TMS320LF2407_08 Datasheet, PDF (67/116 Pages) Texas Instruments – DSP CONTROLLERS

TMS320LF2407, TMS320LF2406, TMS320LF2402
DSP CONTROLLERS
SPRS094I − APRIL 1999 − REVISED SEPTEMBER 2003
PARAMETER MEASUREMENT INFORMATION
timing parameter symbology
Timing parameter symbols used are created in accordance with JEDEC Standard 100. To shorten the symbols,
some of the pin names and other related terminology have been abbreviated as follows:
A
A[15:0]
Cl
XTAL1/CLKIN
CO
CLKOUT
D
D[15:0]
INT
XINT1, XINT2
MS
Memory strobe pins IS, DS, or PS
R
READY
RD
Read cycle or RD
RS
RESET pin RS
W
Write cycle or WE
Lowercase subscripts and their meanings:
a
access time
c
cycle time (period)
d
delay time
f
fall time
h
hold time
r
rise time
su
setup time
t
transition time
v
valid time
w
pulse duration (width)
Letters and symbols and their meanings:
H
High
L
Low
V
Valid
X
Unknown, changing, or don’t care level
Z
High impedance
general notes on timing parameters
All output signals from the 240x devices (including CLKOUT) are derived from an internal clock such that all
output transitions for a given half-cycle occur with a minimum of skewing relative to each other.
The signal combinations shown in the following timing diagrams may not necessarily represent actual cycles.
For actual cycle examples, refer to the appropriate cycle description section of this data sheet.
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
67