March 2008
rev 0.2
Deviation Vs Resistance (MR=0)
2000
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
0
5
10
15
20
25
Resistance (KOhms)
-7dB
480MHz Fundamental Frequency Attenuation[dB]
PCS3P73U00A
Deviation Vs Resistance (MR=1)
2000
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
0
10
20
30
40
50
60
70
Resistance (KOhms)
-7dB
480MHz Fundamental Frequency Attenuation[dB]
Pk-Pk Deviation (PPM)
Pk-Pk Deviation (PPM)
12MHz_FS=0
15MHz_FS=0
24MHz_FS=0
24MHz_FS=1
25MHz_FS=0
25MHz_FS=1
30MHz_FS=1
48MHz_FS=1
USB 2.0 Compliance
12MHz_FS=0
15MHz_FS=0
24MHz_FS=0
24MHz_FS=1
25MHz_FS=0
25MHz_FS=1
30MHz_FS=1
48MHz_FS=1
USB Compliance
-4dB
-4dB
-2dB
30
35
40
80
90
-2dB
100
Fig2: Deviation VsResistance
for USB 2.0 Compliance (MR=0)
Fig3: Deviation VsResistance
for USB 2.0 Compliance (MR=1)
SSEXTR Resistance Table for USB2.0 compliance (R
Compliance
)
VDD=3.3V; MR=0
Frequency
(MHz)
12
15
24
25
30
48
FS
(MHz)
0
0
0
1
0
1
1
1
SSEXTR*
Resistance (KΩ)
10
8.87
6.81
13.7
6.98
13.7
12.1
10
30
48
VDD=3.3V; MR=1
Frequency
(MHz)
12
15
24
25
FS
(MHz)
0
0
0
1
0
1
1
1
SSEXTR*
Resistance (KΩ)
17.8
13
6.49
39.2
6.49
35.7
29.4
19.1
VDD=2.5V; MR=0
Frequency
(MHz)
12
15
24
25
30
48
FS
(MHz)
0
0
1
1
1
1
SSEXTR*
Resistance (KΩ)
10
8.87
13.7
13.7
12.1
10
VDD=2.5V; MR=1
Frequency
(MHz)
12
15
24
25
30
48
FS
(MHz)
0
0
1
1
1
1
SSEXTR*
Resistance (KΩ)
17.8
13
39.2
35.7
29.4
19.1
*
:
Standard 1% tolerance Resistors
USB 2.0 Peak EMI reduction IC
Notice: The information in this document is subject to change without notice.
6 of 13
PULSECORE [ PulseCore Semiconductor ]
