VSC7130 Ver la hoja de datos (PDF) - Vitesse Semiconductor
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VSC7130 Datasheet PDF : 22 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
Dual Repeater/Retimer
for Fibre Channel and Gigabit Ethernet
Figure 3: Active Copper GBIC Module
Data Sheet
VSC7130
+TX_DAT
-TX_DAT
TX_DISABLE
TX_FAULT
+RX_DAT
-RX_DAT
RX_LOS
MOD_DEF0
MOD_DEF1
MOD_DEF2
VSC7130
SI+ CDR0
TX+
SI- Repeater
TX-
TXDIS
SO+ CDR1
RX+
SO- Repeater
RX-
SDET
OSC
SERIAL
EEPROM
TX+
TX-
RX+
RX-
Functionality
Note this datasheet does not completely describe the VSC7130. A companion document, the VSC7130
User’s Manual describes additional applications issues and goes into great depth regarding the Two-Wire Inter-
face and internal register operation.
Notation
All I/O pin names are in bold. All register bit names are italicized. Differential signals can be identified
individually, e.g., I0+ and I0-, or together, e.g., I0. Signals and circuits which are repeated are generically
named using an ‘x’ to denote “any channel”, e.g., TXx for any Transmit pins. All registers are identified by
underlining, e.g., CDRxC and the address for each referenced register will be listed immediately following the
register name (i.e. CDRxC-20h).
Clock Multiplier Unit and Reference Clock
A reference clock is needed for the clock multiplier unit (CMU) in order to generate the internal baud rate
clock. The VSC7130 is used for both Fibre Channel (1.0625Gb/s) and Gigabit Ethernet (1.25Gb/s) applications.
The HALF/FULL signal indicates whether the reference clock is 1/20th of the baud rate (HIGH) or 1/10th of
the baud rate (LOW). Table 1 indicates the valid combinations of the HALF/FULL signal and reference clock
frequency. Combinations not listed in the table will result in abnormal functionality.
Table 1: Reference Clock Frequency Selection
HALF / FULL Pin Frequency (MHz)
HIGH
53.125
LOW
106.25
HIGH
62.5
LOW
125.0
All Other Combinations
Fibre Channel @ 1.0625Gb/s
Fibre Channel @ 1.0625Gb/s
Gigabit Ethernet @ 1.25Gb/s
Gigabit Ethernet @ 1.25 Gb/s
Not Allowed.
Application
Page 4
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
G52297-0, Rev 4.0
04/02/01
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