参数资料
型号: TMS320C6415TBZLZ8
厂商: TEXAS INSTRUMENTS INC
元件分类: 数字信号处理
英文描述: 64-BIT, 75.18 MHz, OTHER DSP, PBGA532
封装: 23 X 23 MM, 0.80 MM PITCH, PLASTIC, BGA-532
文件页数: 38/142页
文件大小: 2106K
代理商: TMS320C6415TBZLZ8
TMS320C6414T, TMS320C6415T, TMS320C6416T
FIXEDPOINT DIGITAL SIGNAL PROCESSORS
SPRS226M NOVEMBER 2003 REVISED APRIL 2009
132
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
GENERAL-PURPOSE INPUT/OUTPUT (GPIO) PORT TIMING
timing requirements for GPIO inputs (see Figure 62)
NO.
600
720
850
1G
UNIT
MIN
MAX
1
tw(GPIH)
Pulse duration, GPIx high
8P
ns
2
tw(GPIL)
Pulse duration, GPIx low
8P
ns
P = 1/CPU clock frequency in ns. For example, when running parts at 720 MHz, use P = 1.39 ns.
The pulse width given is sufficient to generate a CPU interrupt or an EDMA event. However, if a user wants to have the DSP recognize the GPIx
changes through software polling of the GPIO register, the GPIx duration must be extended to at least 12P to allow the DSP enough time to access
the GPIO register through the CFGBUS.
switching characteristics over recommended operating conditions for GPIO outputs
(see Figure 62)
NO.
PARAMETER
600
720
850
1G
UNIT
MIN
MAX
3
tw(GPOH)
Pulse duration, GPOx high
24P 8§
ns
4
tw(GPOL)
Pulse duration, GPOx low
24P 8§
ns
P = 1/CPU clock frequency in ns. For example, when running parts at 720 MHz, use P = 1.39 ns.
§ This parameter value should not be used as a maximum performance specification. Actual performance of back-to-back accesses of the GPIO
is dependent upon internal bus activity.
GPIx
GPOx
4
3
2
1
Figure 62. GPIO Port Timing
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