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CS5535 데이터시트(PDF) 445 Page - National Semiconductor (TI) |
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CS5535 데이터시트(HTML) 445 Page - National Semiconductor (TI) |
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445 / 555 page ![]() Revision 0.8 445 www.national.com GPIO Subsystem Register Descriptions (Continued) 5.16.2.12 GPIO Input Event Count Enable (GPIO[x]_IN_EVNTCNT_EN) These registers control the enabling of the input event counter function for the low (GPIO[15:0]) and high (GPIO[31:16]) banks of GPIOs. If the feature bit is high, the event counter function is enabled on the input. If the feature bit is low, the event counter function is disabled on the input. The reset value forces all the filter functions to be disabled. (These registers use atomic programming, see Section 5.16.1 on page 436 for details.) When the event counter is enabled, the filter must also be enabled (GPIO I/O Offset 28h/A8h). If no filtering is desired, then program the GPIO_FILTER[x]_AMOUNT register to 0. GPIO Low Bank Input Event Count Enable (GPIOL_IN_EVNTCNT_EN) GPIO High Bank Input Event Count Enable (GPIOH_IN_EVNTCNT_EN) GPIO I/O Offset 2Ch Type R/W Reset Value FFFF0000h GPIO I/O Offset ACh Type R/W Reset Value FFFF0000h GPIOL_IN_EVNTCNT_EN Register Map 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 98 7654321 0 GPIOH_IN_EVNTCNT_EN Register Map 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 98 7654321 0 |
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