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AD9725 Datenblatt(PDF) 9 Page - Analog Devices

Teilenummer AD9725
Bauteilbeschribung  14-Bit, 600 MSPS D/A Converter
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Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9725 Datenblatt(HTML) 9 Page - Analog Devices

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Preliminary Technical Data
AD9725
Rev. PrA | Page 9 of 16
SERIAL PORT INTERFACE REGISTER MAPS
Table 5. Mode Control via SPI Port
Address
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
COMMS
00
SDIODIR
DATADIR
SWRST
SLEEP
PDN
RESERVED1
RESERVED
EXREF
01
RESERVED
DATA
02
DATAFMT
DDR
DCLKPOLI
DCLKPOLO
DISDCLKO
SYNCMAN
SYNCUPD
SYNCALRM
03
RESERVED
04
RESERVED
05
RESERVED
06
RESERVED
07
RESERVED
08
RESERVED
09
RESERVED
0A
RESERVED
0B
RESERVED
0C
RESERVED
VERSION
0D
RESERVED
RESERVED
RESERVED
RESERVED
VERSION[3]
VERSION[2]
VERSION[1]
VERSION[0]
CALMEMCK
0E
RESERVED
RESERVED
CALMEM[1]
CALMEM[0]
RESERVED
CALCKDIV[2]
CALCKDIV[1]
CALCKDIV[0]
MEMRDWR
0F
CALSTAT
CALEN
XFERSTAT
XFEREN
SMEMWR
SMEMRD
FMEMRD
UNCAL
MEMADDR
10
MEMADDR[7]
MEMADDR[6]
MEMADDR[5]
MEMADDR[4]
MEMADDR[3]
MEMADDR[2]
MEMADDR[1]
MEMADDR[0]
MEMDATA
11
RESERVED
RESERVED
MEMDATA[5]
MEMDATA[4]
MEMDATA[3]
MEMDATA[2]
MEMDATA[1]
MEMDATA[0]
1 Reserved registers should be set to Logic 0 (low state) during a write operation, and masked (ignored) during a read operation.
Table 6. SPI Register Definitions
Register
Bit
Direction
Default
Description
COMMCTRL(00)
SDIODIR
7
1
0
0: SDIO pin configured for input only during data
transfer
1: SDIO pin configured for input or output during data
transfer
DATADIR
6
1
0
0: Serial data uses MSB first format
1: Serial data uses LSB first format
SWRST
5
1
0
1: Default all serial register bits, except address 00h
SLEEP
4
1
0
1: DAC output current off
PDN
3
1
0
1: All analog and digital circuitry, except serial
interface, off
RESERVED
2
0
0
RESERVED
RESERVED
1
0
0
RESERVED
EXREF
0
1
0
0: Internal bandgap reference
DATACTRL(02)
DATAFMT
7
1
0
0: Twos complement input data format
1: Unsigned binary input data format
DDR
6
1
0
0: Single Data Rate mode
1: Double Data Rate mode
DCLKPOLI
5
1
0
0: Data latched on DATACLKIN rising edge
1: Data latched on DATACLKIN falling edge
DCLKPOLO
4
1
0
0: Data latched on DATACLKOUT rising edge
1: Data latched on DATACLKOUT falling edge
DISDCLKO
3
1
0
0: DATACLKOUT enabled
1: DATACLKOUT disabled
SYNCMAN
2
1
0
0: Automatic synchronization initiated following a
SYNCALRM
1: Manual synchronization needed following a
SYNCALRM


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