cy23fp12-002 Cypress Semiconductor Corporation., cy23fp12-002 Datasheet

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cy23fp12-002

Manufacturer Part Number
cy23fp12-002
Description
200-mhz Field Programmable Zero Delay Buffer
Manufacturer
Cypress Semiconductor Corporation.
Datasheet
Cypress Semiconductor Corporation
Document #: 38-07644 Rev. **
Features
• Pre-programmed Configurations
• Fully field-programmable
• 10-MHz to 200-MHz operating range
• Split 2.5V or 3.3V outputs
• Two LVCMOS reference inputs
• Twelve low-skew outputs
• Input-output skew < 250 ps
• Cycle-cycle jitter < 100 ps (typical)
• Three-stateable outputs
• < 50-µA shutdown current
• Spread Aware
• 28-pin SSOP
• 3.3V operation
• Industrial temperature available
VDDC
REFSEL
— Input and output dividers
— Inverting/noninverting outputs
— Phase-locked loop (PLL) or fanout buffer configu-
— Output-output skew < 200 ps
— Device-device skew < 500 ps
Block Diagram
VSSC
REF1
REF2
S[2:1]
ration
FBK
Function
Selection
÷ M
÷ N
Lock Detect
400MHz
100 to
PLL
Test Logic
200-MHz Field Programmable Zero Delay Buffer
÷ 2X
÷ X
÷ 1
÷ 2
÷ 3
÷ 4
3901 North First Street
Functional Description
The CY23FP12-002 is a pre-programmed version of the
CY23FP12. It features a high-performance fully field-program-
mable 200 MHz zero delay buffer designed for high speed
clock distribution. The integrated PLL is designed for low jitter
and optimized for noise rejection. These parameters are
critical for reference clock distribution in systems using high-
performance ASICs and microprocessors.
The CY23FP12-002 is fully programmable via volume or
prototype programmers enabling the user to define an appli-
cation-specific Zero Delay Buffer with customized input and
output dividers, feedback topology (internal/external), output
inversions, and output drive strengths. For additional flexibility,
the user can mix and match multiple functions, listed in
Table 2, and assign a particular function set to any one of the
four possible S1-S2 control bit combinations. This feature
allows for the implementation of four distinct personalities,
selectable with S1-S2 bits, on a single programmed silicon.
The CY23FP12-002 also features a proprietary auto-power-
down circuit that shuts down the device in case of a REF
failure, resulting in less than 50 µA of current draw.
The CY23FP12-002 provides twelve outputs grouped in two
banks with separate power supply pins which can be
connected independently to either a 2.5V or a 3.3V rail.
Selectable reference input is a fault tolerance feature which
allows for glitch-free switch over to secondary clock source
when REFSEL is asserted/de-asserted.
VDDA
CLKA0
CLKA1
CLKA2
CLKA3
CLKA4
CLKA5
VSSA
VDDB
CLKB0
CLKB1
CLKB2
CLKB3
CLKB4
CLKB5
VSSB
San Jose
,
CA 95134
CLKB0
CLKB1
CLKB2
CLKB3
CLKB4
CLKB5
REF2
REF1
V
V
V
V
V
Pin Configuration
DDB
DDB
DDC
SSB
SSB
S2
Revised February 25, 2004
Top View
1
2
3
4
5
6
7
8
9
11
12
14
SSOP
10
13
CY23FP12-002
27
26
25
24
23
22
21
16
15
28
20
19
18
17
408-943-2600
REFSEL
FBK
CLKA0
CLKA1
V
CLKA2
CLKA3
V
V
CLKA4
CLKA5
V
V
S1
SSA
DDA
DDA
SSC
SSA
[+] Feedback

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cy23fp12-002 Summary of contents

Page 1

... VSSC Cypress Semiconductor Corporation Document #: 38-07644 Rev. ** Functional Description The CY23FP12-002 is a pre-programmed version of the CY23FP12. It features a high-performance fully field-program- mable 200 MHz zero delay buffer designed for high speed clock distribution. The integrated PLL is designed for low jitter and optimized for noise rejection. These parameters are critical for reference clock distribution in systems using high- performance ASICs and microprocessors ...

