†
LEGEND:
MANTISSA (1.0 - 1.9375)
0
R R
E E
G G
HI/LO
R
E
G
ACCUMULATOR
W/ PROGRAMMABLE
LIMITS
ACC = ACCUMULATOR
LMT = LIMIT
LEVEL
DETECT
7
EXPONENT (2 - 2 )
SIN/COS
VECTOR FROM
CARRIER NCO
CIC SCALER
R
= DOWN SAMPLER
LEVEL
DETECT
-36
CIC SHIFTER
LOOP
GAIN
2
MUX = MULTIPLEXER
REG = REGISTER
0
-63
+
2 -2
REG
REG
IIN0-9/
QIN0-9
† INDICATES ELEMENTS RUNNING
1ST ORDER CIC (I & D FILTER)
COMPENSATION
FILTER
R
E
G
R
E
G
R R R
E E E
G G G
A
C
C
AT THE OUTPUT SAMPLE RATE
R
X
31
SERIALIZE
-1
1
2
COMPLEX
MULTIPLIER
†
†
R
E
G
FROM
PROGRAMMABLE
DIVIDER
L
M
T
M
U
X
L
M
T
M
U
X
R R R R R
E E E E E
G G G G G
IOUT0-9/
QOUT0-9
11 TAP
FIR FILTER
+
FIGURE 18. DATA FLOW FOR INTEGRATE/DUMP CONFIGURATION
†
LEGEND:
MANTISSA (1.0 - 1.9375)
R R
E E
G G
HI/LO
R
E
G
ACCUMULATOR
W/ PROGRAMMABLE
LIMITS
LEVEL
DETECT
ACC = ACCUMULATOR
LMT = LIMIT
0
7
EXPONENT (2 - 2 )
SIN/COS
VECTOR FROM
CARRIER NCO
CIC SCALER
1
CIC SHIFTER
R
= DOWN SAMPLER
LEVEL
DETECT
LOOP
GAIN
-36
0
-63
2
+
2 -2
MUX = MULTIPLEXER
REG = REGISTER
(TOP BITS ALIGNED)
REG
REG
3RD ORDER CIC FILTER
COMPENSATION
FILTER
IIN0-9/
QIN0-9
† INDICATES ELEMENTS RUNNING
R
E
G
R
E
G
R R R
E E E
G G G
A
C
C
A
C
C
A
C
C
AT THE OUTPUT SAMPLE RATE
R
X
55
-1
3
-3
1
SERIALIZE
IOUT0-9/
COMPLEX
MULTIPLIER
†
R
E
G
†
†
R
E
G
†
FROM
BIT RATE
NCO
QOUT0-9
R
E
G
L
M
T
M
U
X
L
M
T
M
U
X
R R R R R
E E E E E
G G G G G
15 TAP
FIR FILTER
+
+
+
FIGURE 19. DATA FLOW FOR 3RD ORDER CIC CONFIGURATION
LEGEND:
MANTISSA (1.0 - 1.9375)
0
ACC = ACCUMULATOR
LMT = LIMIT
R
E
G
ACCUMULATOR
W/ PROGRAMMABLE
LIMITS
LEVEL
DETECT
R R
E E
G G
HI/LO
7
EXPONENT (2 - 2 )
R
= DOWN SAMPLER
MUX = MULTIPLEXER
REG = REGISTER
SIN/COS
VECTOR FROM
CARRIER NCO
LOOP
GAIN
CIC SCALER
REG
REG
LEVEL
DETECT
-36
2
CIC SHIFTER
SERIALIZE
+
COMPENSATION
FILTER
0
-63
2 -2
IIN0-9/
QIN0-9
R
E
G
R
E
G
R R R
E E E
G G G
L
M
T
M
U
X
L
M
T
M
U
X
R R R R R
E E E E E
G G G G G
IOUT0-9/
QOUT0-9
11-15 TAP
X
FIR FILTER
21
COMPLEX
MULTIPLIER
FIGURE 20. DATA FLOW WITH CIC STAGE BYPASSED
INTERSIL [ Intersil ]
