CY2213 Cypress Semiconductor Corp., CY2213 Datasheet - Page 6

• Manufacturer Part Number: CY2213
• Description: Lvpecl Outputs, Output Multiplier Select, OE, I2C
• Manufacturer: Cypress Semiconductor Corp.

Document #: 38-07263 Rev. *E
Functional Specifications
Crystal Input
The CY2213 receives its reference from an external crystal.
Pin XIN is the reference crystal input, and pin XOUT is the
reference crystal feedback. The parameters for the crystal are
given on page 5 of this data sheet. The oscillator circuit
requires external capacitors. Please refer to the application
note entitled Crystal Oscillator Topics for details.
Select Input
There is only one select input, pin S. This pin selects the
frequency multiplier in the PLL, and is a standard LVCMOS
input. The S pin has an internal pull-up resistor. The multiplier
selection is given on page 2 of this data sheet.
PECL Clock Output Driver
Figure 5 and Figure 6 show the clock output driver.
An alternative termination scheme can be used to drive a
standard PECL fanout buffer
PECL
Differential
Driver
PECL
Differential
Driver
PECL
Differential
Driver
130
130
62
62
79
79
Figure 5. Output Driving Load (-1)
Figure 7. Output Driving Load(-3)
Figure 6. Output Driving Load (-2)
50
50
45
50
45
50
130
45
79
82
135
V
DD
V
DD
82
130
135
45
79
Measurement Point
Measurement Point
Measurement Point
Measurement Point
Measurement Point
Measurement Point
CY2213
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