Transceiver
Solutions
Alaska
廬
X
Dual 10 Gigabit XAUI to XGMII Transceiver
Octal 3.1875 Gbps SERDES
88X2080
PRODUCT OVERVIEW
The Marvell
簍
Alaska
簍
X device (88X2080) is a CMOS Dual 10 Gigabit Ethernet XAUI and Octal 3.125/3.1875 Gbps
SERDES device. The 88X2080 transceiver performs all of the necessary XAUI to XGMII functions for 10 Gigabit
Ethernet (GbE) and 10 Gigabit Fiber Channel applications, while achieving very low power dissipation. The parallel
and serial interfaces on the device are IEEE 802.3ae 10 Gigabit Media Independent Interface (XGMII) and 10
Gigabit Attachment Unit Interface (XAUI), respectively.
The Alaska X device incorporates eight lanes operating up to 3.125/3.1875 Gbps, each with a selectable 8B/10B
encoder/decoder. The eight lanes can operate independently from 1.0 to 3.1875 Gbps to support a variety of
backplane applications or can be con脼gured as two 10 Gigabit XAUI channels. The device allows the use of either
62.5, 125 or 156.25/159.375 MHz reference inputs to provide 脽exible clocking. In addition, the device can be
con脼gured as a single XGMII to Dual XAUI device for redundancy applications. The device also supports XAUI
repeater applications.
TX
XGMII - A
RX
IEEE
802.3ae
PCS
Redundancy
and
Repeater
MUX
A
IEEE
802.3ae
PCS
B
MDIO
Management
Interface
XAUI
Quad
SERDES
(XAUI-A)
XAUI
Quad
SERDES
(XAUI-B)
JTAG
Registers
BIST
XAUI A
TXDx[7:0]
TXCx
TX_CLKx
Port 7
Port 6
Port 5
Port 4
Port 3
Port 2
Port 1
Port 0
Input
FIFO
Output
FIFO
8B/10B
Encoder
10B/8B
Decoder
Clock
Synthesizer
Serializer
Deserializer
Clock/Data
Recovery
JTAG
Registers
BIST
TRST#
TCK
TDI
TMS
TDO
TXxP
TXxN
RXxP
RXxN
TX
XGMII - B
RX
XAUI B
RXDx[7:0]
RXCx
RX_CLKx
MDC
MDIO
INT#
LED[7:0]
CLK+/-
SEL_FREQ
RESET#
TRST#
TCK
TDI
TMS
TDO
CONFIG[4:0]
LED
CLK/RESET
MDC
MDIO
INT#
LED[7:0]
CLK+/-
SEL_FREQ
RESET#
MDIO
Management
Interface
LED
CLK/RESET
CONFIG[4:0]
Fig 1. Alaska X 10 Gigabit Transceiver (88X2080)
Block Diagram: XAUI Modes
FEATURES
樓
IEEE 802.3ae XGMII parallel interface
樓
IEEE 802.3ae XAUI serial interface
樓
1.0 to 3.1875 Gbps data rates
樓
Selectable 62.5/125/156.25/159.375 MHz reference frequencies
樓
Selectable 8B/10B encoder/decoder
樓
Independent clock generator and CDR per channel
樓
Programmable pre-emphasis
樓
On-chip serial terminations (50 ohms)
樓
Low power dissipation: 2.4W; Redundancy mode: 2.0W
樓
1.5V or 1.8V XGMII HSTL input/output (I/O)
樓
IEEE 802.3ae MDIO interface
Fig 2. Diagram: 10 Gigabit Transceiver (88X2080)
Block Alaska X Backplane Modes
BENEFITS
樓
IEEE compliant interfaces ensure interoperability
樓
IEEE compliant interfaces ensure interoperability
樓
Backward compatibility for backplane applications
樓
Provides timing 脽exibility
樓
Enables proprietary coding
樓
Provides robust performance
樓
Operation over long PCB traces and copper cable
樓
Allow for fewer external components
樓
Lowers overall system power
樓
Provides interface 脽exibility
樓
Eases programmability
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