AD9865 Analog Devices, AD9865 Datasheet - Page 19

• Manufacturer Part Number: AD9865
• Description: 10-Bit Broadband Modem Mixed Signal Front End (MxFE®)
• Manufacturer: Analog Devices

Specifications of AD9865

• Resolution (bits): 10bit
• # Chan: 1
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 6.3 V p-p,8 mV p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

SERIAL PORT
Table 10. SPI Register Mapping
Address
(Hex)
SPI PORT CONFIGURATION AND SOFTWARE RESET
0x00
POWER CONTROL REGISTERS (via PWR_DWN pin)
0x01
0x02
HALF-DUPLEX POWER CONTROL
0x03
PLL CLOCK MULTIPLIER/SYNTHESIZER CONTROL
0x04
0x05
0x06
Rx PATH CONTROL
0x07
1
Bit
Break-
down
(7)
(6)
(5)
(7)
(6)
(5)
(4)
(3)
(2)
(1)
(0)
(7)
(6)
(5)
(4)
(3)
(2)
(1)
(0)
(7:3)
(2)
(1)
(0)
(5)
(4)
(3:2)
(1:0)
(2)
(1)
(0)
(7:6)
(5)
(4)
(3:2)
(1)
(0)
(5)
(4)
(0)
Description
4-Wire SPI
LSB First
S/W Reset
Clock Syn.
TxDAC/IAMP
Tx Digital
REF
ADC CML
ADC
PGA Bias
RxPGA
CLK Syn.
TxDAC/IAMP
Tx Digital
REF
ADC CML
ADC
PGA Bias
RxPGA
Tx OFF Delay
Rx _TXEN
Tx PWRDN
Rx PWRDN
Duty Cycle Enable
f
PLL Divide-N
PLL Multiplier-M
OSCIN to RXCLK
Invert RXCLK
Disabled RXCLK
CLKOUT2 Divide
CLKOUT2 Invert
CLKOUT2 Disable
CLKOUT1 Divide
CLKOUT1 Invert
CLKOUT1 Disable
Initiate Offset Cal.
Rx Low Power
Rx Filter ON
ADC
from PLL
Width
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
5
1
1
1
1
1
2
2
1
1
1
2
1
1
2
1
1
1
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
0xFF
0
0
00
01
0
0
0
01
0
01
0
0
0
0
1
CONFIG = 0
MODE = 0 (Half-Duplex)
Rev. A | Page 19 of 48
Power-Up Default Value
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0xFF
0
0
00
10*
0
0
0
01
0
0
01
0
0
0
1*
1
CONFIG = 1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
N/A
0
0
00
01
0
0
0
01
0
0
01
0
0
0
0
1
CONFIG = 0
MODE = 1 (Full-Duplex)
0
0
0
0
0
0
0
0
0
0
0
1*
1
1
1
1
1
1
1
N/A
0
0
00
01
1*
0
0
01
0
1*
01
0
1*
0
1*
1
CONFIG = 1
Comments
Default SPI configuration is
3-wire, MSB first.
PWR_DWN = 0.
Default setting is for all
blocks powered on.
PWR_DWN = 1.
Default setting* is for all
functional blocks powered
down except PLL.
*MODE = CONFIG = 1.
Setting has PLL powered
down with OSCIN input
routed to RXCLK output.
Default setting is for TXEN
input to control power
on/off of Tx/Rx path.
Tx driver delayed by 31
1/f
Default setting is Duty Cycle
Restore disabled, ADC CLK
from OSCIN input, and PLL
multiplier × 2 setting.
*PLL multiplier × 4 setting.
Full-duplex RXCLK normally
at nibble rate.
*Exception on power-up.
Default setting is CLKOUT2
and CLKOUT1 enabled with
divide-by-2.
*CLKOUT1 and CLKOUT2
disabled.
Default setting has LPF ON
and Rx path at nominal
power bias setting.
*Rx path to low power.
DATA
clock cycles.
AD9865