AT83C5122_08 ATMEL [ATMEL Corporation], AT83C5122_08 Datasheet - Page 198
AT83C5122_08
Manufacturer Part Number
AT83C5122_08
Description
C51 Microcontroller with USB and Smart Card Reader Interfaces
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT83C5122_08.pdf
(208 pages)
- Current page: 198 of 208
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USB Interface
198
AT83R5122, AT8xC5122/23
Differential
Data Lines
V
CRS
This diagram indicates when signals are clocked internally. The time it takes the signals
to propagate to the pins, however, ranges from 25 to 125 ns. This propagation delay is
dependent on variables such as temperature and pin loading. Propagation also varies
from output to output and component. Typically though (T
WR propagation delays are approximately 50 ns. The other signals are typically 85 ns.
Propagation delays are incorporated in the AC specifications.
Symbol
t
FDRATE
V
t
t
t
t
DJ1
DJ2
JR1
JR2
t
t
CRS
R
F
Parameter
Rise Time
Fall Time
Full-speed Data Rate
Crossover Voltage
Source Jitter Total to next transaction
Source Jitter Total for paired
transactions
Receiver Jitter to next transaction
Receiver Jitter for paired transactions
10%
Rise Time
t
R
90%
90%
11.9700
Fall Time
-18.5
Min
-3.5
1.3
-4
-9
4
4
t
F
10%
A
Typ
=25 C fully loaded) RD and
(5)
12.0300
Max
18.5
2.0
3.5
4202F–SCR–07/2008
20
20
4
9
V
V
Unit
Mb/s
Hmin
Lmax
ns
ns
ns
ns
ns
ns
V
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