Timing Parameter Symbology - Texas Instruments TMS320C6722 User Manual

Floating-point digital signal processors
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TMS320C6727, TMS320C6726, TMS320C6722
Floating-Point Digital Signal Processors
SPRS268E – MAY 2005 – REVISED JANUARY 2007

4.6 Timing Parameter Symbology

Timing parameter symbols used in the timing requirements and switching characteristics tables 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:
Lowercase subscripts and their meanings:
a
access time
c
cycle time (period)
d
delay time
dis
disable time
en
enable time
f
fall time
h
hold time
r
rise time
su
setup time
t
transition time
v
valid time
w
pulse duration (width)
X
Unknown, changing, or don't care level
36
Peripheral and Electrical Specifications
Letters and symbols and their meanings:
H
High
L
Low
V
Valid
Z
High impedance
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