VSC7148(2000) 查看數據表（PDF） - Vitesse Semiconductor
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产品描述 (功能)
生产厂家
VSC7148
(Rev.:2000)
(Rev.:2000)
Vitesse Semiconductor
VSC7148 Datasheet PDF : 2 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
16-Port JBOD Loop Chip for
1.0625 Gb/s FC-AL Storage Applications
Product Brief
VSC7148
while isolating error conditions and performing loop diagnostics on the Snoop Loop. When coupled with the
SSC100's initiator features, the VSC7148 can provide fault isolation conditions and JBOD quality characteris-
tics back to the host in real-time. When used in a managed JBOD application, the VSC7148/SSC100 chipset
allows fault isolation down to the lowest Field Replaceable Unit (FRU) to reduce downtime and support costs,
and lead to higher availability.
General Description
Along with the sixteen PBCs, four FibreTimer digital Clock Recovery Units (CRUs) can be configured as
Repeaters or Retimers. Repeaters, which attenuate jitter, are normally located at the input to the loop and
retransmit recovered data synchronously to the recovered clock. Retimers, which eliminate jitter transfer, are
normally located at the outputs of the loop and retransmit data synchronously to the reference clock in order to
provide complete Fibre Channel jitter compliance at the output.
VSC7148 Block Diagram (When not using the I2C Interface)
DRIVE 0
SD0
M1
SI1+
SI1-
PORT1
SO1+
SO1-
REFI+
REFI-
HALF/FULL
Software
SDU0
CDR0(R)
1
1
0
MUX1
0
PBC0
CDR1(T)
53.125/106.25MHz
REFO0
REFO1
CMU
1.0625 GHz
CAP0
CAP1
0.1uF
DRIVE 7
DRIVE 8
DRIVE 15
NOT SHOWN:
Two-Wire Interface
Signal Detection
JTAG
INT#
1
0
PBC7
0
MUX3 1
MUX4
1
1
0
0 PBC8
1
0
PBCF
CDR2(T)
MUX2 0
1
CD0R3(R)
SDU3
SO2+
SO2-
PORT2
SI2+
SI2-
S/D
M2
SD3
The VSC7148 is supported by an API within our enclosure management Software Development Kit
(SDK). The SDK includes software to implement a FC transport and SES diagnostic environment. In addition,
the SDK also includes a System Services module which provides APIs to the peripheral functionality (inter-
rupts, timers etc.) in the Enclosure Management Controller. The System Services also includes driver libraries
for popular I2C devices such as National's LM75, LM78, and many others.
For More Information: www.vitesse.com or email: prodinfo@vitesse.com or TEL: 1-800-VITESSE
Notice: Vitesse Semiconductor Corporation reserves the right to make changes in its products, specifications or other information at any time without
prior notice. Therefore the reader is cautioned to confirm that this Product Brief is current prior to placing any orders. The company assumes no respon-
sibility for any circuitry described other than circuitry entirely embodied in the Vitesse product. Please contact Vitesse Semiconductor to obtain the latest
product status and most recent specification for this product.
Warning: Vitesse Semiconductor Corporation’s product are not intended for use in life support appliances, devices or systems. Use of a Vitesse prod-
uct in such applications without the written consent is prohibited.
Page 2
© VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Rev. 1.0
5/25/00
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