Datasheet

AD9557 Data Sheet
Rev. B | Page 58 of 92
Reg
Addr
(Hex)
Opt Name D7 D6 D5 D4 D3 D2 D1 D0 Def
0x0323 L Base loop
Filter A
coefficient
set (normal
phase
margin
of 70º)
NPM Alpha-0[7:0] 24
0x0324 L NPM Alpha-0[15:8] 8C
0x0325 L Reserved NPM Alpha-1[6:0] 49
0x0326 L NPM Beta-0[7:0] 55
0x0327 L NPM Beta-0[15:8] C9
0x0328 L Reserved NPM Beta-1[6:0] 7B
0x0329 L NPM Gamma-0[7:0] 9C
0x032A L NPM Gamma-0[15:8] FA
0x032B L Reserved NPM Gamma-1[6:0] 55
0x032C L NPM Delta-0[7:0] EA
0x032D L NPM Delta-0[15:8] E2
0x032E L Reserved NPM Delta-1[6:0] 57
Output PLL (APLL)
0x0400 APLL
charge
pump
Output PLL (APLL) charge pump[7:0] 81
0x0401 APLL N
divider
Output PLL (APLL) feedback N divider[7:0] 14
0x0402
Reserved
Reserved
00
0x0403 APLL loop
filter control
APLL loop filter control[7:0] 07
0x0404
Reserved
Bypass
internal
Rzero
00
0x0405
APLL VCO
control
Reserved (default: 0x2)
APLL locked
controlled
sync disable
Reserved
Manual
APLL VCO
cal (not auto-
clearing)
20
0x0406 Reserved Reserved 00
0x0407 RF divider RF Divider 2[3:0] RF Divider 1[3:0] 44
0x0408 Reserved RF divider
start-up
mode
Reserved PD RF
Divider 2
PD RF
Divider 1
02
Output Clock Distribution
0x0500 Distribution
output sync
Reserved Mask
Channel 1
sync
Mask
Channel 0
sync
Reserved Sync source
selection
Auto sync mode 02
0x0501 Channel 0 Enable 3.3 V
CMOS driver
OUT0 format[2:0] OUT0 polarity[1:0] OUT0
drive
strength
Enable
OUT0
10
0x0502 Channel 0 divider[7:0] 00
0x0503 Reserved Channel 0
PD
Select RF
Divider 2
Channel 0 divider[9:8] 00
0x0504 Reserved Channel 0 divider phase[5:0] 00
0x0505 Channel 1 Reserved OUT1 format[2:0] OUT1 polarity[1:0] OUT1 drive
strength
Enable
OUT1
10
0x0506 Reserved 10
0x0507 Channel 1 divider[7:0] 03
0x0508 Reserved Channel 1 PD Select RF
Divider 2
Channel 1 divider[9:8] 00
0x0509 Reserved Channel 1 divider phase[5:0] 00
0x050A Reserved 10
0x050B Reserved 10
0x050C Reserved 00
0x050D Reserved 00
0x050E
Reserved
00
0x050F Reserved 10
0x0510 Reserved 03
0x0511 Reserved 00
0x0512 Reserved 00
0x0513 Reserved 00
0x0514 Reserved 00
0x0515 Reserved 00