cy29773 Cypress Semiconductor Corporation., cy29773 Datasheet

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cy29773

Manufacturer Part Number
cy29773
Description
2.5v Or 3.3v, 200-mhz, 12-output Zero Delay Buffer
Manufacturer
Cypress Semiconductor Corporation.
Datasheet

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Cypress Semiconductor Corporation
Document #: 38-07573 Rev. *A
Features
Block Diagram
• 6 ps typical period jitter
• Output frequency range: 8.33 MHz to 200 MHz
• Input frequency range: 6.25 MHz to 125 MHz
• 2.5V or 3.3V operation
• Split 2.5V/3.3V outputs
• 12 Clock outputs: drive up to 24 clock lines
• One feedback output
• Three reference clock inputs: LVPECL or LVCMOS
• Phase-locked loop (PLL) bypass mode
• Spread Aware™
• Output enable/disable
• Pin-compatible with MPC9773 and MPC973
• Industrial temperature range: –40°C to +85°C
• 52-pin 1.0-mm TQFP package
FB_SEL(0,1)
PECL_CLK#
PECL_CLK
TCLK_SEL
SELC(0,1)
VCO_SEL
SELA(0,1)
SELB(0,1)
REF_SEL
FB_SEL2
INV_CLK
MR#/OE
PLL_EN
SDATA
TCLK0
TCLK1
FB_IN
SCLK
Power-On
Reset
0
1
2
2
2
2
Detector
Phase
Output Disable
Data Generator
Circuitry
/4, /6, /8, /12
/4, /6, /8, /10
/4, /6, /8, /10
/2, /4, /6, /8
Sync Pulse
LPF
VCO
12
0
1
/2
0
1
D Q
D Q
D Q
D Q
D Q
D Q
198 Champion Court
2.5V or 3.3V, 200-MHz, 12-Output Zero
Sync
Sync
Sync
Sync
Sync
Sync
Frz
Frz
Frz
Frz
Frz
Frz
QA0
QA1
QA2
QA3
QB0
QB1
QB2
QB3
QC0
QC1
QC2
QC3
FB_OUT
SYNC
Description
The CY29773 is a low-voltage high-performance 200-MHz
PLL-based zero delay buffer designed for high-speed clock
distribution applications.
The CY29773 features one LVPECL and two LVCMOS
reference clock inputs and provides 12 outputs partitioned in
three banks of four outputs each. Each bank divides the VCO
output per SEL(A:C) settings (see Table 2. Function Table
(Configuration Controls)). These dividers allow output-to-input
ratios of 8:1, 6:1, 5:1, 4:1, 3:1, 8:3, 5:2, 2:1, 5:3, 3:2, 4:3, 5:4,
1:1, and 5:6. Each LVCMOS-compatible output can drive 50Ω
series-
series-terminated transmission lines, each output can drive
one or two traces, giving the device an effective fanout of 1:24.
The PLL is ensured stable, given that the VCO is configured
to run between 200 MHz to 500 MHz. This allows a wide range
of output frequencies, from 8 MHz to 200 MHz. For normal
operation, the external feedback input FB_IN is connected to
the feedback output FB_OUT. The internal VCO is running at
multiples of the input reference clock set by the feedback
divider (see Table 1. Frequency Table).
When PLL_EN is LOW, PLL is bypassed and the reference
clock directly feeds the output dividers. This mode is fully static
and the minimum input clock frequency specification does not
apply.
Pin Configuration
PECL_CLK#
PECL_CLK
TCLK_SEL
or
REF_SEL
FB_SEL2
MR#/OE
PLL_EN
San Jose
SDA TA
TCLK0
TCLK1
A V SS
A V DD
SCLK
parallel-terminated
1
2
3
4
5
6
7
8
9
10
11
12
13
,
52 51 50 49 48 47 46 45 44 43 42 41 40
14 15 16 17 18 19 20 21 22 23 24 25 26
CA 95134-1709
C Y29773
Revised October 27, 2005
transmission
Delay Buffer
39
38
37
36
35
34
33
32
31
30
29
28
27
CY29773
408-943-2600
lines.
V SS
QB0
V DDQB
QB1
V SS
QB2
V DDQB
QB3
FB_IN
V SS
FB_OUT
V DD
FB_SEL0
For
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cy29773 Summary of contents

Page 1

... The CY29773 is a low-voltage high-performance 200-MHz PLL-based zero delay buffer designed for high-speed clock distribution applications. The CY29773 features one LVPECL and two LVCMOS reference clock inputs and provides 12 outputs partitioned in three banks of four outputs each. Each bank divides the VCO output per SEL(A:C) settings (see Table 2 ...

