Datasheet

DIN
t
d(XCOHL-XRDL)
t
d(XCOH-XA)
t
d(XCOH-XZCSL)
t
d(XCOHL-XRDH)
t
h(XD)XRD
t
d(XCOHL-XZCSH)
XCLKOUT = XTIMCLK
XCLKOUT = 1/2 XTIMCLK
XZCS0AND1 XZCS2
XZCS6AND7
, ,
XA[0:18]
XRD
XWE
XR/W
XD[0:15]
t
su(XD)XRD
t
a(A)
t
a(XRD)
XREADY
Lead
Active
Trail
TMS320F2810, TMS320F2811, TMS320F2812
TMS320C2810, TMS320C2811, TMS320C2812
SPRS174T –APRIL 2001–REVISED MAY 2012 www.ti.com
A. All XINTF accesses (lead period) begin on the rising edge of XCLKOUT. When necessary, the device will insert an
alignment cycle before an access to meet this requirement.
B. During alignment cycles, all signals will transition to their inactive state.
C. For USEREADY = 0, the external XREADY input signal is ignored.
D. XA[0:18] will hold the last address put on the bus during inactive cycles, including alignment cycles.
Figure 6-31. Example Read Access
XTIMING register parameters used for this example:
XRDLEAD XRDACTIVE XRDTRAIL USEREADY X2TIMING XWRLEAD XWRACTIVE XWRTRAIL READYMODE
≥ 1 ≥ 0 ≥ 0 0 0 N/A
(1)
N/A
(1)
N/A
(1)
N/A
(1)
(1) N/A = “Don’t care” for this example
132 Electrical Specifications Copyright © 2001–2012, Texas Instruments Incorporated
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