參數(shù)資料
型號: TMSC6701
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: FLOATING POINT DIGITAL SIGNAL PROCESSOR
中文描述: 浮點(diǎn)數(shù)字信號處理器
文件頁數(shù): 29/64頁
文件大小: 862K
代理商: TMSC6701
SPRS067E – MAY 1998 – REVISED MAY 2000
29
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
INPUT AND OUTPUT CLOCKS
timing requirements for CLKIN (’C6701-150, -167 devices only)
(see Figure 8)
’C6701-150
’C6701-167
NO.
CLKMODE = x4
MIN
CLKMODE = x1
MIN
CLKMODE = x4
MIN
CLKMODE = x1
MIN
UNIT
MAX
MAX
MAX
MAX
1
tc(CLKIN)
Cycle time, CLKIN
26.7
6.7
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.
timing requirements for CLKIN (’C6701-120 device only)
(see Figure 8)
’C6701-120
NO.
CLKMODE = x4
MIN
CLKMODE = x1
MIN
UNIT
MAX
MAX
1
tc(CLKIN)
tw(CLKINH)
tw(CLKINL)
tt(CLKIN)
Cycle time, CLKIN
33.3
8.3
ns
2
Pulse duration, CLKIN high
0.4C
0.45C
ns
3
Pulse duration, CLKIN low
0.4C
0.45C
ns
4
Transition time, CLKIN
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.
CLKIN
1
2
3
4
4
Figure 8. CLKIN Timings
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