BCM4354 Data Sheet
USB Interface
USB Full-Speed Timing
Table 13 shows timing specifications for the VDD_USB = 3.3V, VSS = 0V, and TA = 0°C to 85°C operating
temperature range.
Table 13: USB Full-Speed Timing Specifications
Reference Characteristics
Minimum
Maximum
Unit
1
2
3
4
Transition rise time
Transition fall time
4
20
ns
4
20
ns
Rise/fall timing matching
Full-speed data rate
90
111
%
12 – 0.25%
12 + 0.25%
Mb/s
Figure 17: USB Full-Speed Timing
2
1
D+
D-
90%
90%
VCRS
10%
10%
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 55
BROADCOM CONFIDENTIAL