SP8861 Mitel Networks, SP8861 Datasheet - Page 7

• Manufacturer Part Number: SP8861
• Description: 13GHz Low Power Single-Chip Frequency Synthesiser
• Manufacturer: Mitel Networks

(SEE TABLE 2)
(SEE TABLE 2)
DETECTOR
DETECTOR
SENSE BIT
SENSE BIT
PHASE
PHASE
MSB
MSB
DETECTOR GAIN
DETECTOR GAIN
CHIP SELECT
DATA CLOCK
(SEE TABLE 1)
(SEE TABLE 1)
CONTROL
CONTROL
G2 G1 2
G2 G1 2
PHASE
PHASE
DATA
(SEE TABLE 4)
18
17
DETECTOR
MSB
PD1 PD2
CONTROL
BISTABLE
PHASE
2
2
17
16
DUAL MODULUS
N RATIO SELECT
0 = 416/17
1 = 48/9
2
2
Fig. 7a F1 or F2 word, bit allocation with 4 16/17 selected
16
15
Fig. 7b F1 or F2 word, bit allocation with 4 8/9 selected
22 CLOCKS
15-BIT PROGRAMMABLE COUNTER (M COUNTER)
15-BIT PROGRAMMABLE COUNTER (M COUNTER)
22 BITS
2
2
15
14
F1 WORD
2
12
2
2
14
13
2
11
0 0
2
2
13-BIT PROGRAMMABLE COUNTER (R COUNTER)
Fig. 7c Reference word bit allocation
13
12
Fig. 7 Data format diagrams
2
10
2
2
12
11
2
Fig. 7d Data load sequence
9
DATA LOADS ON FALLING EDGES
2
2
11
10
2
8
2
2
10
9
2
7
22 CLOCKS
2
2
9
8
22 BITS
2
F2 WORD
6
2
2
8
7
2
5
2
2
7
6
1 0
2
4
2
2
6
5
2
3
2
2
5
4
2
2
MUST BE ZERO
2
2
4
3
2
1
2
PROGRAMMABLE
0
3
22 CLOCKS
2
(A COUNTER)
22 BITS
PROGRAMMABLE
0
REF WORD
COUNTER
2
2
(A COUNTER)
2
2
4-BIT
COUNTER
C
CONTROL
TABLE 3)
2
LOGIC
3-BIT
(SEE
2
2
1
1
LSB
C
1 1
1
2
2
0
0
CONTROL
CONTROL
C2 C1
C2 C1
TABLE 3)
TABLE 3)
LOGIC
LOGIC
(SEE
(SEE
LSB
LSB
SP8861
7