LPC2148 Philips, LPC2148 Datasheet - Page 34

• Manufacturer Part Number: LPC2148
• Description: 16/32 Bit Microcontroller
• Manufacturer: Philips

Philips Semiconductors
10. Application information
9397 750 14985
Preliminary data sheet
Fig 5. External clock timing
Fig 6. Differential data-to-EOP transition skew and EOP width
Fig 7. LPC2142/2148 USB interface using the CONNECT function on pin 17
t
PERIOD
differential
data lines
10.1 Suggested USB interface solutions
9.1 Timing
V
DD
− 0.5 V
0.45 V
LPC2142/2148
n * t
differential data to
crossover point
SEO/EOP skew
PERIOD
+ t
0.2V
DEOP
0.2V
DD
V
CONNECT
V
D+
D−
V
Rev. 01 — 22 June 2005
DD
BUS
SS
DD
− 0.1 V
t
CHCL
+ 0.9 V
R S = 33 Ω
R S = 33 Ω
crossover point
t
CLCX
R1
1.5 kΩ
extended
soft-connect switch
T
clk
Single-chip 16/32-bit microcontrollers
t
CLCH
t
CHCX
002aab563
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
USB-B
connector
LPC2142/2148
source EOP width: t
receiver EOP width: t
002aab137
EOPT
002aab561
EOPR1
, t
EOPR2
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