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TMS320C80GF Datasheet(PDF) 145 Page - Texas Instruments

Part # TMS320C80GF
Description  DIGITAL SIGNAL PROCESSOR
PDF  171 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TMS320C80GF Datasheet(HTML) 145 Page - Texas Instruments

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TMS320C80
DIGITAL SIGNAL PROCESSOR
SPRS023B – JULY 1994 – REVISED OCTOBER 1997
142
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
CLKIN timing requirements (see Figure 118)
NO
’C80-40
’C80-50
’C80-60
UNIT
NO.
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
1
tc(CKI)
Period of CLKIN (tH)
12.5
10
8.3
ns
2
tw(CKIH)
Pulse duration of CLKIN high
4.8
4.2
3.9
ns
3
tw(CKIL)
Pulse duration of CLKIN low
4.8
4.2
3.9
ns
4
tt(CKI)
Transition time of CLKIN†
1.5
1.5
1.5
ns
† This parameter is verified by computer simulation and is not tested.
CLKIN
2
3
4
4
1
Figure 118. CLKIN Timing
local-bus switching characteristics over full operating range: CLKOUT‡(see Figure 119)
NO
PARAMETER
’C80-40
’C80-50
’C80-60
UNIT
NO.
PARAMETER
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
5
tc(CKO)
Period of CLKOUT
2tc(CKI)§
2tc(CKI) §
2tc(CKI) §
ns
6
tw(CKOH)
Pulse duration of CLKOUT high
tH – 5.5
tH – 4.5
tH – 3.7
ns
7
tw(CKOL)
Pulse duration of CLKOUT low
tH – 5.5
tH – 4.5
tH – 3.7
ns
8
tt(CKO)
Transition time of CLKOUT
2¶
2¶
2¶
ns
‡ The CLKOUT output has twice the period of CLKIN. No propagation delay or phase relationship to CLKIN is assured. Each state of a memory
access begins on the falling edge of CLKOUT.
§ This is a functional minimum and is not tested. This parameter may also be specified as 2tH.
¶ This parameter is verified by computer simulation and is not tested.
CLKOUT
tH
tH
tH
tH
5
6
8
8
7
Figure 119. CLKOUT Timing



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