VSC8211XVW Vitesse Semiconductor Corp, VSC8211XVW Datasheet - Page 152

• Manufacturer Part Number: VSC8211XVW
• Description: IC PHY 10/100/1000 SGL 117-LBGA
• Manufacturer: Vitesse Semiconductor Corp
• Type: PHY Transceiverr

Specifications of VSC8211XVW

• Number Of Drivers/receivers: 1/1
• Protocol: Gigabit Ethernet
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 117-LBGA
• Case: BGA
• Dc: 07+
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 907-1023

In this operating mode, the VSC8211 expects the following relationship between TXCLK and TD on the transmit side and
RXCLK and RD on the receive side (assuming internal delay on the transmit side and receive side internal delay set to 2.0ns):
No “trombone shaped” traces are required when using this approach. Advantages of this compensated timing over RGMII v2.0:
• Simplified board design
• More compact routes (less board area)
• Lower EMI emissions
• Greater possible distance between MAC and PHY (simplifying design and layout)
• Improved signal integrity at a given distance between the MAC and PHY
VMDS-10105 Revision 4.1
October 2006
RXC (at transmitter)
TXC (at transmitter)
RXC (at receiver)
TXC (at receiver)
RD[7:4][3:0]
TD[7:4][3:0]
RX[8:5][3:0]
TX[8:5][3:0]
RX[9]RX[4]
TX[9]TX[4]
RXCTL
TXCTL
Figure 44. RGMII/RTBI Compensated AC Timing and Multiplexing
TX[3:0]
RD[3:0]
RX[3:0]
RD[3:0]
TX[4]
TXEN
RD[4]
RXDV
TX[9]
TXERR
RD[9]
RXER
TX[8:5]
TD[7:4]
RX[8:5]
RD[7:4]
152 of 165
T
T
T
Setup
Setup
Setup
R
T
T
T
T
T
T
Hold
Hold
Hold
Hold
T
T
RXC with internal
delay added
R
R
TXC with internal
delay added
Datasheet
VSC8211