SM320C32-EP Datasheet, PDF (30/44 Pages) Texas Instruments – DIGITAL SIGNAL PROCESSOR

SM320C32ĆEP
DIGITAL SIGNAL PROCESSOR
SGUS038 − AUGUST 2002
timing of XF changing from output to input mode (see Figure 24)
NO.
46 th(H3H-XF01) Hold time, XF after H3 high
47 tsu(XF)
Setup time, XF before H1 low
48 th(XF)
Hold time, XF after H1 low
* This parameter is not production tested.
320C32-50
MIN MAX
12*
9
0
320C32-60
UNIT
MIN MAX
11* ns
8
ns
0
ns
Execute
Load of IOF
H3
Buffers Go
from Ouput
to Input
Synchronizer
Delay
Value on Pin
Seen in IOF
H1
I / OXFx Bit†
XFx
Output
47
48
46
INXFx Bit†
Data
Sampled
Data
Seen
NOTE A: I / OXFx represents either bit 1 or bit 5 of the IOF register, and INXFx represents either bit 3 or bit 7 of the IOF register.
Figure 24. Change of XF From Output to Input Mode
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