Microchip VSC8244 Handleiding

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VSC8244
Data Sheet
Quad 10/100/1000BASE-T PHY with RGMII and RTBI Interfaces
VMDS-10108 Revision 4.2
February 2019
Microsemi Corporation One Enterprise, Aliso Viejo, CA 92656 USA
sales.support@microsemi.com www.microsemi.com
1 of 3
1 General Description
Ideally suited for high port density Gigabit Ethernet switches
and routers, or multi-port Network Interface Cards (NICs),
Microsemi's VSC8244 integrates four low-power, triple speed
(10BASE-T, 100BASE-TX, and 1000BASE-T) Ethernet
transceivers in thermally-enhanced, 260-pin plastic Ball Grid
Array (BGA).
The VSC8244 physical layer "PHY" IC leverages Microsemi’s
proprietary 4th generation DSP Technology. Microsemi's
highly optimized DSP architecture yields industry leading
performance at less than 640mW per port, supporting
1000BASE-T with respect to all worst case impairments
(NEXT, FEXT, Echo, and system noise sources).
Each of the four independent triple-speed transceivers
features pin-efficient RGMII and RTBI compliant MAC
interfaces. On-chip RGMII/RTBI series termination resistors
simplify board design challenges by improving signal integrity
and completely eliminating dozens of external series
termination resistors on the receive side of the MAC
interface. In addition, the VSC8244 integrates, for the first
time in the industry, all copper media side line termination
resistors.
The VeriPHY® suite has the ability to identify the cable length
and operating conditions and to isolate common faults that
can occur on Cat5 twisted pair cabling.
2 System Diagrams
Figure 1. VSC8244 System Diagram
Management
I/F
1.2 v
MDC, MDIO
MDINT#_n
Serial
I/F
VSC8244
Quad 10/100/1000BASE-T
Transceiver
3.3 v
Optional
EEPROM
RGMII, RTBI
10/100/1000 Mbps
Ethernet MAC
10/100/1000 Mbps
Ethernet MAC
10/100/1000 Mbps
Ethernet MAC
10/100/1000 Mbps
Ethernet MAC
RJ-45
SimpliPHY d
Magnetics
RJ-45
SimpliPHY d
Magnetics
RJ-45
SimpliPHY d
Magnetics
RJ-45
SimpliPHY d
Magnetics
VSC8244
Data Sheet
VMDS-10108 Revision 4.2
February 2019
2 of 3
3
4 Applications
3 Features Benefits
• Quad, low power, 10/100/1000BASE-T in a
19mm HS-BGA package
• Catalyzes market for low-cost & high density LAN, WAN,
SAN, & MAN switches
• Lowest power consumption in the industry at less than
640mW/port (1000BASE-T mode)
• Eliminates heatsinks and fans for Gigabit to the desktop
LAN switches
• Supports PICMG 2.16 and 3.0 Ethernet backplanes at
less than 500 mW/port
• Lowest power mode reduces supply costs
• Patented, low EMI line driver with integrated line side
termination resistors
• Removes 12 passive components per PHY*, reducing
PCB area & cost by 50%
• Saves up to 50% on magnetic module cost with
SimpliPHY’d magnetics
• Enables magnetic-less PICMG backplane designs
• Supports RGMII v1.3 (2.5V & 3.3V) & v2.0 (1.5V HSTL) • Compatible with a wide variety of parallel I/F switch ICs
• User-programmable RGMII timing compensation • Simplifies PCB layout; eliminates PCB trombones
• Compliant with IEEE 802.3 (10BASE-T, 100BASE-TX,
1000BASE-T) specifications
• Ensures seamless deployment throughout copper
networks with industry’s highest tolerance to noise and
substandard cable plants
• >10kB jumbo frame support with programmable
synchronization FIFOs
• Provides for maximum jumbo frame sizes in custom
SAN and LAN systems
• Five Direct drive LEDs per port with on-chip filtering or
serial LED interface option
• Eliminates external components and EMI issues
• Three user configuration options: 1) optional serial
EEPROM, 2) hardware configuration pins, or 3) Serial
Management Interface (SMI)
• Offers design engineer a solution to fit any unmanaged
or managed system requirement
• Full suite of BIST, near-end, and far-end loopback
modes
• Simplifies comprehensive in-system test to ensure
highest product quality
• VeriPHY® cable diagnostics • Identifies cable length and operating conditions to
isolate common faults that can occur on Cat5 twisted
pair cabling
• Automatic detection and correction of cable pair swaps,
pair skew and pair polarity, along with HP Auto MDI/
MDI-X crossover function
• Compatible with 1st generation 1000BASE-T PHYs.
• Supports Auto MDI/MDI-X even when Autonegotiation is
disabled
• Manufactured in advanced 0.13µm, 3.3V/1.2V digital
CMOS process
• Most cost effective technology eliminates more
expensive analog process variants
* or, 576 components for a 48-port switch
• High Port Density 10/100/1000BASE-T Switches • Gigabit Ethernet-based SAN, NAS, and MAN Systems
• Workgroup LAN Switches & Routers • High Performance Workstations & Multi-Port Server NICs
• Backplane Applications such as PICMG 2.16, 3.0
VSC8244
Data Sheet
VMDS-10108 Revision 4.2
February 2019
3 of 3
3
5 Device Block Diagram
Figure 2. VSC8244 Block Diagram1
1n = port number (0, 1, 2, 3)
CONTROL
LED INTERFACE
PCS DECODER
PCS ENCODER
TIMING RECOVERY
+
DAC HYBRID
VGAADCFFE
PMA (DSP Data Pump)PCS MDI (Analog Front End )
4
TX FIR
X4
NC1 NC2 NC3 EC
LED[4:0 ]_n
CLK125MAC
REF_FILT
XTAL1/2
REF_REX T
TXD[3:0]_n
TX_CTL_n
TX_CLK_n
RXD[3:0]_n
Port 3
Port 2
Port 1
TRELLIS
DECODER
PAM -5 SYMBOL
MAPPER ,
SCRAMBLER
PAM- 5 SYMBOL DE-
MAPPER ,
DESCRAMBLER
Port 0
RX_CTL_n
RX_CLK_n
RGMII
or
RTBI
Interface Selection and Autonegotiation
TXVP_A_n
TXVN_ A_n
TXVP_B_n
TXVN_ B_n
TXVP_C_n
TXVN_C_n
TXVP_D_n
TXVN_D_n
SYSTEM
JTAG
TEST
MANAGER
MANAGEMENT
INTERFACE
TDI
TRST
TMS
TCK
TDO
CMODE[7:0]
RESET
EECLK
EEDAT
MDINT_n
MDIO
MDC
SOFT_RESET
CLK125micro

Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: VSC8244

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