VSC7129TQM

更新时间： 2024-01-04 04:27:31

品牌	Logo	应用领域
VITESSE		光纤中继器
页数	文件大小	规格书
12页	177K
描述
Telecom Circuit, 1-Func, GAAS, PQFP44, 10 X 10 MM, PLASTIC, QFP-44

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VSC7129TQM 技术参数

生命周期：	Obsolete	零件包装代码：	QFP
包装说明：	QFP, QFP44,.5SQ,32	针数：	44
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.82	Is Samacsys：	N
JESD-30 代码：	S-PQFP-G44	长度：	10 mm
功能数量：	1	端子数量：	44
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	QFP	封装等效代码：	QFP44,.5SQ,32
封装形状：	SQUARE	封装形式：	FLATPACK
电源：	3.3 V	认证状态：	Not Qualified
座面最大高度：	2.45 mm	子类别：	Other Telecom ICs
最大压摆率：	0.26 mA	标称供电电压：	3.3 V
表面贴装：	YES	技术：	GAAS
电信集成电路类型：	TELECOM CIRCUIT	端子形式：	GULL WING
端子节距：	0.8 mm	端子位置：	QUAD
宽度：	10 mm	Base Number Matches：	1

VSC7129TQM 数据手册

VITESSE

SEMICONDUCTOR CORPORATION

Data Sheet

Family of Repeater/Retimer and Port

Bypass Circuits for Fibre Channel

VSC7127/VSC7129

Functionality

Device Configurations

Four devices are specified in this datasheet: VSC7127R, VSC7127T, VSC7129R and VSC7129T. The

VSC7127 is pin-compatible to the HDMP-0451. The VSC7129 is pin compatible with the HDMP-0452. The

VSC712xR is configured as a Repeater when pin 12, MODE, is LOW, or a Retimer when HIGH. The

VSC712xT is configured as a Retimer when pin 12, MODE, is LOW, or a Repeater when HIGH.

Port Bypass Circuits

The VSC712x contains six Port Bypass Circuits (PBCs) which are 2-to-1 multiplexers used to steer serial

signals. Each PBC, PBCx has a single select line, SELx, which when HIGH, selects the external input, Ix, to

PBCx and when LOW, selects the output of the previous PBC. PCB5 does not have an external input but selects

between the output of the CRU (when SEL5 is HIGH) and the output of PBC0 (when SEL5 is LOW). These

controls allow FC-AL loops to include a functional device on the loop or exclude a non-functional device from

the loop.

FibreTimer^™Clock Recovery Unit—Repeater Mode

The Clock Recovery Unit (CRU) is a digital PLL which extracts the clock from the incoming data and sam-

ples the data with the extracted clock. In repeater mode, the output of the CRU is synchronized to the recovered

clock and has improved signal quality due to amplification of the signal and attenuation of jitter. Latency

through the device is quite low, just a few bit times. Multiple repeaters can be cascaded without accumulation

of jitter. MODE determines whether the CRU is a Repeater or a Retimer.

FibreTimer^™Clock Recovery Unit —Retimer Mode

MODE may configure the CRU as a retimer where the recovered data is placed into an elasticity buffer.

Data is taken out of the elasticity buffer and retransmitted synchronously to the local REFCLK. For Fibre Chan-

nel data, Fill words will be added and dropped in the elasticity buffer in order to accomodate the differences in

speed between the incoming data and the REFCLK. The retimer does not transfer jitter from the input to the

output but has longer latency, up to 4 word times, through the device.

FibreTimer^™Clock Recovery Unit—Bypass Mode

When SEL5 is LOW, PBC5 selects the output of PBC0 and the CRU is unused. In this mode, the CRU is

powered down to reduce power dissipation. If the part will be used only in this mode, REFCLK and MODE are

ignored and can be left open. If the CRU is bypassed, the Signal Detect Unit is disabled and the output is LOW.

Signal Detection

A signal detect unit (SDU) monitors IO+/- and the output of the CRU to determine if there is a valid Fibre

Channel signal present. The SIGDET is updated every 160 bits (an “interval”) with the previous interval’s status

of three different Signal Detect Units: analog signal amplitude (ASDU), run length check (RLLSDU), Ordered

Set density (OSSDU). If the input amplitude is less than 200mV (differential), ASDU will be set LOW. If the

input amplitude is greater than 400mV, ASDU will be asserted HIGH. If a run length violation occurs (more

than 5 consecutive ones or zeros), the RLLSDU will be set LOW and stay LOW until the occurrence of a valid

G52298-0, Rev 4.3

05/01/01

Page 3

Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com

Internet: www.vitesse.com

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与VSC7129TQM相关器件

型号	品牌	获取价格	描述	数据表
VSC7130RC	ETC	获取价格	Telecomm/Datacomm
VSC7132	VITESSE	获取价格	Link Replicator for Fibre Channel, Gigabit Ethernet and HDTV
VSC7132-01	VITESSE	获取价格	Link Replicator for Fibre Channel, Gigabit Ethernet and HDTV
VSC7132YB	VITESSE	获取价格	Link Replicator for Fibre Channel, Gigabit Ethernet and HDTV
VSC7133	VITESSE	获取价格	10-bit Transceiver for Fibre Channel and Gigabit Ethernet
VSC7133QU	VITESSE	获取价格	10-bit Transceiver for Fibre Channel and Gigabit Ethernet
VSC7135	VITESSE	获取价格	1.25Gbits/sec Gigabit Ethernet Transceiver
VSC7135QN	VITESSE	获取价格	1.25Gbits/sec Gigabit Ethernet Transceiver
VSC7135QU	VITESSE	获取价格	1.25Gbits/sec Gigabit Ethernet Transceiver
VSC7139	VITESSE	获取价格	Quad Transceiver for Gigabit Ethernet and Fibre Channel

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