CYS25G0101DX-ATC Cypress Semiconductor Corp, CYS25G0101DX-ATC Datasheet

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CYS25G0101DX-ATC

Manufacturer Part Number
CYS25G0101DX-ATC
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of CYS25G0101DX-ATC

Number Of Transmitters
1
Number Of Receivers
1
Power Supply Requirement
Single
Package Type
TQFP
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Operating Temperature (max)
70C
Operating Temperature (min)
0C
Dual Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Dual Supply Voltage (min)
Not RequiredV
Lead Free Status / Rohs Status
Not Compliant

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Part Number:
CYS25G0101DX-ATC
Quantity:
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Features
Cypress Semiconductor Corporation
Document Number: 38-02009 Rev. *L
SONET OC-48 operation
Bellcore and ITU jitter compliance
2.488 GBaud serial signaling rate
Multiple selectable loopback or loop through modes
Single 155.52 MHz reference clock
Transmit FIFO for flexible data interface clocking
16-bit parallel-to-serial conversion in transmit path
Serial-to-16-bit parallel conversion in receive path
Synchronous parallel interface
Internal transmit and receive phase-locked loops (PLLs)
Differential CML serial input
Differential CML serial output
Direct interface to standard fiber optic modules
Less than 1.0W typical power
120-pin 14 mm × 14 mm TQFP
Standby power saving mode for inactive loops
0.25μ BiCMOS technology
Pb-free packages available
LVPECL compliant
HSTL compliant
50 mV input sensitivity
100
Source matched for 50
transmission lines)
Ω
internal termination and DC restoration
Ω
transmission lines (100
198 Champion Court
Ω
differential
Functional Description
The CYS25G0101DX SONET OC-48 Transceiver is a commu-
nications building block for high speed SONET data communica-
tions. It provides complete parallel-to-serial and serial-to-parallel
conversion, clock generation, and clock and data recovery
operations in a single chip optimized for full SONET compliance.
Transmit Path
New data is accepted at the 16-bit parallel transmit interface at
a rate of 155.52 MHz. This data is passed to a small integrated
FIFO to enable flexible transfer of data between the SONET
processor and the transmit serializer. As each 16-bit word is read
from the transmit FIFO, it is serialized and sent out to the high
speed differential line driver at a rate of 2.488 Gbits per second.
Receive Path
As serial data is received at the differential line receiver, it is
passed to a clock and data recovery (CDR) PLL that extracts a
precision low jitter clock from the transitions in the data stream.
This bit rate clock is used to sample the data stream and receive
the data. Every 16-bit times, a new word is presented at the
receive parallel interface along with a clock.
Parallel Interface
The parallel I/O interface supports high speed bus communica-
tions using HSTL signaling levels to minimize both power
consumption and board landscape. The HSTL outputs are
capable of driving unterminated transmission lines of less than
70 mm and terminated 50Ω transmission lines of more than twice
that length.
The CYS25G0101DX Transceiver’s parallel HSTL I/O can also
be configured to operate at LVPECL signaling levels. This is
done externally by changing V
circuit at the termination of the transceiver’s parallel output
interface.
SONET OC-48 Transceiver
San Jose
,
CA 95134-1709
DDQ
, V
CYS25G0101DX
Revised January 26, 2009
REF
and creating a simple
408-943-2600
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CYS25G0101DX-ATC Summary of contents

Page 1

... Cypress Semiconductor Corporation Document Number: 38-02009 Rev. *L SONET OC-48 Transceiver Functional Description The CYS25G0101DX SONET OC-48 Transceiver is a commu- nications building block for high speed SONET data communica- tions. It provides complete parallel-to-serial and serial-to-parallel conversion, clock generation, and clock and data recovery operations in a single chip optimized for full SONET compliance ...

Page 2

... LOOPA OUT ± Document Number: 38-02009 Rev. *L (155.52 MHz) REFCLK ± TXCLKO TX PLL X16 ÷ Bit-Clock Lock-to-Data/ Clock Control Logic PWRDN LOCKREF SD LFI CYS25G0101DX (155.52 MHz) RXCLK RXD[15:0] 16 Output Register ÷ 16 Shifter Recovered Bit-Clock RX CDR Retimed PLL Data Lock-to-Ref DIAGLOOP IN ± ...

Page 3

... Interface Document Number: 38-02009 Rev. *L Multiple loopback and loop through modes are available for both diagnostic and normal operation. For systems containing redundant SONET rings that are maintained in standby, the CYS25G0101DX may also be dynamically powered down to conserve system power. CYS25G0101DX 16 TXD[15:0] ...

Page 4

... Pins 113 and 119 are either no connect or VSSQ. Use VSSQ for compatibility with next generation of OC-48 SERDES devices. Pin 116 are either no connect or VCCQ. Use VCCQ for compatibility with next generation of OC-48 SERDES devices. Document Number: 38-02009 Rev. *L Top View Top View CYS25G0101DX CYS25G0101DX CYS25G0101DX [ ...

Page 5

... The TXCLKI samples the data, TXD [15:0], on the rising edge of the clock cycle. TXCLKO HSTL Clock output Transmit Clock Output. Divide the selected transmit bit rate clock used to coordinate byte wide transfers between upstream logic and the CYS25G0101DX. V Input Analog Reference Voltage for HSTL Parallel Input Bus. V REF ...