Page 2

... Power supply for bank A output clocks. VDD 2.5V or 3.3V Power supply for bank B output clocks. VDD 2.5V or 3.3V Power supply for bank C output clocks. VDD 2.5V or 3.3V Power supply for PLL. VDD 2.5V or 3.3V Power supply for core and inputs. Ground Analog Ground. Ground Common Ground. CY29773 [2,3] [2,3] [2,3] [2,3] [2,3] Page [+] Feedback ...

Page 3

... QB(0:3) ÷8 ÷12 ÷16 ÷20 ÷4 ÷6 ÷8 ÷10 CY29773 Input Frequency Range (AVDD = 2.5V) 6.25 MHz to 11.8 MHz 1 SELC0 QC(0:3) ÷4 0 ÷8 1 ÷ ³16 ÷2 0 ÷4 1 ÷6 0 ÷8 1 Page [+] Feedback ...

Page 4

... Document #: 38-07573 Rev. *A FB_OUT ÷8 0 ÷12 1 ÷16 0 ÷20 1 ÷16 0 ÷24 1 ÷32 0 ÷40 1 ÷4 0 ÷6 1 ÷8 0 ÷10 1 ÷8 0 ÷12 1 ÷16 0 ÷20 1 CY29773 Page [+] Feedback ...

Page 5

... A Condition LVCMOS LVCMOS LVPECL [4] LVPECL – Alternatively, each output drives up to two 50Ω series terminated transmission TT CY29773 Min. Max. Unit –0.3 5.5 V 2.375 3.465 V –0 0 –0 0 ÷ 200 – ...

Page 6

... MHz MAX f > 100 MHz MAX 0.6V to 1.8V TCLK to FB_IN PCLK to FB_IN . Outputs are at same supply voltage unless otherwise stated. Parameters are guaranteed impacts static phase offset t(φ). CMR PP CY29773 Min. Typ. Max. Unit µA – – 100 – – ...

Page 7

... Condition ÷4 Feedback ÷6 Feedback ÷8 Feedback ÷10 Feedback ÷12 Feedback ÷16 Feedback ÷20 Feedback ÷24 Feedback ÷32 Feedback ÷40 Feedback Bypass mode (PLL_EN = 0) LVPECL LVPECL 0.8V to 2.0V CY29773 Min. Typ. Max. Unit – – – – 100 – – 150 – ...

Page 8

... SYNC Output In situations where output frequency relationships are not integer multiples of each other the SYNC output provides a signal for system synchronization. The CY29773 monitors the relationship between the QA and the QC output clocks. It provides a low going pulse, one period in duration, one period prior to the coincident rising edges of the QA and QC outputs ...

Page 9

... QA QC SYNC Power Management The individual output enable/freeze control of the CY29773 allows the user to implement unique power management schemes into the design. The outputs are stopped in the logic ‘0’ state when the freeze control bits are activated. The serial input register contains one programmable freeze enable bit for 12 of the 14 output clocks ...

Page 10

... Document #: 38-07573 Rev D10 D11 Figure ohm ohm T VTT ohm ohm ohm T VTT t(φ) t(φ) CY29773 ohm ohm T VTT = 3.3V/2. ohm ohm T VTT = 3.3V/2.5V V CMR VDD VDD/2 GND ...

Page 11

... P GND 100% Figure 7. Output Duty Cycle (DC) t SK(O) Figure 8. Output-to-Output Skew, t sk(O) Package Type CY29773 VDD VDD/2 GND VDD VDD/2 GND Product Flow Industrial, –40°C to +85°C Industrial, –40°C to 85°C Industrial, –40°C to +85°C Industrial, –40°C to 85°C ...

Page 12

... The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. CY29773 51-85158-** ...

Page 13

... Document History Page Document Title:CY29773 2.5V or 3.3V, 200-MHz, 12-Output Zero Delay Buffer Document Number: 38-07573 REV. ECN No. Issue Date ** 129007 09/02/03 *A 404290 See ECN Document #: 38-07573 Rev. *A Orig. of Change Description of Change RGL New Data Sheet RGL Added pb-free devices added typical data for period jitter ...

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