LTC6946 datasheet(34/54 Pages) LINER

34 / 54 page

LTC2000A

2000afb

For more information www.linear.com/LTC2000A

SPI REGISTER SUMMARY

ADDRESS

BIT

NAME

DESCRIPTION

RESET

VALUE

R/W

0x00

[7:0]

Reserved

0x01

SW_RST

Software Reset. SW_RST = 1 resets all registers.

R/W

DAC_PD

DAC Power Down. DAC_PD = 1 to power down DAC core.

R/W

FULL_PD

Full Power Down. FULL_PD = 1 to power down LTC2000A.

R/W

Reserved

[5:4]

DAC_RES

DAC Resolution Indicator. DAC_RES = 00 for LTC2000A-16. DAC_RES = 01 for LTC2000A-14.

DAC_RES = 11 for LTC2000A-11. Note that for PD = GND or FULL_PD = 1, DAC_RES = 00.

DAC_RES is read only.

00-16b

01-14b

11-11b

[7:6]

Reserved

0x02

CK_PD

CKP/N Clock Receiver Power Down. CK_PD = 1 disables

R/W

CK_OK

CKP/N Clock Present Indicator. CK_OK = 1 clock present

[3:2]

Reserved

DCKO_DIS

DCKOP/N Output Disable. DCKO_DIS = 1 disables

R/W

DCKO_DIV

DCKOP/N Divide Select. (0 = fDAC/4, 1 = fDAC/2).

R/W

DCKO_ISEL DCKOP/N Output Current Select. (0=3.5mA, 1 = 7mA)

R/W

DCKO_TRM DCKOP/N Internal Termination On. DCKO_TRM = 1 enables internal 100 termination

R/W

0x03

DCKI_EN

DCKIP/N Clock Receiver Enable. DCKI_EN = 1 enables.

R/W

DCKI_OK

DCKIP/N Clock Present Indicator. DCKI_OK = 1 indicates clock present

DCKI_Q

DCKIP/N Quadrature Phase Select. (0 = In Phase, 1 = Quadrature)

R/W

Reserved

[6:4]

DCKI_TADJ DCKIP/N Delay Adjust. (See Table 4)

000

R/W

Reserved

0x04

DA_EN

Port A LVDS Receiver Enable. DA_EN = 1 enables

R/W

DB_EN

Port B LVDS Receiver Enable. DB_EN = 1 enables

R/W

DATA_SP

Port Mode Select. (0 = Dual port, 1 = Single port)

R/W

DATA_EN

DAC Data Enable. DATA_EN = 0 forces DAC output to mid-scale.

R/W

[7:4]

Reserved

0x05

[1:0]

SYNC_PS

Clock Synchronizer Phase Select.

R/W

SYNC_MSYN Clock Synchronizer Manual Mode Select.

SYNC_MSYN = 0: SYNC_PS is set automatically.

SYNC_MSYN = 1: SYNC_PS is set by the user.

R/W

[7:3]

Reserved

0x06

[7:0]

SYNC_PH

Clock Phase Comparator Outputs. (See Table 6)

0x00

0x07

LIN_DIS

Dynamic Linearization Disable. LIN_DIS = 1 disables.

R/W

[3:1]

LIN_GN

Dynamic Linearization Gain Select. (See Table 7)

000

R/W

[7:4]

Reserved

0x08

[3:0]

LIN_VMX

Dynamic Linearization Max IOUTP/N Voltage Select. (See Table 7)

1000

R/W

[7:4]

LIN_VMN

Dynamic Linearization Min IOUTP/N Voltage Select. (See Table 7)

0000

R/W

Table 11. SPI Register List

LTC6946 датащи(PDF) 34 Page - Linear Technology

LTC6946 датащи(HTML) 34 Page - Linear Technology

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

датащи скачать

ссылки URL