
MAX19713
FD Mode
The MAX19713 features an FD mode, which is ideal for
applications supporting frequency-division duplex. In
FD mode, both Rx ADC and Tx DAC, as well as their
respective digital buses, are active and the device can
receive and transmit simultaneously. Switching from FD
mode to other Rx or Tx modes is fast (0.1s) since
Table 6. MAX19713 Default (Power-On) Register Settings
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
REGISTER
NAME
16
(MSB)
15
14
13
12
11
10
9
8
7
6
5
0
111
ENABLE-16
00
Aux-ADC
= ON
——
Aux-DAC1 to Aux-DAC3 =
ON
—
FD mode
0
1
0
1
0
001
1
0
Aux-DAC1
DAC1 output set to 1.1V
00
0
Aux-DAC2
DAC2 output set to 0V
00
0
Aux-DAC3
DAC3 output set to 0V
000
0
IOFFSET
——
—
No offset on channel ID
000
0
QOFFSET
——
—
No offset on channel QD
00
COMSEL
—
———
—
VCOMD = 1.06V
00
0
Aux-ADC
0
Aux-ADC = ON, Conversion = IDLE, Aux-ADC REF = 2.048V, MUX = ADC1,
Averaging = 1, Clock Divider = 1, DOUT = Disabled
111
ENABLE-8
—
———
FD mode
111
WAKEUP-SEL
—
———
Wake-up state = FD mode
Table 7. Aux-DAC Enable Table
(ENABLE-16 Mode)
E6
E5
E4
Aux-DAC3
Aux-DAC2
Aux-DAC1
0
ONONON
00
1
ON
OFF
01
0
ON
OFF
ON
01
1
ON
OFF
1
0
OFF
ON
10
1
OFF
ON
OFF
11
0
OFF
ON
1
OFF
0
Default mode
10-Bit, 45Msps, Full-Duplex
Analog Front-End
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Table 8. Aux-ADC Enable Table
(ENABLE-16 Mode)
E9
SELECTION
0 (Default)
Aux-ADC is Powered ON
1
Aux-ADC is Powered OFF