ADA4255ACPZ-R7 datasheet(57/64 Pages) AD

57 / 64 page

Data Sheet

ADA4255

analog.com

Rev. 0 | 57 of 64

SPECIAL FUNCTION CONFIGURATION

Table 26. SF_CFG Register Details (Register 0x0C)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Bit Name

Reserved

INT_CLK_OUT

EXT_CLK_IN

FAULT_INT_OUT

CAL_BUSY_OUT

EXT_MUX[1:0]

Access

Reserved

R/W

Reset

Reserved

Bit 5, INT_CLK_OUT—Internal Oscillator

Output

When GPIO4 is configured as an output via GPIO_DIR and

INT_CLK_OUT is set to 1, one of the internal clocks is output

to GPIO4. The CLK_OUT_SEL bit in the SYNC_CFG register

determines which internal clock is on GPIO4.

Bit 4, EXT_CLK_IN—External Oscillator Input

When GPIO4 is configured as an input via GPIO_DIR and

EXT_CLK_IN is set to 1, an external clock can be provided via

GPIO4. If this clock frequency is not 1 MHz, the on-chip clock

divider must be used to divide the clock via the SYNC[2:0] bits. The

default setting for the internal clock divider is 16. The clock must

always be present and have a 50% duty cycle to ensure charge

pump operation.

Bit 3, FAULT_INT_OUT—Fault Interrupt Output

When GPIO3 is configured as an output via GPIO_DIR and

FAULT_INT_OUT is set to 1, the value in the FAULT_INT bit

(Register ANALOG_ERR) appears on GPIO3.

Bit 2, CAL_BUSY_OUT—Calibration Busy

Output

When GPIO2 is configured as an output via GPIO_DIR and

CAL_BUSY_OUT is set to 1, the value in the CAL_BUSY bit

(Register DIGITAL_ERR) appears on GPIO2.

Bits[1:0], EXT_MUX_EN[1:0]—Enable External

Multiplexer Control

Each bit in the EXT_MUX_EN[1:0] bit range enables GPIO1 and/or

GPIO0 to be controlled via the EXT_MUX bits in the GAIN_MUX

ADA4255ACPZ-R7 データシート(PDF) 57 Page - Analog Devices

ADA4255ACPZ-R7 データシート(HTML) 57 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

データシートダウンロード

リンク URL

ADA4255ACPZ-R7 データシート(PDF) 57 Page - Analog Devices

ADA4255ACPZ-R7 データシート(HTML) 57 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

データシート ダウンロード

リンク URL

データシートダウンロード