CY7B993V/CY7B994V
RoboClock
®
High-Speed Multi-Phase PLL Clock Buffer
High-Speed Multi-Phase PLL Clock Buffer
Features
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
Functional Description
The CY7B993V and CY7B994V High-speed Multi-phase PLL
Clock Buffers offer user selectable control over system clock
functions. This multiple output clock driver provides the system
integrator with functions necessary to optimize the timing of
high-performance computer and communication systems.
These devices feature a guaranteed maximum TTB window
specifying all occurrences of output clocks with respect to the
input reference clock across variations in output frequency,
supply voltage, operating temperature, input edge rate, and
process.
Eighteen configurable outputs each drive terminated
transmission lines with impedances as low as 50 while delivering
minimal and specified output skews at LVTTL levels. The outputs are
arranged in five banks. Banks 1 to 4 of four outputs allow a divide
function of 1 to 12, while simultaneously allowing phase
adjustments in 625 ps to 1300 ps increments up to 10.4 ns. One
of the output banks also includes an independent clock invert
function. The feedback bank consists of two outputs, which
allows divide-by functionality from 1 to 12 and limited phase
adjustments. Any one of these eighteen outputs can be
connected to the feedback input as well as driving other inputs.
Selectable reference input is a fault tolerance feature that allows
smooth change-over to secondary clock source, when the
primary clock source is not in operation. The reference inputs
and feedback inputs are configurable to accommodate both
LVTTL or Differential (LVPECL) inputs. The completely
integrated PLL reduces jitter and simplifies board layout.
For a complete list of related documentation,
click here.
500 ps Max Total Timing Budget (TTB™) window
12 MHz to 100 MHz (CY7B993V), or 24 MHz to 200 MHz
(CY7B994V) Input/Output Operation
Matched Pair Output Skew < 200 ps
Zero Input-to-Output Delay
18 LVTTL Outputs Driving 50 Terminated Lines
16 Outputs at 200 MHz: Commercial Temperature
6 Outputs at 200 MHz: Industrial Temperature
3.3V LVTTL/LVPECL, Fault-tolerant, and Hot Insertable
Reference Inputs
Phase Adjustments in 625 ps/1300 ps Steps Up to ± 10.4 ns
Multiply/Divide Ratios of 1–6, 8, 10, 12
Individual Output Bank Disable
Output High Impedance Option for Testing Purposes
Fully Integrated Phase Locked Loop (PLL) with Lock Indicator
<50-ps Typical Cycle-to-Cycle Jitter
Single 3.3V ± 10% Supply
100-pin TQFP Package
100-pin BGA Package
Cypress Semiconductor Corporation
Document Number: 38-07127 Rev. *O
•
198 Champion Court
•
San Jose
,
CA 95134-1709
•
408-943-2600
Revised November 27, 2017
CY7B993V/CY7B994V
RoboClock
®
Contents
Pinouts .............................................................................. 4
Pin Definition .................................................................... 6
Block Diagram Description .............................................. 7
Phase Frequency Detector and Filter .......................... 7
VCO, Control Logic, Divider,
and Phase Generator ......................................................... 7
Time Unit Definition ..................................................... 7
Divide and Phase Select Matrix .................................. 8
Output Disable Description .......................................... 9
INV3 Pin Function ..................................................... 10
Lock Detect Output Description ................................. 10
Factory Test Mode Description ................................. 10
Safe Operating Zone ................................................. 10
Absolute Maximum Conditions ..................................... 11
Operating Range ............................................................. 11
Electrical Characteristics ............................................... 11
Thermal Resistance ........................................................ 13
AC Test Loads and Waveforms ..................................... 13
Switching Characteristics .............................................. 14
AC Timing Diagrams ...................................................... 16
Ordering Information ...................................................... 17
Ordering Code Definitions ......................................... 17
Package Diagrams .......................................................... 18
Acronyms ........................................................................ 20
Document Conventions ................................................. 20
Units of Measure ....................................................... 20
Document History Page ................................................. 21
Sales, Solutions, and Legal Information ...................... 23
Worldwide Sales and Design Support ....................... 23
Products .................................................................... 23
PSoC®Solutions ....................................................... 23
Cypress Developer Community ................................. 23
Technical Support ..................................................... 23
Document Number: 38-07127 Rev. *O
Page 3 of 23
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
