AD7779 datasheet(69/97 Pages) AD

69 / 97 page

Data Sheet

AD7779

Rev. 0 | Page 69 of 97

GENERAL USER CONFIGURATION 3 REGISTER

Address: 0x013, Reset: 0x80, Name: GENERAL_USER_CONFIG_3

Dis able deglitching of CONVST pin

11: No deglitch circuit.

10: CONVST_SAR Deglitch 1.5 MCLK.

01: Res erved.

00: Res erved.

Dis ables the clock qualifier check

if the user requires to us e an MCLK

s ignal < 265kHz.

Enable to SPI s lave m ode to read

back ADC on SDO

[7:6] CONVST_DEGLITCH_DIS (R/W)

[0] CLK_QUAL_DIS (R/W)

[5] RESERVED

[1] RESERVED

[4] SPI_SLAVE_MODE_EN (R/W)

[3:2] RESERVED

Table 63. Bit descriptions for GENERAL_USER_CONFIG_3

Bits

Bit Name

Settings

Description

Reset

Access

[7:6]

CONVST_DEGLITCH_DIS

Disable deglitching of CONVST_SAR pin

0x2

R/W

Reserved.

CONVST_SAR Deglitch 1.5 MCLK.

No deglitch circuit.

RESERVED

Reserved.

0x0

R/W

SPI_SLAVE_MODE_EN

Enable to SPI slave mode to read back ADC on SDO

0x0

R/W

[3:2]

RESERVED

Reserved.

0x0

R/W

RESERVED

Reserved.

0x0

R/W

CLK_QUAL_DIS

Disables the clock qualifier check if the user requires to use an MCLK

signal <265 kHz.

0x0

R/W

DATA OUTPUT FORMAT REGISTER

Address: 0x014, Reset: 0x20, Name: DOUT_FORMAT

Data out format

11: 1 DOUT Lines.

10: 1 DOUT Lines.

01: 2 DOUT Lines.

00: 4 DOUT Lines.

Dout header format

1: CRC Header.

0: Status Header.

Divide MCLK

111: Divide by 128.

110: Divide by 64.

101: Divide by 32.

100: Divide by 16.

011: Divide by 8.

010: Divide by 4.

001: Divide by 2.

000: Divide by 1.

[7:6] DOUT_FORMAT (R/W)

[0] RESERVED

[5] DOUT_HEADER_FORMAT (R/W)

[3:1] DCLK_CLK_DIV (R/W)

[4] RESERVED

Table 64. Bit Descriptions for DOUT_FORMAT

Bits

Bit Name

Settings

Description

Reset

Access

[7:6]

DOUT_FORMAT

Data Out Format.

0x0

R/W

4 DOUT lines

2 DOUT lines

1 DOUT lines

AD7779 Datasheet(PDF) 69 Page - Analog Devices

AD7779 Datasheet(HTML) 69 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 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97

Datasheet Download

Link URL