USS-820D Просмотр технического описания (PDF) - Agere -> LSI Corporation

Номер в каталоге

Компоненты Описание

производитель

USS-820D

USB Device Controller

Agere -> LSI Corporation 

Data Sheet, Rev. 4

June 2001

USS-820D

USB Device Controller

Register Timing Characteristics (continued)

Table 5. Register Access Timing—Special Function Register (SFR) Write

Symbol

Parameter

Min

Unit

tWRASU

Write Address Setup Time (starts before the trailing edge of WRN or

IOCSN, whichever is first)

60

ns

tWRAHD

Write Address Hold (starts after the trailing edge of WRN or IOCSN,

whichever is first)

−10

ns

tWRPW Write Minimum Pulse Width (from the leading edge of WRN or IOCSN,

23

ns

whichever is last, to the trailing edge of WRN or IOCSN, whichever is

first)

tWRDSU Write Data Setup (from data valid to the trailing edge of WRN or IOCSN, 60

ns

whichever is first)

tWRDHD Write Data Hold (from the trailing edge of WRN or IOCSN, whichever is

−10

ns

first, to data not valid)

tWRREC Recovery Time Between Write Attempts (from the trailing edge of WRN

23

ns

or IOCSN, whichever is first, to the next leading edge of WRN or IOCSN,

whichever is last)

tWRRECC Recovery Time Between Write Completes (from the trailing edge of WRN 86

ns

or IOCSN, whichever is first, to the next trailing edge of WRN or IOCSN,

whichever is first)

IOCSN

WRN

A

D

tWRPW

tWRRECC

tWRREC

tWRASU

VALID

tWRAHD

tWRDSU

VALID

tWRDHD

Figure 7. Register Access Timing—SFR Write

VALID

VALID

5-5353

Agere Systems Inc.

11

Share Link: