SMJ34020A_06 Datasheet, PDF (68/97 Pages) Texas Instruments – GRAPHICS SYSTEM PROCESSOR

SMJ34020A
GRAPHICS SYSTEM PROCESSOR
SGUS011D − APRIL 1991 − REVISED SEPTEMBER 2004
timing parameter symbology
Timing parameter symbols used herein were created in accordance with JEDEC Standard 100. In order to
shorten the symbols, some of the pin names and other related terminology have been abbreviated as follows:
A
HA5−HA31 and HBS0 −HBS3
AD
LAD0−LAD31 and RCA0 −RCA12
AL
ALTCH
BC
Any of the bus control input signals
(LRDY, PGMD, SIZE16, or BUSFLT)
CE
CAS0 − CAS3
CK
LCLK1 and LCLK2
CK1 LCLK1
CK2 LCLK2
CKI
CLKIN
CM
CAMD
CS
HCS
CT
Any of the bus control output signals
(ALTCH, CAS0 −CAS3, RAS, WE,
TR / QE, HOE, or HDST)
DI
DDIN
DO
DDOUT
EM
EMU0, EMU1, EMU2
HI
HINT
HS
HSYNC, VSYNC, CSYNC / HBLNK, or
CBLNK/ VBLNK
GI
GI
LA
LAD0 − LAD31
LINT
OE
RC
RD
RE
RQ
RS
RY
S
SC
SCK
SF
LINT1, LINT2
HOE
RCA0 − RCA12
HREAD
RAS
R0 or R1
RESET
HRDY
HSYNC, VSYNC, or CSYNC
EMU3
SCLK
SF
SG
SGV
ST
TR
VCK
WR
Any output signal
Signal valid
HDST
TR / QE
VCLK
HWRITE
Lowercase subscripts and their meaning are:
a access time
c cycle time (period)
d delay time
h hold time
su setup time
t transition time
w pulse duration (width)
The following letters and symbols and their meaning are:
H High level
L Low level
V Valid level
X Unknown, changing or don’t care level
Z High-impedance state of 3-state output
68
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443