3.3V Spread-Spectrum EconOscillator
Pin Description
PIN
1
NAME
OUT
FUNCTION
Oscillator Output
2
SPRD
Dither Enable. When the pin is high, the dither is enabled. When the pin is low, the dither is disabled.
3
V
Power Supply
Ground
CC
4
GND
Output Enable. When the pin is high, the output buffer is enabled. When the pin is low, the output is
disabled but the internal master oscillator is still on.
5
6
OE
Power-Down. When the pin is high, the master oscillator is enabled. When the pin is low, the master
oscillator is disabled (power-down mode).
PDN
7
8
SDA
SCL
2-Wire Serial Data. This pin is for serial data transfer to and from the device.
2-Wire Serial Clock. This pin is used to clock data into and out of the device.
V
CC
EEPROM CONTROL
REGISTERS
SDA
DS1087L
2-WIRE
INTERFACE
ADDR
SCL
PRESCALER
FACTORY-PROGRAMMED
OSCILLATOR
PDN
MASTER
OSCILLATOR
OUTPUT
DITHER
CONTROL
PRESCALER
BY 1, 2, 4...256
OUT
OE
TRIANGLE WAVE
GENERATOR
SPRD
GND
DITHER SIGNAL
Figure 1. Functional Diagram
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7
DALLAS [ DALLAS SEMICONDUCTOR ]
