Datasheet

Data Sheet AD9637
Rev. A | Page 33 of 40
Reg.
Addr.
(Hex)
Parameter
Name Bit 7 (MSB) Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (LSB)
Default
Value
(Hex) Comments
0x19 USER_PATT1_LSB
(global)
B7 B6 B5 B4 B3 B2 B1 B0 0x00 User Defined
Pattern 1 LSB.
0x1A USER_PATT1_MS
B (global)
B15 B14 B13 B12 B11 B10 B9 B8 0x00 User Defined
Pattern 1
MSB.
0x1B USER_PATT2_LSB
(global)
B7 B6 B5 B4 B3 B2 B1 B0 0x00 User Defined
Pattern 2 LSB.
0x1C USER_PATT2_MS
B (global)
B15 B14 B13 B12 B11 B10 B9 B8 0x00 User Defined
Pattern 2
MSB.
0x21 Serial control
(global)
LVDS
output LSB
first
Word-wise DDR 1-lane, Bits[6:4]
100 = DDR 1-lane
PLL low
encode
rate
mode
Open Serial output number
of bits
10 = 12 bits
11 = 10 bits
0x42 Serial stream
control.
Default
causes MSB
first and the
native bit
stream.
0x22 Serial channel
status (local)
Open Open Open Open Open Open Channel
output
reset
Channel
power-
down
0x00 Used to
power down
individual
sections of
a converter.
0x100 Resolution/
sample rate
override
Open Resolution/
sample rate
override
enable
Resolution
10 = 12 bits
11 = 10 bits
Open Sample rate
000 = 20 MSPS
001 = 40 MSPS
010 = 50 MSPS
011 = 65 MSPS
100 = 80 MSPS
0x00 Resolution/
sample rate
override
(requires
transfer bit,
0xFF).
0x101 User I/O Control 2 Open Open Open Open Open Open Open SDIO
pull-down
0x00 Disables SDIO
pull-down.
0x102 User I/O Control 3 Open Open Open Open VCM
power-
down
Open Open Open 0x00 VCM control.
0x109 Sync Open Open Open Open Open Open Sync next
only
Enable
sync
0x00