CPLL58-2450-2450
0.582" × 0.800" SMD
MICROWAVE
A Division of Crystek Corporation
ENVIRONMENTAL COMPLIANCE
Parameter
Mechanical Shock
Mechanical Vibration
Solderability
Conditions
MIL-STD-883, Method 2002
MIL-STD-883, Method 2007
MIL-STD-883, Method 1014
MIL-STD-883, Method 2016
Resistance to Solvents
Programming Guide for CPLL58-XXXX
Introduction
The CPLL58 uses a simple 3 wire interface to program four internal registers. See Figure 1.
t3
t4
CLOCK
DATA
t1
t2
DB0(LSB)
(CONTROL BIT C1)
DB1(CONTROL
BIT C2)
DB23 (MSB)
DB22
DB2
t6
LE
LE
t5
Figure 1. Timing Diagram
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.
Control Bits
Data Latch
C2
0
C1
0
R Counter
0
1
1
1
0
1
N Counter (A and B)
Function Latch (Including Prescaler)
Initialization Latch
Table I. C2, C1 Truth Table
Page 4 of 6
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