LPC2925 NXP Semiconductors, LPC2925 Datasheet - Page 64

• Manufacturer Part Number: LPC2925
• Description: (LPC2921 - LPC2925) ARM9 microcontroller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 33.
C
[1]
LPC2921_2923_2925_0
Preliminary data sheet
Symbol
t
t
t
V
t
t
t
t
t
t
r
f
FRFM
FEOPT
FDEOP
JR1
JR2
EOPR1
EOPR2
Fig 21. Differential data-to-EOP transition skew and EOP width
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L
CRS
= 50 pF; R
Characterized but not implemented as production test. Guaranteed by design.
t
PERIOD
differential
data lines
Dynamic characteristics: USB pins (full-speed)
pu
= 1.5 k
9.2 USB interface
Parameter
rise time
fall time
differential rise and fall time
matching
output signal crossover voltage
source SE0 interval of EOP
source jitter for differential transition
to SE0 transition
receiver jitter to next transition
receiver jitter for paired transitions
EOP width at receiver
EOP width at receiver
Ω
on D+ to V
n × t
differential data to
crossover point
DD(3V3)
SE0/EOP skew
PERIOD
, unless otherwise specified.
+ t
FDEOP
Rev. 00.01 — 24 October 2008
Conditions
10 % to 90 %
10 % to 90 %
see
see
10 % to 90 %
must reject as
EOP; see
Figure 21
must accept as
EOP; see
Figure 21
t
r
/ t
Figure 21
Figure 21
f
crossover point
extended
ARM9 microcontroller with CAN and LIN
LPC2921/2923/2925
[1]
[1]
Min
8.5
7.7
-
1.3
160
−2
−18.5
−9
40
82
source EOP width: t
receiver EOP width: t
Typ
-
-
-
-
-
-
-
-
-
-
© NXP B.V. 2008. All rights reserved.
Max
13.8
13.7
109
2.0
175
+5
+18.5
+9
-
-
FEOPT
002aab561
EOPR1
, t
EOPR2
64 of 81
Unit
ns
ns
%
V
ns
ns
ns
ns
ns
ns