EVAL-ADF7021-VDB2Z Analog Devices Inc, EVAL-ADF7021-VDB2Z Datasheet - Page 45

• Manufacturer Part Number: EVAL-ADF7021-VDB2Z
• Description: 868 - 870MHz - EVALUATION BOARD
• Manufacturer: Analog Devices Inc
• Type: Transceiverr

Specifications of EVAL-ADF7021-VDB2Z

• Frequency: 868MHz ~ 870MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ADF7021
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REGISTER 0—N REGISTER
•
•
The RF output frequency is calculated as follows:
For direct output,
With RF_DIVIDE_BY_2 (Register 1, Bit DB18) enabled,
In UART/SPI mode, the TxRxCLK pin is used to input
the transmitted data. The received data is available on the
TxRxDATA pin.
RF
RF
M3
0
0
0
0
1
1
1
1
OUT
OUT
MUXOUT
M2
0
0
1
1
0
0
1
1
=
=
PFD
PFD
M1
0
1
0
1
0
1
0
1
U1
0
1
×
×
⎛
⎜
⎝
0
MUXOUT
REGULATOR_READY (DEFAULT)
FILTER_CAL_COMPLETE
DIGITAL_LOCK_DETECT
RSSI_READY
Tx_Rx
LOGIC_ZERO
TRISTATE
LOGIC_ONE
INTEGER
TR1
0
1
5 .
UART_MODE
DISABLED
ENABLED
×
Tx/Rx
TRANSMIT
RECEIVE
⎛
⎜
⎝
INTEGER
_
N8
0
0
.
.
.
1
1
1
N
INTEGER_N
+
N7
0
0
.
.
.
1
1
1
FRACTIONAL
_
N
N6
0
0
.
.
.
1
1
1
+
FRACTIONAL
2
N5
1
1
.
.
.
1
1
1
15
Figure 62. Register 0—N Register Map
N4
0
1
.
.
.
1
1
1
2
_
15
N
N3
1
0
.
.
.
1
1
1
⎞
⎟
⎠
Rev. 0 | Page 45 of 60
_
N
N2
1
0
.
.
.
0
1
1
⎞
⎟
⎠
N1
1
0
.
.
.
1
0
1
•
INTEGER_N
DIVIDE RATIO
23
24
.
.
.
253
254
255
FRACTIONAL_N
In the MUXOUT map (Bits[DB31:DB29]), FILTER_CAL_
COMPLETE indicates when a coarse or coarse plus fine IF
filter calibration has finished. DIGITAL_LOCK_DETECT
indicates when the PLL has locked. RSSI_READY indicates
that the RSSI signal has settled and an RSSI readback can
be performed. Tx_Rx gives the status of Bit DB27 in this
register, which can be used to control an external Tx/Rx
switch.
M15
0
0
0
.
.
.
1
1
1
1
M14
0
0
0
.
.
.
1
1
1
1
M13
0
0
0
.
.
.
1
1
1
1
...
...
...
...
...
...
...
...
...
...
...
M3
0
0
0
.
.
.
1
1
1
1
M2
0
0
1
.
.
.
0
0
1
1
M1
0
1
0
.
.
.
0
1
0
1
FRACTIONAL_N
DIVIDE RATIO
ADDRESS
0
1
2
.
.
.
32,764
32,765
32,766
32,767
BITS
ADF7021-V