PRELIMINARY
CYW54907
Table 54. USB 2.0 Electrical and Timing Parameters (Cont.)
Parameter Symbol Minimum
Output fall time
Typical
Maximum Units
Conditions
THSF
THSTX
RO
500
–0.05
40.5
700
–
–
ps
UI
90% to 10%
Transmitter jitter
–
45
–
0.05
49.5
1100
Transmit output jitter
Single ended
Output impedance
Ω
Chirp-J output voltage (differential)
VCHIRPJ
mV
HS termination disabled. 1.5
kΩ ± 5% pull-up resistor
connected.
Chirp-K output voltage (differential)
VCHIRPK
–900
–
–500
mV
HS termination disabled. 1.5
kΩ ± 5% pull-up resistor
connected.
Note: Refer to Section 7 of the USB 2.0 specification (www.usb.org) for more information on the receiver eye diagram template.
Table 55 provides electrical and timing parameters for USB 1.1.
Table 55. USB 1.1 FS/LS Electrical and Timing Parameters a
Value
Parameter
Symbol
Unit
Condition
Minimum
Typical
Maximum
Baud Rate
FS
LS
BPS
BPS
–
–
12
–
–
Mbps
Mbps
–
–
1.5
Unit Interval
FS
LS
UI
UI
–
–
83.33
–
–
ns
ns
–
–
666.67
Receiver
Differential input sensitivity
Input common mode range
Input impedance
VFSDI
VFSCM
ZIN
200
0.8
300
2.0
–
–
–
–
–
–
–
2.5
–
mV
V
Static |VIDP – VIDN |
–
kΩ
V
–
Input high voltage
VFSIH
VFSIL
–
Static
Static
Input low voltage
0.8
V
Transmitter
Output high voltage
VFSOH
VFSOL
TR,TF
TR,TF
FSTX
LSTX
RO
2.8
–
–
–
–
–
–
–
–
–
0.3
20
300
2
V
V
Static
Static
Output low voltage
Output rise/fall time for fast speed
Output rise/fall time for low speed
Fast-speed jitter
4
ns
ns
ns
ns
Ω
10 to 90%
10 to 90%
–
75
–2
–25
28
Low-speed jitter
25
44
–
Output impedance
Single ended
a. For more details, refer to the USB 1.1 Specification.
Document Number: 002-19312 Rev. *C
Page 87 of 95
CYPRESS [ CYPRESS ]
