參數(shù)資料
型號(hào): TMS320DM355_07
廠商: Texas Instruments, Inc.
英文描述: Digital Media System-on-Chip (DMSoC)
中文描述: 數(shù)字媒體系統(tǒng)芯片(DMSoC)
文件頁數(shù): 105/158頁
文件大?。?/td> 1319K
代理商: TMS320DM355_07
www.ti.com
P
GPIx
GPOx
4
3
2
1
5.6.2
GPIO Peripheral External Interrupts Electrical Data/Timing
EXT_INTx
2
1
TMS320DM355
Digital Media System-on-Chip (DMSoC)
SPRS463B–SEPTEMBER 2007–REVISED OCTOBER 2007
Figure 5-12. GPIO Port Timing
Table 5-12. Timing Requirements for External Interrupts/EDMA Events
(1)
(see
Figure 5-13
)
DM355
MIN
52
52
NO.
UNIT
MAX
1
2
t
w(ILOW)
t
w(IHIGH)
Width of the external interrupt pulse low
Width of the external interrupt pulse high
ns
ns
(1)
The pulse width given is sufficient to generate an interrupt or an EDMA event. However, if a user wants to have DM355 to recognize the
GPIO changes through software polling of the GPIO register, the GPIO duration must be extended to allow DM355 enough time to
access the GPIO register through the internal bus.
Figure 5-13. GPIO External Interrupt Timing
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DM355 Peripheral Information and Electrical Specifications
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