AD9144BCPAZRL View Datasheet(PDF) - Analog Devices
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AD9144BCPAZRL Datasheet PDF : 125 Pages
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AD9144
STEP 2: DIGITAL DATAPATH
This section describes which interpolation filters to use and
how to set the data format being used. Additional digital
features are available including fine and coarse modulation,
digital gain scaling, and an inverse sinc filter used to improve
pass-band flatness. Table 22 provides further details on the
feature blocks available.
Table 18. Digital Datapath Settings
Addr. Bit No. Value1 Variable
0x112
0x
InterpMode
0x110
7
0x
DataFmt
Description
Select interpolation
mode; see the
Interpolation section.
DataFmt = 0 if twos
complement;
DataFmt = 1 if unsigned
binary.
1 0x denotes a register value that the user must fill in. See the Variable and
Description columns for information on selecting the appropriate register value.
STEP 3: TRANSPORT LAYER
This section describes how to set up the JESD204B links. The
parameters are determined by the desired JESD204B operating
mode. See the JESD204B Setup section for details.
Table 19 shows the register settings for the transport layer.
If using dual-link mode, perform writes from Register 0x300 to
Register 0x47D with CurrentLink = 0 and then repeat the same
set of register writes with CurrentLink = 1 (Register 0x200 and
Register 0x201 need only be written once).
Data Sheet
Table 19. Transport Layer Settings
Addr. Bit No. Value1 Variable
0x200
0x00
0x201
0x
UnusedLanes
0x300
6
3
2
0x450
0x
CheckSumMode
DualLink
CurrentLink
0x
DID
0x451
0x
BID
0x452
0x
LID
0x453
0x
7
[4:0]
0x454
0x
0x455
0x
0x456
0x
0x457
0x
0x458
0x
5
[4:0]
0x459
0x
5
Scrambling
L − 12
F − 12
K − 12
M − 12
N − 12
Subclass
NP − 12
JESDVer
[4:0]
0x45A
0x
7
[4:0] 0
0x45D
0x
0x46C
0x
S − 12
HD
CF
Lane0Checksum
Lanes
0x476
0x47D
0x
F
0x
Lanes
Description
Power up the
interface.
See the JESD204B
Setup section.
See the JESD204B
Setup section for
details on these
variables.
Set DID to match
the device ID sent
by the transmitter.
Set BID to match
the bank ID sent
by the transmitter.
Set LID to match
the lane ID sent
by the transmitter.
See the JESD204B
Setup section.
See the JESD204B
Setup section.
See the JESD204B
Setup section.
See the JESD204B
Setup section.
N = 16.
See the JESD204B
Setup section.
NP = 16.
JESDVer = 1 for
JESD204B,
JESDVer = 0 for
JESD204A.
See the JESD204B
Setup section.
See the JESD204B
Setup section.
CF must equal 0.
See the JESD204B
Setup section.
Deskew lanes. See
the JESD204B
Setup section.
See the JESD204B
Setup section.
Enable lanes.
1 0x denotes a register value that the user must fill in. See the Variable and
Description columns for information on selecting the correct register value.
2 This JESD204B link parameter is programmed in n − 1 notation as noted. For
example, if the setup requires L = 8 (8 lanes per link), program L − 1 or 7 into
Register 0x453[4:0].
Rev. B | Page 26 of 125
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