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參數資料
型號: ISP1760
廠商: NXP Semiconductors N.V.
英文描述: Hi-Speed Universal Serial Bus host controller for embedded applications
中文描述: 高速嵌入式應用的通用串行總線主控制器
文件頁數: 86/105頁
文件大小: 449K
代理商: ISP1760
9397 750 13257
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 01 — 8 November 2004
86 of 105
Philips Semiconductors
ISP1760
Embedded Hi-Speed USB host controller
14. Dynamic characteristics
[1]
Recommended accuracy of the clock frequency is 50 ppm for the crystal and oscillator. The oscillator used depends on V
CC(I/O)
.
Recommended values for external capacitors when using a crystal are 22 pF to 27 pF.
[2]
Table 84:
Symbol Parameter
Crystal oscillator
f
clk
clock frequency
[1]
Dynamic characteristics: system clock timing
Conditions
Min
Typ
Max
Unit
crystal
[2]
oscillator
-
-
12
12
-
-
MHz
MHz
External clock input
J
external clock jitter
δ
clock duty cycle
V
clk
amplitude
t
CR
, t
CF
rise time and fall time
-
-
-
-
-
50
1.8
-
500
-
-
3
ps
%
V
ns
Table 85:
V
CC(I/O)
= 1.65 V to 3.6 V; T
amb
=
40
°
C to +85
°
C; unless otherwise specified.
Symbol
Parameter
SR
output slew rate (rise, fall)
Dynamic characteristics: CPU interface block
Conditions
standard load
Min
1
Typ
-
Max
4
Unit
V/ns
Table 86:
V
CC(I/O)
= 1.65 V to 3.6 V; T
amb
=
40
°
C to +85
°
C; unless otherwise specified.
Symbol Parameter
Driver characteristics
t
HSR
high-speed differential rise time
t
HSF
high-speed differential fall time
Z
HSDRV
drive output resistance (this also
serves as a high-speed
termination)
Clock timing
t
HSDRAT
data rate
t
HSFRAM
microframe interval
t
HSRFI
consecutive microframe interval
difference
Dynamic characteristics: high-speed source electrical characteristics
Conditions
Min
Typ
Max
Unit
10 % to 90 %
90 % to 10 %
includes the R
S
resistor
500
500
40.5
-
-
45
-
-
49.5
ps
ps
479.76
124.9375
1
-
-
-
480.24
125.0625
four
high-speed
bit times
Mbit/s
μ
s
ns
Table 87:
V
CC(I/O)
= 1.65 V to 3.6 V; T
amb
=
40
°
C to +85
°
C; unless otherwise specified.
Symbol
Parameter
Driver characteristics
t
FR
rise time
Dynamic characteristics: full-speed source electrical characteristics
Conditions
Min
Typ
Max
Unit
C
L
= 50 pF; 10 % to 90 % of
|
V
OH
V
OL
|
C
L
= 50 pF; 90 % to 10 % of
|
V
OH
V
OL
|
4
-
20
ns
t
FF
fall time
4
-
20
ns
t
FRFM
differential rise and fall time
matching
90
-
111.1
%
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