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Table II shows the details of the four 24 bit registers.
Table II. Latch Summary
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
X
0
LDP
T2
T1
ABP2
ABP1
R14
R13
R12
R11
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
C2(0)
C1(0)
LO
C
K
DETECT
P
R
EC
IS
ION
RESERVED
TEST MODE
BITS
ANTI-
BACKLASH
WIDTH
14-BIT REFERENCE COUNTER
CONTROL
BITS
REFERENCE COUNTER LATCH
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
G1
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
A6
A5
A4
A3
A2
A1
C2(0)
C1(1)
CP
G
A
IN
RESERVED
13-BIT COUNTER
6-BIT COUNTER
CONTROL
BITS
N COUNTER LATCH
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
P2
P1
PD2
CP16
CP15
CP14
CP13
CP12
CP11
TC4
TC3
TC2
TC1
F5
F4
F3
F2
M3
M2
M1
PD1
F1
C2(1)
C1(0)
POW
E
R-DOW
N
2
PRESCALER
VALUE
CURRENT SETTING2
CURRENT SETTING 1
CONTROL
BITS
FUNCTION LATCH
TIMER COUNTER CONTROL
FAS
T
L
O
CK
MO
DE
FAS
T
L
O
CK
ENAB
L
E
C
P
THREE-
ST
A
T
E
P
D
P
O
LARITY
C
OUNTER
RE
S
E
T
POW
E
R-DOW
N
1
MUXOUT CONTROL
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
P2
P1
PD2
CP16
CP15
CP14
CP13
CP12
CP11
TC4
TC3
TC2
TC1
F5
F4
F3
F2
M3
M2
M1
PD1
F1
C2(1)
C1(1)
POW
E
R-DOW
N
2
PRESCALER
VALUE
CURRENT SETTING2
CURRENT SETTING 1
CONTROL
BITS
INITIALIZATION LATCH
TIMER COUNTER CONTROL
FAS
T
L
O
CK
MO
DE
FAS
T
L
O
CK
ENAB
L
E
C
P
THREE-
ST
A
T
E
P
D
P
O
LARITY
C
OUNTER
RE
S
E
T
POW
E
R-DOW
N
1
MUXOUT CONTROL
When using the CPLL66 family in a synthesizer application, all four 24 bit registers need to be written
into after power-up. After writing all four latches the first time, subsequent frequency step changes can
be accomplished by changing the N Counter Latch only.
Specifications subject to change without notice.
0.60" SQ SMD
CPLL66-2450-2450
12730 Commonwealth Drive Fort Myers, Florida 33913
Phone: 239-561-3311 800-237-3061
Fax: 239-561-1025 www.crystek.com
CRYSTEK
CORPORATION
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