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參數資料
型號: TMX320C6413GTSA500
廠商: Texas Instruments, Inc.
元件分類: 數字信號處理
英文描述: Fixed-Point Digital Signal Processors
中文描述: 定點數字信號處理器
文件頁數: 125/140頁
文件大小: 1958K
代理商: TMX320C6413GTSA500
Multichannel Buffered Serial Port (McBSP) Timing
125
April 2004
Revised May 2005
SPRS247E
7.12
Multichannel Buffered Serial Port (McBSP) Timing
Table 7
26. Timing Requirements for McBSP
(see Figure 7
36)
NO.
400
500
UNIT
MIN
MAX
2
3
t
c(CKRX)
t
w(CKRX)
Cycle time, CLKR/X
Pulse duration, CLKR/X high or CLKR/X low
CLKR/X ext
CLKR/X ext
CLKR int
CLKR ext
CLKR int
CLKR ext
CLKR int
CLKR ext
CLKR int
CLKR ext
CLKX int
CLKX ext
CLKX int
CLKX ext
4P or 6.67
§
0.5t
c(CKRX)
1
9
1.3
6
3
8
0.9
3
3.1
9
1.3
6
3
ns
ns
5
t
su(FRH-CKRL)
Setup time external FSR high before CLKR low
Setup time, external FSR high before CLKR low
ns
6
t
h(CKRL-FRH)
Hold time external FSR high after CLKR low
Hold time, external FSR high after CLKR low
ns
7
t
su(DRV-CKRL)
Setup time DR valid before CLKR low
Setup time, DR valid before CLKR low
ns
8
t
h(CKRL-DRV)
Hold time DR valid after CLKR low
Hold time, DR valid after CLKR low
ns
10
t
su(FXH-CKXL)
Setup time external FSX high before CLKX low
Setup time, external FSX high before CLKX low
ns
11
t
h(CKXL-FXH)
Hold time external FSX high after CLKX low
Hold time, external FSX high after CLKX low
ns
CLKRP = CLKXP = FSRP = FSXP = 0. If polarity of any of the signals is inverted, then the timing references of that signal are also inverted.
P = 1/CPU clock frequency in ns. For example, when running parts at 500 MHz, use P = 2 ns.
§
Use whichever value is greater. Minimum CLKR/X cycle times
must
be met, even when CLKR/X is generated by an internal clock source. The
minimum CLKR/X cycle times are based on internal logic speed; the maximum usable speed may be lower due to EDMA limitations and AC timing
requirements.
This parameter applies to the maximum McBSP frequency. Operate serial clocks (CLKR/X) in the reasonable range of 40/60 duty cycle.
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