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Programming Guide for CPLL66-XXXX
Introduction
The CPLL66 uses a simple 3 wire interface to program four internal registers. See Figure 1.
There are four 24 bit registers that need to be programmed. Which register is written into is simply
controlled by Control Bits C1 and C2. Table I summarizes the Truth Table for Control Bits C1 and C2.
Table I. C2, C1 Truth Table
Figure 1. Timing Diagram
Control Bits
C2
C1
Data Latch
00
01
10
11
R Counter
N Counter (A and B)
Function Latch (Including Prescaler)
Initialization Latch
Parameter
Conditions
Mechanical Shock
MIL-STD-883, Method 2002
Mechanical Vibration
MIL-STD-883, Method 2007
Solderability
MIL-STD-883, Method 1014
Resistance to Solvents
MIL-STD-883, Method 2016
t3
t4
t1
t2
CLOCK
DATA
DB23 (MSB)
DB22
DB2
DB1(CONTROL
BIT C2)
DB0(LSB)
(CONTROL BIT C1)
t6
t5
LE
0.60" SQ SMD
CPLL66-4240-4240
12730 Commonwealth Drive Fort Myers, Florida 33913
Phone: 239-561-3311 800-237-3061
Fax: 239-561-1025 www.crystek.com
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CORPORATION
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