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VSC7164QQ Datasheet

  • VSC7164QQ

  • Telecommunication IC

  • 16頁

  • ETC

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VITESSE
SEMICONDUCTOR CORPORATION
Target Specification
VSC7164
Features
鈥?Serializes 16 Inputs at 155.52Mb/s onto a
2.488Gb/s Serial Output
鈥?Deserializes a 2.488Gb/s Serial Input to 16
155.52Mb/s Outputs
鈥?Clock Multiplier generates 2.488 GHz clock
from 77.76 or 155.52 MHz Reference Clock
鈥?Digital Clock Recovery Unit has Automatic
Lock-to-Reference Function
2.488Gb/s 16:1 / 1:16
Transceiver
鈥?Redundant High Speed I/O
鈥?Suitable for Both Coaxial and Optical
Link Applications
鈥?Low Power Operation - 2.5 W Max
鈥?Single +3.3V Supply
鈥?100 Pin, 14 mm Thermally Enhanced PQFP
General Description
The VSC7164 is a 2.488Gb/s transceiver optimized for non-SONET Telecom applications. It accepts 16
155.52Mb/s serial inputs streams, latches them on the rising edge of BCLK, which runs at 155.52 MHz, and
serializes the data onto the high speed differential outputs at a 2.488Gb/s. The VSC7164 also samples serial
receive data on the high speed differential inputs, recovers the clock and data, deserializes it onto 16 serial out-
puts at 155.52Mb/s and outputs a recovered clocks at 155.52 MHz. The VSC7164 contains on-chip PLL cir-
cuitry for synthesis of the baud-rate transmit clock and extraction of the clock from the received serial stream.
Redundant high speed I/O are controlled by separate enables for the dual transmitters and a single select
line for the dual receivers. A loopback mode is provided for on-board self-test functionality. A mode control
input configures the reference clock speed to 77.76 or 155.52 MHz.
VSC7164 Block Diagram
LPBK
Serial Data (2.488Gb/s)
16
R0:15
155.52Mb/s
QD
Serial to
Parallel
Retimed
Data
Recovered
Clock
QD
Clock
Recovery
4:1
RBC+
RBC-
155.52 MHz
16
梅
16
RXA+
RXA-
RXB+
RXB-
SELB
ENTXA
TXA+
TXA-
TXB+
TXB-
ENTXB
TCLKO+
TCLKO-
T0:15
SYNC
BCLK+
BCLK-
REFCLK+
REFCLK-
REFMODE
155.52Mb/s
In
Reg.
Parallel
to Serial
Serial Data (2.488Gb/s)
DQ
Synthesized
Clock
(2.488GHz)
155.52 MHz
155.52 or
77.76 MHz
Divider
155.52 MHz
CMU
x16/x32
1 = 155.52 MHz
0 = 77.76 MHz
G52244-0, Rev. 1.5
02/18/99
漏
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 鈥?805/388-3700 鈥?FAX: 805/987-5896
Page 1
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