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PIN DESCRIPTIONS
Power Supplies
V+ - Positive Power Supply, PIN 14.
Typically +5V volts.
GND - Ground, PIN 7.
Ground reference.
Oscillator
XTALIN, XTALOUT - Crystal Input 1, 2; PINS 4, 5.
6.176 MHz or 8.192 MHz crystal inputs. A 200 kohm resistor should be connected across these
pins. There is no need for external capacitors. The crystal should be connected to XTALIN and
XTALOUT with minimal length traces on the pc board.
Control
RESET - Reset, PIN 1.
When RESET is taken low, the OVR signal is reset.
FIFORST - FIFO Reset, PIN 2.
Taking FIFORST low resets the read and write pointers of the FIFO. Resetting the pointers will
cause some data loss. When FIFORST is low, the OSCOUT output is disabled.
ARE - Alternate Read Enable, PIN 6.
For normal operation, ARE is held at logic 0. In this configuration the oscillator controls the
read pointer of the FIFO. When ARE is at logic 1, the read pointer of the FIFO will be
controlled by the clock signal on pin 12, ARC.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
RESET
RESET
V+
POWER SUPPLY
FIFO RESET
FIFORST
DIN
DATA INPUT
BUFFER OVERFLOW/UNDERFLOW
OVR
ARC
ALTERNATE READ CLOCK
CRYSTAL OUTPUT
XTALIN
OSCOUT
OSCILLATOR OUTPUT
CRYSTAL INPUT
XTALOUT
CLKOUT
OUTPUT CLOCK
ALTERNATE READ ENABLE
ARE
DOUT
DATA OUTPUT
GROUND
GND
CLKIN
INPUT CLOCK
CS61600
8
DS9F3
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