lpc2142 NXP Semiconductors, lpc2142 Datasheet - Page 33

• Manufacturer Part Number: lpc2142
• Description: Single-chip 16-bit/32-bit Microcontrollers; Up To 512 Kb Flash With Isp/iap, Usb 2.0 Full-speed Device, 10-bit Adc And Dac
• Manufacturer: NXP Semiconductors

NXP Semiconductors
10. Application information
LPC2141_42_44_46_48_3
Product data sheet
Fig 8. External clock timing
Fig 9. Differential data-to-EOP transition skew and EOP width
Fig 10. LPC2141/42/44/46/48 USB interface using the CONNECT function on pin 17
t
PERIOD
differential
data lines
V
DD
= 1.8 V
10.1 Suggested USB interface solutions
9.1 Timing
V
DD
0.45 V
0.5 V
LPC2141/42/
0.2V
44/46/48
0.2V
n
DD
differential data to
crossover point
SE0/EOP skew
DD
t
PERIOD
0.1 V
0.9 V
+ t
FDEOP
CONNECT
V
VBUS
D
D
V
Rev. 03 — 19 October 2007
DD
SS
t
CHCL
R S = 33
R S = 33
crossover point
t
R1
1.5 k
CLCX
soft-connect switch
extended
T
LPC2141/42/44/46/48
cy(clk)
Single-chip 16-bit/32-bit microcontrollers
t
CLCH
t
CHCX
002aab563
source EOP width: t
receiver EOP width: t
USB-B
connector
002aaa907
© NXP B.V. 2007. All rights reserved.
FEOPT
002aab561
EOPR1
, t
EOPR2
33 of 39