M1010-01 Datasheet Rev 0.5
2 of 8
Revised 30Mar2005
Integr ate d Circuit Systems , In c. ● Comm unication s Modules ● www.icst.com ● tel (508) 852-5400
Integrated
Circuit
Systems, Inc.
M1010-01
VCSO BASED CLOCK JITTER ATTENUATOR
Preliminar y In f o r m atio n
DETAILED BLOCK DIAGRAM
Figure 3: Detailed Block Diagram
PIN DESCRIPTIONS
Number
Name
I/O
Configuration
Description
1, 2, 3, 10, 14, 26
GND
Ground
Power supply ground connections.
4
9
OP_IN
nOP_IN
Input
External loop filter connections.
See Figure 4, External Loop Filter, on pg. 4.
5
8
nOP_OUT
OP_OUT
Output
6
7
nVC
VC
Input
11, 18, 19, 33
VCC
Power
Power supply connection, connect to +3.3V.
12, 13, 17, 25, 32
NC
No internal connection.
15
16
FOUT
nFOUT
Output
No internal terminator
Clock output pairs. Differential LVPECL.
20
nDIF_REF1
Input
Internal pull-UP resistor1
Note 1: For typical values of internal pull-down and pull-up resistors, see “Inputs with Pull-down” and “Inputs with Pull-up”
in Table 8, DC Characteristics, on pg. 6.
Reference clock input pair.
Differential LVPECL or LVDS.
21
DIF_REF1
Internal pull-down resistor1
22
REF_SEL
Input
Internal pull-down resistor1
Reference clock input selection. LVCMOS/LVTTL:
Logic 1 selects DIF_REF1, nDIF_REF1.
Logic 0 selects DIF_REF0, nDIF_REF0.
23
nDIF_REF0
Input
Internal pull-UP resistor1
Reference clock input pair.
Differential LVPECL or LVDS.
24
DIF_REF0
Internal pull-down resistor1
27
28
FIN_SEL1
FIN_SEL0
Input
Internal pull-down resistor1
I
nput clock frequency selection. LVCMOS/LVTTL.
See Table 3, Mfin (Frequency Input) Divider Look-Up Table
(LUT) on pg. 3.
29
30
31
SEL0
SEL1
SEL2
Input
Internal pull-UP resistor1
M and R divider value selection. LVCMOS/ LVTTL.
See Table 4, SEL2:0 Look-up Table (LUT) on pg. 3.
34, 35, 36
DNC
Do Not Connect.
Table 2: Pin Descriptions
Phase
Locked
Loop
(PLL)
M1010
SAW Delay Line
Phase
Shifter
VCSO
C
POST
C
POST
VC
nVC
R
POST
nOP_OUT
OP_OUT
R
POST
R
LOOP
R
LOOP
C
LOOP
C
LOOP
R
IN
R
IN
OP_IN
nOP_IN
Phase
Detector
Loop Filter
Amplifier
External
Loop Filter
Components
FOUT
nFOUT
SEL2:0
FIN_SEL1:0
R Div
MUX
0
REF_SEL
DIF_REF1
nDIF_REF1
DIF_REF0
nDIF_REF0
1
2
Divider LUT
3
Mfin Divider
LUT
Mfin Divider
M Div