m2004-02 Holt Integrated Circuits, Inc., m2004-02 Datasheet - Page 2

• Manufacturer Part Number: m2004-02
• Description: Frequency Synthesizer
• Manufacturer: Holt Integrated Circuits, Inc.

M5:M0
The internal PLL will adjust the VCSO output
frequency to be M (feedback divider) times the
selected input reference clock frequency. Note that
the product of M x the input reference frequency
nDIF_REF 0
must be such that it falls within the “lock” range of
the VCSO. The N output divider can be
programmed to divide the VCSO output frequency
by 1, 2, 4, or 8 and provide a 50% output duty
cycle.
Micro Networks
MR
DIF_REF 0
REF_CLK
REF_SEL
Micro Networks
An Integrated Circuit Systems Company
Mux
Functional Description:
OP_IN
324 Clark Street
Phase
Detector &
Active Loop
Filter
nOP_IN
+M
Parallel Programming Interface
OP_OUT
VCSO
nOP_OUT
Worcester, MA 01606
Output
Divider
Vc
FUNCTIONAL BLOCK DIAGRAM
nVc
F OUT
nF OUT
N1
tel: [phone]
2
The multiplying factor is programmed via a 6-bit
parallel bus.
The relationship between the VCSO frequency, the
M divider, and the Differential Input reference clock
is defined as follows:
When the N output divider is included, the
complete relationship for the output frequency is
defined as:
The N1 input can be hard wired to set the N divider
to a specific state that will automatically occur
during power-up.
FOUT = F VCSO = F REF_CLK x M
F VCSO = F REF_CLK x M
fax: [phone]
N
Preliminary Specifications
www.micronetworks.com
M2004-02
N