AD9854 DDS Eval Board Connections and Notes
A.Stummer June 16'04  (revised 14Mar2006)
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SUPPLIES **********************************************************************
AVDD, DVDD & VCC  +3.3V @ 250mA (power on with LED but no programming)
GND  3.3V return

BOARD MODIFICATIONS ***********************************************************
Jumper J1 (FSK Input) to J26 (Comparator Output).
Jumper W2.1 (Comparator Input) to +3.3V with 3.32K, (resistor from R10 to C13).
Addition of 15.36000MHz XO to Y1 (optional oscillator).
Addition of three of 499 Ohm to ground for PMODE, RDB and A2.

OUTPUT ************************************************************************
J5	RF output (Unfiltered, SMB connector)

BNC CONNECTORS ****************************************************************
DATA IN to    A0 via 499 Ohm!
UPDATE CLK to I/O UD via 499 Ohm!
SCLK to       WRB via 499 Ohm!
M RESET to    MRESET via 499 Ohm!

JUMPER SELECTION **************************************************************
For parallel mode:  Jumper W9 and W11-15.
For serial mode:    Open   W9 and W11-15.

JUMPERS ***********************************************************************
Jumper	Deflt	Par.	Ser.	Description
------------------------------------------
W1	1	0	0	2nd LPF to Q1b or Q2
W2	3	3	3	J6 to LPF output
W3	3	1	1	Single ended clock
W4	1	1	1	50 Ohm load for Q1b
W5	Does not exist.
W6	1	0	0	DAC current set (open=10mA)
W7	1	0	0	Q2 to J4 or & 2nd LPF
W8	3	0	0	2nd LPF to J7 or comparator
W9	1	1	0	Parallel port Enable (for FSK)
W10	1	1	1	Q1 path
W11	1	1	0	Parallel port enable
W12	1	1	0	Parallel port enable
W13	1	1	0	Parallel port enable
W14	1	1	0	Parallel port enable
W15	1	1	0	Parallel port enable
W16	1	0	0	Q1 path
W17	3	1	1	Local xtal
Where "0" means no jumper, "1" means jumper 1-2, "3" jumper 2-3
  and "Deflt" means as shipped from Analog Devices.