SM3G Datasheet, PDF (3/36 Pages) Connor-Winfield Corporation – ULTRA MINIATURE STRATUM 3 MODULE

Table 1
Parameter
Voltage
Power
Operating Temp Range
Reference Frequency 1, 2, 3, 4
CMOS Output Frequency #1
M/S Output
BITS_Clk
Master/Slave Input Reference
Input Reference Pulse Width
Reference Qualification Time
Input Capacitance (LVCMOS)
Output Drive Levels (LVCMOS)
Free Run Accuracy
Hold Over Accuracy
Dimensions
Specifications for Ultra Miniature Stratum 3

Specification
3.3V ± 5%
< 500 mW
0° - 70°C
8 kHz - 77.76 MHz(Auto Detected)
12.96 MHz - 77.76 MHz
8 kHz
1.544/2.048 MHz (Selectable)
8 kHz - 77.76 MHz
10 ns Min @ 8 kHz, 5 ns Min @ >8 kHz
10 sec.
10 pF
Source Current: 7 mA, Sink Current: 10 mA
4.6 ppm
0.37 ppm
1.45 x 1.0 x 0.25 inches (36.83 x 25.4 x 6.35 mm)
Table 2
Pin # I/O
1
O
2
O
3
I
4
I
5
I
6
I
7
I
8
9
10
11
O
12
O
13
O
14
I
Pin Name
LOS
LOL
M/S Ref
REF1
REF2
REF3
REF4
TDI
TMS
TRST
BITS_CLK
M/S_OUT
OUTPUT1
VPP
15
I
VPN
16
I
T1/E1
17
O
HOLD_GOOD
18
TDO
19
TCK
20
GND
21
I
SPI_CLK
22
I
SPI_IN
23
VCC
24
I
SPI_ENBL
25
I
RESET
26
O
SPI_OUT
27
O
SPI_INT
28
I
MASTER SELECT
Pin Description
Pin Description
Alarm Output - Loss of Active Reference Signal
Alarm Output - Loss of Lock
Master/Slave reference input – 8 kHz to 77.76 MHz auto detected
Reference Input 1 – 8 kHz to 77.76 MHz auto detected
Reference Input 2 – 8 kHz to 77.76 MHz auto detected
Reference Input 3 – 8 kHz to 77.76 MHz auto detected
Reference Input 4 – 8 kHz to 77.76 MHz auto detected
JTAG TDI pin
JTAG TMS pin
JTAG TRST pin
1.544 or 2.048 MHz output selected by pin 16
Master/Slave 8 kHz output
Synchronous Primary Output
Positive Programing Supply Pin. During normal operation, it is
recommended to float this pin.
Negative Programming Supply Pin. During normal operation it is
recommended to float this pin.
BITS_CLK select input – 1.544 MHz, 0=2.048 MHz, 4.7k Ohm Pull-up
Holdover Good Output Flag – 1=Holdover Available
JTAG TDO pin
JTAG TCK pin
Module Ground
SPI Port Clock input
SPI Port Data input
3.3 Vdc VCC Supply Input
SPI Port Enable input – Active Low, 4.7k Ohm Pull-up
Module Reset – Active Low, 10 ms Hold time
SPI Port Data Output
SPI Port Interrupt Output – Active low
Master/Slave select input – 1=Master, 0=Slave
SM3G5 Data Sheet #: TM083 Page 3 of 36 Rev: 05 Date: 01/26/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice