CS5535 datasheet(460/555 Pages) NSC

460 / 555 page

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460

Revision 0.8

GPIO Subsystem Register Descriptions (Continued)

5.16.3.6

GPIO Event Counter Decrement (GPIO[x]_EVNTCNT_DEC)

There are two 32-bit Event Counter Decrement registers one for the lower bank (GPIO[15:0]) and one for the higher bank

(GPIO[31:16]) of GPIOs.These registers generate one 33 ns wide pulse when written to it, so multiple successive writes

may be performed without waiting for the previous write to ‘complete; in addition, reading these registers always provides

0s.

GPIO Low Bank Event Counter Decrement (GPIOL_EVNTCNT_DEC)

GPIO I/O Offset

F8h

Type

R/W

Reset Value

00000000h

GPIOL_EVNTCNT_DEC Register Map

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9876543210

RSVD

GPIOL_EVNTCNT_DEC Bit Descriptions

Bit

Name

Description

31:16

RSVD

Reserved. Write/read as 0.

ECD15

GPIO15 Event Counter Decrement. Writing this bit high generates a decrement pulse to

the event counter that has been associated with this GPIO. There is no need to write the bit

low again. This bit will always read as low. Event counters are associated with specific

GPIOs via the GPIO_FE[x]_SEL register set.

ECD14

GPIO14 Event Counter Decrement. Same as EDC15 (bit 15)

ECD13

GPIO13 Event Counter Decrement. Same as EDC15 (bit 15)

ECD12

GPIO12 Event Counter Decrement. Same as EDC15 (bit 15).

ECD11

GPIO11 Event Counter Decrement. Same as EDC15 (bit 15).

ECD10

GPIO10 Event Counter Decrement. Same as EDC15 (bit 15).

ECD9

GPIO9 Event Counter Decrement. Same as EDC15 (bit 15).

ECD8

GPIO8 Event Counter Decrement. Same as EDC15 (bit 15).

ECD7

GPIO7 Event Counter Decrement. Same as EDC15 (bit 15).

ECD6

GPIO6 Event Counter Decrement. Same as EDC15 (bit 15).

ECD5

GPIO5 Event Counter Decrement. Same as EDC15 (bit 15).

ECD4

GPIO4 Event Counter Decrement. Same as EDC15 (bit 15).

ECD3

GPIO3 Event Counter Decrement. Same as EDC15 (bit 15).

ECD2

GPIO2 Event Counter Decrement. Same as EDC15 (bit 15).

ECD1

GPIO1 Event Counter Decrement. Same as EDC15 (bit 15).

ECD0

GPIO0 Event Counter Decrement. Same as EDC15 (bit 15).

CS5535 Datasheet(PDF) 460 Page - National Semiconductor (TI)

CS5535 Datasheet(HTML) 460 Page - National Semiconductor (TI)

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