Page 6

... Table 1. CYS25G0101DX OC-48 SONET Transceiver (continued) Pin Name I/O Characteristics Loop Control Signals DIAGLOOP LVTTL input Diagnostic Loopback Control. When HIGH, transmit data is routed through the receive clock and data recovery then presented at the RXD[15:0] outputs. When LOW, received serial data is routed through the receive clock and data recovery then presented at the RXD[15:0] outputs ...

Page 7

... CYS25G0101DX also provides various loopback functions. CYS25G0101DX Transmit Data Path Operating Modes The transmit path of the CYS25G0101DX supports 16-bit wide data paths. Phase Align Buffer Data from the input register is passed to a phase align buffer (FIFO). This buffer is used to absorb clock phase differences between the transmit input clock and the internal character clock ...

Page 8

... RESET and FIFO_RST signals should be asserted LOW along with PWRDN signal to ensure low power dissipation. LVPECL Compliance The CYS25G0101DX HSTL parallel I/O can be configured to LVPECL compliance with slight termination modifications. On the transmit side of the transceiver, the TXD[15:0] and TXCLKI are made LVPECL compliant by setting LVPECL signal – ...

Page 9

... Low = –3.0V, High = 0 Max Max Max MHz CC Test Conditions [5] Test Conditions Max. IN IEHH Min. IN IELL CYS25G0101DX CC (1.5). Power supply ramping may occur /V relationship is CC DDQ V V DDQ CC [4] 1.4V to 1.6V 3.3V ± 10% [4] 3.3V ± 10% Min Max Unit 2.4 V 0.4 V –20 –90 mA 2.1 V – ...

Page 10

... Figure 3. Differential Waveform Definition )-V (-) Test Conditions V = min –4 min 4 OUT V = max DDQ IN DDQ V = max DDQ max MHz DDQ CYS25G0101DX Min Max Unit – 0.5 V – 0. – 1.2 V – 0 560 1600 mV 280 800 mV 25 1000 mV 50 2000 1.2 V Min Max Unit V – ...

Page 11

... LVPECL Input Test Waveform Figure 5. AC Test Loads 100Ω 100Ω 100Ω OUT+ ≤ (Includes fixture and OUT– probe capacitance) (b) CML AC Test Load CYS25G0101DX V ICHH 80% 80% 20% V ICLL < 150 ps V IEHH 80% 20% V IELL < 1.0 ns 1.5V R1 OUTPUT C L ...

Page 12

... RXCLk rise time and fall times are measured at the percentile region of the rising and falling edge of the clock signal. 7. The 155.52 MHz Reference Clock Phase Noise Limits for the CYS25G0101DX are shown in 8. +20 ppm is required to meet the SONET output frequency specification. ...

Page 13

... Jitter Waveforms Figure 6. Jitter Transfer Waveform of CYS25G0101DX Figure 7. Jitter Tolerance Waveform of CYS25G0101DX Figure 8. CYS25G0101DX Reference Clock Phase Noise Limits Notes 12. The bench jitter measurements are performed using an Agilent Omni bert SONET jitter tester. Document Number: 38-02009 Rev. *L CYS25G0101DX [12] . [12] Page [+] Feedback ...

Page 14

... RXD[15:0] RXD[15:0] Typical IO Terminations Limiting Amp 0.1 μ F OUT+ OUT– 0.1 μ S25G0101DX 0.1 μ F OUT+ OUT– 0.1 μ F Note 13. Serial output of CYS25G0101DX is source matched to 50 Document Number: 38-02009 Rev. *L Figure 9. Transmit Interface Timing TXCLKI TXCLKI TXCLKI TXCLKIDL TXCLKIDL ...

Page 15

... Zo=50 Ω 82 Ω 0.1uF Figure 17. Clock Oscillator Termination CY S25G0101DX VCC Zo=50 Ω 130 Ω VCC 82 Ω 130 Ω Zo=50 Ω 82 Ω Reference Cloc k Input CYS25G0101DX FRAMER HSTL INPUT FRAMER HSTL INPUT FRAMER LVPECL INPUT Refcloc k Inter nall y Biased Page [+] Feedback ...

Page 16

... Speed Ordering Code Standard CYS25G0101DX-AEXC Standard CYS25G0101DX-AEXI Package Diagram Figure 18. 120-Pin Exposed Pad TQFP (14X14X1.0) AE120 (001-48723) Document Number: 38-02009 Rev. *L Package Name Package Type AE120 120-pin Pb-Free TQFP AE120 120-pin Pb-Free TQFP CYS25G0101DX Operating Range Commercial Industrial 001-48723 ** Page [+] Feedback ...

Page 17

... Document History Page Document Title: CYS25G0101DX SONET OC-48 Transceiver Document Number: 38-02009 Submission REV. ECN NO. Date ** 105847 03/22/01 *A 108024 06/20/01 *B 111834 12/18/01 *C 112712 02/06/02 *D 113791 04/24/02 *E 115940 05/22/02 *F 117906 09/06/02 *G 119267 10/17/02 *H 121019 11/06/02 *I 122319 12/30/02 *J 124438 02/13/03 *K 1309983 07/27/07 *L 2647349 01/26/09 Document Number: 38-02009 Rev ...

Page 18

... All products and company names mentioned in this document may be the trademarks of their respective holders. PSoC Solutions psoc.cypress.com General clocks.cypress.com Low Power/Low Voltage Precision Analog LCD Drive image.cypress.com CAN 2.0b USB Revised January 26, 2009 CYS25G0101DX psoc.cypress.com/solutions psoc.cypress.com/low-power psoc.cypress.com/precision-analog psoc.cypress.com/lcd-drive psoc.cypress.com/can psoc.cypress.com/usb Page [+] Feedback ...

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