CY2213 Ver la hoja de datos (PDF) - Cypress Semiconductor
Número de pieza
componentes Descripción
Lista de partido
CY2213 Datasheet PDF : 10 Pages
| |||
CY2213
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.
VDD
Measurement Point
PECL
Differential
Driver
130Ω
82Ω
50Ω
130Ω
50Ω
130Ω
82Ω
130Ω
Measurement Point
PECL
Differential
Driver
Figure 5. Output Driving Load (-1)
62Ω
45Ω
Measurement Point
45Ω
62Ω
45Ω
45Ω
Measurement Point
Figure 6. Output Driving Load (-2)
An alternative termination scheme can be used to drive a
standard PECL fanout buffer
VDD
Measurement Point
PECL
Differential
Driver
79Ω
50Ω
135Ω
50Ω
79Ω
79Ω
135Ω
79Ω
Measurement Point
Figure 7. Output Driving Load(-3)
Document #: 38-07263 Rev. *E
Page 6 of 10
Share Link: 