79RC32355 Datasheet, PDF (33/47 Pages) Integrated Device Technology – Communications Processor

IDT 79RC32355
USBCLKP
Tjitter1
USBDN
Tperiod1
90%
USBDP
USBDN
10%
Trise2
Tfdrate
USBDP
Tfall1
Thigh1
90%
Trise1
Tlow1
Tstate
10%
Tfall2
Tseop
Treop
Figure 17 USB AC Timing Waveform
Signal
Symbol
Reference ^133MHz
Edge _{Min Max}
150MHz
Min Max
180MHz
Min Max
Timing
Unit Conditions Diagram
Reference
UART
U0SINP, U0RIN, U0DCDN,
U0DSRN, U0CTSN, U1SINP,
U1DSRN, U1CTSN
Tsu¹
Thld¹
CLKP rising 5 — 5 — 5 — ns
3 — 3 — 3 — ns
U0SOUTP, U0DTRN, U0RTSN,
U1SOUTP, U1DTRN, U1RTSN
Tdo¹
CLKP rising 1 12 1 12 1 12 ns
1 _{These are asynchronous signals and the values are provided for ATE (test) only.}
Table 12 UART AC Timing Characteristics
33 of 47
May 25, 2004