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LPC1766_0.02
© NXP B.V. 2008. All rights reserved.
Objective data sheet
Rev. 00.02 — 12 August 2008
62 of 70
NXP Semiconductors
LPC1766
Fast communication chip
14. Application information
14.1 Suggested USB interface solutions
Fig 31. LPC1766 USB interface on a self-powered device
LPC17xx
USB-B
connector
USB_D+
USB_CONNECT
soft-connect switch
USB_D
−
VBUS
VSS
VDD(3V3)
R1
1.5 k
Ω
RS = 33 Ω
002aad939
RS = 33 Ω
USB_UP_LED
Fig 32. LPC1766 USB interface on a bus-powered device
LPC17xx
VDD(3V3)
R1
1.5 k
Ω
R2
USB_UP_LED
002aad940
USB-B
connector
USB_D+
USB_D
−
VBUS
VSS
RS = 33 Ω
RS = 33 Ω