AD5392 Analog Devices, AD5392 Datasheet - Page 35

• Manufacturer Part Number: AD5392
• Description: 8-Channel 14-Bit Single-Supply Voltage-Output DAC
• Manufacturer: Analog Devices

Specifications of AD5392

• Resolution (bits): 14bit
• Dac Update Rate: 125kSPS
• Dac Settling Time: 8µs
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Voltage Out
• Dac Input Format: I2C/Ser 2-wire,Ser,SPI

AD539x to PIC16C6x/7x
The PIC16C6x/7x synchronous serial port (SSP) is configured
as an SPI master with the clock polarity bit = 0. This is done
by writing to the synchronous serial port control register
(SSPCON)—see the PIC16/17 Microcontroller User Manual.
In Figure 38, I/O port RA1 is used to pulse SYNC and enable
the serial port of the AD539x. This microcontroller transfers
only eight bits of data during each serial transfer operation;
therefore, three consecutive read/write operations are needed,
depending on the mode.
diagram.
AD539x to 8051
The AD539x requires a clock synchronized to the serial data.
The 8051 serial interface must, therefore, be operated in Mode 0.
In this mode, serial data enters and exits through RxD and a
shift clock is output on TxD. Figure 39 shows how the 8051 is
connected to the AD539x. Because the AD539x shifts data out
on the rising edge of the shift clock and latches data in on the
falling edge, the shift clock must be inverted. The AD539x
requires its data with the MSB first. Because the 8051 outputs
the LSB first, the transmit routine must take this into account.
PIC16C6x/7x
Figure 38. AD539x to PIC16C6x/7x Interface
SDO/RC5
SCK/RC3
SDI/RC4
RA1
Figure 38
DV
DD
shows the connection
RESET
SPI/I
SDO
DIN
SCLK
SYNC
AD539x
2
C
Rev. C | Page 35 of 40
AD539x to ADSP2101/ADSP2103
Figure 40 shows a serial interface between the AD539x and
the ADSP2101/ADSP2103. The ADSP2101/ADSP2103 should
be set up to operate in the SPORT transmit alternate framing
mode. The ADSP2101/ADSP2103 SPORT is programmed
through the SPORT control register and should be configured
as follows: internal clock operation, active low framing, and
16-bit word length. Transmission is initiated by writing a word
to the Tx register after the SPORT has been enabled.
Figure 40. AD539x to ADSP2101/ADSP2103 Interface
ADSP2101/
ADSP2103
8xC51
Figure 39. AD539x to 8051 Interface
RxD
P1.1
TxD
SCK
RFS
TFS
DR
DT
AD5390/AD5391/AD5392
DV
DD
DV
DV
DD
DD
SPI/I
RESET
SDO
DIN
SCLK
SYNC
RESET
SPI/I
SDO
DIN
SCLK
SYNC
AD539x
AD539x
2
2
C
C