參數(shù)資料
型號(hào)： SMJ320C6701GLPW16
廠商： TEXAS INSTRUMENTS INC
元件分類： 數(shù)字信號(hào)處理
英文描述： 32-BIT, 166.66 MHz, OTHER DSP, CBGA429
封裝： 27 X 27 MM, CERAMIC, MO-156, BGA-429
文件頁(yè)數(shù)： 24/63頁(yè)
文件大?。?/td> 909K
代理商： SMJ320C6701GLPW16
SMJ320C6701
FLOATINGPOINT DIGITAL SIGNAL PROCESSOR
SGUS060 DECEMBER 2007
30
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
INPUT AND OUTPUT CLOCKS
timing requirements for CLKIN (see Figure 8)
’C6701-14
’C6701-16
NO.
CLKMODE = x4
CLKMODE = x1
CLKMODE = x4
CLKMODE = x1
UNIT
NO.
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
1
tc(CLKIN)
Cycle time, CLKIN
28.4
7.1
24
6
ns
2
tw(CLKINH)
Pulse duration,
CLKIN high
*0.4C
*0.45C
*0.4C
*0.45C
ns
3
tw(CLKINL)
Pulse duration,
CLKIN low
*0.4C
*0.45C
*0.4C
*0.45C
ns
4
tt(CLKIN)
Transition time, CLKIN
*5
*0.6
*5
*0.6
ns
The reference points for the rise and fall transitions are measured at 20% and 80%, respectively, of VIH.
C = CLKIN cycle time in ns. For example, when CLKIN frequency is 10 MHz, use C = 100 ns.
*This parameter is not tested.
CLKIN
1
2
3
4
Figure 8. CLKIN Timings
switching characteristics for CLKOUT1§ (see Figure 9)
NO.
PARAMETER
’C6701-14
’C6701-16
UNIT
NO.
PARAMETER
CLKMODE = x4
CLKMODE = x1
UNIT
MIN
MAX
MIN
MAX
1
tc(CKO1)
Cycle time, CLKOUT1
*P 0.7
*P + 0.7
*P 0.7
*P + 0.7
ns
2
tw(CKO1H)
Pulse duration, CLKOUT1 high
*(P/2) 0.5
*(P/2) + 0.5
*PH 0.5
*PH + 0.5
ns
3
tw(CKO1L)
Pulse duration, CLKOUT1 low
*(P/2) 0.5
*(P/2) + 0.5
*PL 0.5
*PL + 0.5
ns
4
tt(CKO1)
Transition time, CLKOUT1
*0.6
ns
P = 1/CPU clock frequency in nanoseconds (ns).
§ PH is the high period of CLKIN in ns and PL is the low period of CLKIN in ns.
*This parameter is not tested.
CLKOUT1
1
3
4
2
Figure 9. CLKOUT1 Timings
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