Page 2

... Bank A. LVTTL Clock output, Bank A. LVTTL Clock output, Bank A. POWER Ground for Bank A. LVTTL Clock output, Bank A. LVTTL CLock output, Bank A. LVTTL PLL feedback input. LVTTL Reference select input. REFSEL = 0, REF1 is selected. REFSEL = 1, REF2 is selected. CY23FP12-002 Description Page [+] Feedback ...

Page 3

... CLKB2 and CLKB3 will become complimentary pairs. Document #: 38-07644 Rev. ** /1,/2,/3,/4, /x,/2x /1,/2,/3,/4, /x,/2x Output /1,/2,/3,/4, /x,/2x Function PLL Select /1,/2,/3,/4, /x,/2x Matrix /1,/2,/3,/4, /x,/2x /1,/2,/3,/4, /x,/2x Figure 1. Basic PLL Block Diagram Description CY23FP12-002 CLKB5 CLKB4 CLKB3 CLKB2 CLKB1 CLKB0 CLKA5 CLKA4 CLKA3 CLKA2 CLKA1 CLKA0 Default +20 mA +20 mA Enable Enable Non-invert Non-invert Non-invert ...

Page 4

... CLKB3 and CLKB2 pair. Please refer to Table 3 for a list of divider values. CLKB10 Source Independently selects one out of the eight possible output dividers that will connect to the CLKB1 and CLKB0 pair. Please refer to Table 3 for a list of divider values. Document #: 38-07644 Rev. ** CY23FP12-002 Description Description Default Non-invert ...

Page 5

... CY23FP12-002 Frequency Calculation 200 33.3 200 50 The CY23FP12-002 is an extremely flexible clock buffer with up to twelve individual outputs, generated from an integrated 200 25 PLL. 200 50 There are four variables used to determine the final output frequency. These are the input Reference Frequency M, the N ...

Page 6

... Total Functional Gate Count ATES UL–94 Flammability Rating FIT Failure in Time T Power-up time for all reach PU DD minimum specified voltage (power ramps must be monotonic) DC Electrical Specifications for CY23FP12-002SC/I Parameter Description V Core Supply Voltage DDC Bank A, Bank B DDA DDB Supply Voltage [3] ...

Page 7

... Switching Characteristics for CY23FP12-002SC/I Parameter Description [6] Reference Frequency Reference Edge Rate Reference Duty Cycle [7] t Output Frequency 1 [5] Duty Cycle [5] t Rise Time 3 [5] t Fall Time 4 [8,9] TTB Total Timing Budget, Bank A and B same frequency Total Timing Budget, Bank A and B different frequency ...

Page 8

... Switching Characteristics for CY23FP12-002SC/I Parameter Description t Tracking Skew tsk [5] t PLL Lock Time LOCK T Inserted Loop Delay LD Switching Waveforms Duty Cycle Timing 1.4V 1.4V All Outputs Rise/Fall Time 2.0V 2.0V OUTPUT 0. Output-Output Skew 1.4V OUTPUT 1.4V OUTPUT t 5 Input-Output Propagation Delay INPUT ...

Page 9

... Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. CLK OUT C LOAD Package Type Commercial, 0°C to 70°C Commercial,0°C to 70°C Industrial, –40°C to 85°C Industrial, –40°C to 85°C CY23FP12-002 Operating Range 51-85079-*C Page [+] Feedback ...

Page 10

... Document History Page Document Title: CY23FP12-002 200-MHz Field Programmable Zero Delay Buffer Document Number: 38-07644 Orig. of REV. ECN NO. Issue Date Change ** 206761 See ECN Document #: 38-07644 Rev. ** Description of Change RGL New Data Sheet CY23FP12-002 Page [+] Feedback ...

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