Datasheet

TMS570LS20216, TMS570LS20206, TMS570LS10216
TMS570LS10206, TMS570LS10116, TMS570LS10106
www.ti.com SPNS141F–AUGUST 2010– REVISED JULY 2011
7.14 EMIF Timings
Table 7-19. EMIF Read/Write Mode Switching Characteristics
(1)(2)
NO Parameter Description MIN MAX Unit
Reads and Writes
1 t
d(TURNAROUND)
Turn around time (TA + 1) * E - (TA + 1) * E - ns
t
r(CS)
- 2 t
r(CS)
+ 3
Reads
2 t
c(EMRCYCLE)
EMIF read cycle time (RS + RST + (RS + RST + ns
RH + TA +4) * RH + TA +4) *
E - t
f(CS)
- 3 E - t
f(CS)
+ 3
3 t
su(EMCSL-EMOEL)
Output setup time, EMIFCS[3:0] low to EMIFOE (RS +1) * E - (RS +1) * E - ns
low (SS=0) t
f(CS)
+ t
f(OE)
- 5 t
f(CS)
+ t
f(OE)
+ 5
Output setup time, EMIFCS[3:0] low to EMIFOE - t
f(CS)
+ t
f(OE)
- - t
f(CS)
+ t
f(OE)
+ ns
low (SS=1) 5 5
4 t
h(EMOEH-EMCSH)
Output hold time, EMIFOE high to EMIFCS[3:0] (RH +1) * E - (RH +1) * E - ns
high (SS=0) t
r(OE)
+ t
r(CS)
- 4 t
r(OE)
+ t
r(CS)
+ 6
Output hold time, EMIFOE high to EMIFCS[3:0] - t
r(OE)
+ t
r(CS)
- - t
r(OE)
+ t
r(CS)
+ ns
high (SS=1) 4 6
5 t
su(EMBAV-EMOEL)
Output setup time, EMIFBADD[1:0] valid to (RS +1) * E - (RS +1) * E - ns
EMIFOE low t
rf(AD)
+ t
f(OE)
- 5 t
rf(AD)
+ t
f(OE)
+
5
6 t
h(EMOEH-EMBAIV)
Output hold time, EMIFOE high to (RH +1) * E - (RH +1) * E - ns
EMIFBADD[1:0] invalid t
r(OE)
- 5 t
r(OE)
+ 5
7 t
su(EMAV-EMOEL)
Output setup time, EMIFADD[21:0] valid to (RS +1) * E - (RS +1) * E - ns
EMIFOE low t
rf(AD)
+ t
f(OE)
- 6 t
rf(AD)
+ t
f(OE)
+
6
8 t
h(EMOEH-EMAIV)
Output hold time, EMIFOE high to EMIFADD[21:0] (RH +1) * E - (RH +1) * E - ns
invalid t
r(OE)
- 5 t
r(OE)
+ 6
9 t
w(EMOEL)
EMIFOE active low width (RST +1) * E - (RST +1) * E - ns
t
f(OE)
- 1 t
f(OE)
+ 0
10 t
su(EMDV-EMOEH)
Setup time, EMIFD[15:0] valid before EMIFOE t
r(OE)
+ 9 ns
high
11 t
h(EMOEH-EMDV)
Hold time, EMIFD[15:0] valid after EMIFOE high - t
r(OE)
- 3
Writes
12 t
c(EMWCYCLE)
EMIF write cycle time (WS + WST + (WS + WST + ns
WH + TA +4) * WH + TA +4) *
E - t
f(CS)
- 3 E - t
f(CS)
+ 2
13 t
su(EMCSL-EMWEL)
Output setup time, EMIFCS[3:0] low to EMIFWE (WS +1) * E - (WS +1) * E - ns
low (SS=0) t
f(CS)
+ t
f(WE)
- 5 t
f(CS)
+ t
f(WE)
+ 5
Output setup time, EMIFCS[3:0] low to EMIFWE - t
f(CS)
+ t
f(WE)
- - t
f(CS)
+ t
f(WE)
+ ns
low (SS=1) 5 5
14 t
h(EMWEH-EMCSH)
Output hold time, EMIFWE high to EMIFCS[3:0] (WH +1) * E - (WH +1) * E - ns
high (SS=0) t
r(WE)
+ t
r(CS)
- 4 t
r(WE)
+ t
r(CS)
+
5
Output hold time, EMIFWE high to EMIFCS[3:0] - t
r(WE)
+ t
r(CS)
- - t
r(WE)
+ t
r(CS)
+ ns
high (SS=1 4 5
15 t
su(EMBAV-EMWEL)
Output setup time, EMIFBADD[1:0] valid to (WS +1) * E - (WS +1) * E - ns
EMIFWE low t
rf(AD)
+ t
f(WE)
- 5 t
rf(AD)
+ t
f(WE)
+
5
16 t
h(EMWEH-EMBAIV)
Output hold time, EMIFWE high to EMBADD[1:0] (WH +1) * E - (WH +1) * E - ns
invalid t
r(WE)
- 5 t
r(WE)
+ 5
17 t
su(EMAV-EMWEL)
Output setup time, EMIFADD[21:0] valid to (WS +1) * E - (WS +1) * E - ns
EMIFWE low t
rf(AD)
+ t
f(WE)
- 6 t
rf(AD)
+ t
f(WE)
+
6
(1) RS = Read setup, RST = Read Strobe, RH = Read Hold, WS = Write Setup, WST = Write Strobe, WH = Write Hold, TA = Turn Around,
SS= Strobe Select Mode
(2) E = VCLK period in ns.
Copyright © 2010–2011, Texas Instruments Incorporated Peripheral and Electrical Specifications 87
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