Analog Devices AD9273 Manual page 44

Addr. Bit 7
(Hex) Register Name (MSB)
19 USER_PATT1_LSB B7
1A USER_PATT1_MSB B15
1B USER_PATT2_LSB B7
1C USER_PATT2_MSB B15
21 SERIAL_CONTROL LSB first
1 = on
0 = off
(default)
22 SERIAL_CH_STAT X
2B FLEX_FILTER X
2C ANALOG_INPUT X
2D CROSS_POINT_ X
SWITCH
Bit 6 Bit 5 Bit 4
B6 B5 B4
B14 B13 B12
B6 B5 B4
B14 B13 B12
X X X
X X X
Enable X X
automatic
low-pass
tuning
1 = on
(self-
clearing)
X X X
X Crosspoint switch enable
10 0000 = CWD0± (differential)
10 0001 = CWD1± (differential)
10 0010 = CWD2± (differential)
10 0011 = CWD3± (differential)
10 0100 = CWD4± (differential)
10 0101 = CWD5± (differential)
10 0110 = CWD6± (differential)
10 0111 = CWD7± (differential)
11 0000 = CWD0+ (single ended)
11 0001 = CWD1+ (single ended)
11 0010 = CWD2+ (single ended)
11 0011 = CWD3+ (single ended)
11 0100 = CWD4+ (single ended)
11 0101 = CWD5+ (single ended)
11 0110 = CWD6+ (single ended)
11 0111 = CWD7+ (single ended)
11 1000 = CWD0− (single ended)
11 1001 = CWD1− (single ended)
11 1010 = CWD2− (single ended)
11 1011 = CWD3− (single ended)
11 1100 = CWD4− (single ended)
11 1101 = CWD5− (single ended)
11 1110 = CWD6− (single ended)
11 1111 = CWD7− (single ended)
0x xxxx = power down CW channel (default)
Rev. B | Page 43 of 48
Bit 3 Bit 2 Bit 1
B3 B2 B1
B11 B10 B9
B3 B2 B1
B11 B10 B9
<10 000 = 12 bits (default, normal
MSPS, bit stream)
low 001 = 8 bits
encode 010 = 10 bits
rate 011 = 12 bits
mode 100 = 14 bits
1 = on
0 = off
(default)
X X Channel
output
reset
1 = on
0 = off
(default)
High-pass filter cutoff
0000 = f /20.7
LP
0001 = f /11.5
LP
0010 = f /7.9
LP
0011 = f /6.0
LP
0100 = f /4.9
LP
0101 = f /4.1
LP
0110 = f /3.5
LP
0111 = f /3.1
LP
X X LOSW-x connect
00 = high-Z
01 = (−)LNA output
10 = (+)LNA output
11 = high-Z
AD9273
Bit 0 Default Default Notes/
(LSB) Value Comments
B0 0x00 User-defined
pattern, 1 LSB
(global).
B8 0x00 User-defined
pattern, 1 MSB
(global).
B0 0x00 User-defined
pattern, 2 LSB
(global).
B8 0x00 User-defined
pattern, 2 MSB
(global).
0x00 Serial stream
control. Default
causes MSB first
and the native bit
stream (global).
Channel 0x00 Used to power
power- down individual
down sections of a
1 = on converter (local).
0 = off
(default)
0x00 Filter cutoff
(global). (f
low-pass filter
cutoff frequency.)
0x00 LNA active
termination/input
impedance
(global).
0x00 Crosspoint switch
enable (local).
=
LP