifications
Table 5-41. Full-Speed USB Interface Timing Requirements(1)
NO.
Parameter
td(VPL, VML)
MIN
MAX
Unit
FSU20
Time duration, RCVDPLS and
RCVDMNS low together during
transition
14
ns
FSU21
td(VPH, VMH)
Time duration, RCVDPLS and
RCVDMNS high together during
transition
8
ns
(1) The capacitive loading is equivalent tp 15 pF
Table 5-42. Full-Speed USB Interface Switching Characteristics(1)
NO.
Parameter
td(TXENL–DATV)
MIN
MAX
Unit
FSU15
Delay time TXENL active to
TXDPLS valid
0
1.5
ns
FSU16
FSU17
FSU18
FSU19
td(TXENL–SE0V)
ts(DAT–SE0)
td(TXENH–DATI)
td(TXENH–SE0I)
Delay time TXENL active to TXSE0
valid
0
1.5
1.5
1.5
1.5
ns
ns
ns
ns
Skew between TXDPLS and TXSE0
transition
Delay time TXENL inactive to
TXDPLS invalid
0
0
Delay time TXENL inactive to
TXSE0 invalid
(1) The capacitive loading is equivalent tp 15 pF
Transmit
TXENL
Receive
FSU15
FSU18
FSU19
TXDPLS
FSU16
FSU17
TXSE0
FSU20
FSU20
FSU21
FSU21
RCVDPLS
RCVDMNS
RCVDATA
Figure 5-27. Full-Speed USB Interface – Transmit and Receive Modes
164
Peripheral Information and Electrical Specifications
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