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TMS320C6713B_17 Datasheet, PDF (105/154 Pages) Texas Instruments – FLOATING-POINT DIGITAL SIGNAL PROCESSOR | |||
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TMS320C6713B
FLOATINGÄPOINT DIGITAL SIGNAL PROCESSOR
SPRS294B â OCTOBER 2005 â REVISED JUNE 2006
INPUT AND OUTPUT CLOCKS
timing requirements for CLKIN for PYP-200 and GDP/ZDP-225â â¡Â§ (see Figure 31)
PYPâ200
GDP/ZDPâ225
PLL MODE
BYPASS MODE
PLL MODE
BYPASS MODE
NO.
(PLLEN = 1)
(PLLEN = 0)
(PLLEN = 1)
(PLLEN = 0)
MIN MAX
MIN MAX
MIN MAX
MIN MAX
1 tc(CLKIN) Cycle time, CLKIN
5 83.3
6.7
4.4 83.3
6.7
2 tw(CLKINH) Pulse duration, CLKIN high 0.4C
0.4C
0.4C
0.4C
3 tw(CLKINL) Pulse duration, CLKIN low
0.4C
0.4C
0.4C
0.4C
4 tt(CLKIN) Transition time, CLKIN
5
5
5
5
â The reference points for the rise and fall transitions are measured at VIL MAX and VIH MIN.
â¡ C = CLKIN cycle time in nanoseconds (ns). For example, when CLKIN frequency is 40 MHz, use C = 25 ns.
§ See the PLL and PLL controller section of this data sheet.
UNIT
ns
ns
ns
ns
timing requirements for CLKIN for PYP-225 and GDP/ZDP-300 â â¡Â§ (see Figure 31)
PYPâ225
GDP/ZDPâ300
PLL MODE
BYPASS MODE
PLL MODE
BYPASS MODE
NO.
(PLLEN = 1)
(PLLEN = 0)
(PLLEN = 1)
(PLLEN = 0)
MIN MAX
MIN MAX
MIN MAX
MIN MAX
1 tc(CLKIN) Cycle time, CLKIN
4.4 83.3
6.7
4 83.3
6.7
2 tw(CLKINH) Pulse duration, CLKIN high 0.4C
0.4C
0.4C
0.4C
3 tw(CLKINL) Pulse duration, CLKIN low
0.4C
0.4C
0.4C
0.4C
4 tt(CLKIN) Transition time, CLKIN
5
5
5
5
â The reference points for the rise and fall transitions are measured at VIL MAX and VIH MIN.
â¡ C = CLKIN cycle time in nanoseconds (ns). For example, when CLKIN frequency is 40 MHz, use C = 25 ns.
§ See the PLL and PLL controller section of this data sheet.
UNIT
ns
ns
ns
ns
timing requirements for CLKIN for PYPA-167, GDPA/ZDPA-200 and PYPA-200â â¡Â§ (see Figure 31)
PYPAâ167
GDPA/ZDPAâ200 AND PYPAâ200
PLL MODE
BYPASS MODE
PLL MODE
BYPASS MODE
NO.
(PLLEN = 1)
(PLLEN = 0)
(PLLEN = 1)
(PLLEN = 0)
MIN MAX
MIN MAX
MIN MAX
MIN MAX
1 tc(CLKIN) Cycle time, CLKIN
6 83.3
6.7
5 83.3
6.7
2 tw(CLKINH) Pulse duration, CLKIN high 0.4C
0.4C
0.4C
0.4C
3 tw(CLKINL) Pulse duration, CLKIN low
0.4C
0.4C
0.4C
0.4C
4 tt(CLKIN) Transition time, CLKIN
5
5
5
5
â The reference points for the rise and fall transitions are measured at VIL MAX and VIH MIN.
â¡ C = CLKIN cycle time in nanoseconds (ns). For example, when CLKIN frequency is 40 MHz, use C = 25 ns.
§ See the PLL and PLL controller section of this data sheet.
UNIT
ns
ns
ns
ns
CLKIN
1
4
2
3
4
Figure 31. CLKIN Timings
⢠POST OFFICE BOX 1443 HOUSTON, TEXAS 77251â1443
105
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