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PDF VSC8634 Data sheet ( Hoja de datos )
| Número de pieza | VSC8634 | |
| Descripción | Quad Port 10/100/1000BASE-T PHY | |
| Fabricantes | Vitesse Semiconductor | |
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VSC8634
Quad Port 10/100/1000BASE-T PHY
with SGMII and Advanced SerDes MAC
Interface
Datasheet
VMDS-10272
Revision 4.1
June 2009
Confidential
1 page  
VSC8634 Datasheet
Contents
4.5.2 Functions and Related CMODE Pins ........................................................... 67
4.5.3 CMODE Resistor Values............................................................................ 69
5 Electrical Specifications ...................................................................70
5.1 DC Characteristics .............................................................................................. 70
5.1.1 VDDIO at 3.3 V ...................................................................................... 70
5.1.2 VDDIO at 2.5 V ...................................................................................... 71
5.1.3 VDDIO at 1.8 V ...................................................................................... 71
5.1.4 VDD33 at 3.3 V ...................................................................................... 72
5.1.5 DC Characteristics for MAC Outputs........................................................... 72
5.1.6 DC Characteristics for MAC Inputs............................................................. 73
5.1.7 LED Pins................................................................................................ 73
5.1.8 JTAG Pins .............................................................................................. 74
5.2 Current Consumption.......................................................................................... 74
5.3 AC Characteristics .............................................................................................. 75
5.3.1 Reference Clock Input ............................................................................. 75
5.3.2 Clock Output .......................................................................................... 76
5.3.3 AC Characteristics for MAC Outputs ........................................................... 76
5.3.4 AC Characteristics for MAC Inputs ............................................................. 76
5.3.5 JTAG Interface ....................................................................................... 77
5.3.6 SMI Interface ......................................................................................... 77
5.3.7 Device Reset .......................................................................................... 78
5.3.8 Serial LEDs ............................................................................................ 79
5.4 Operating Conditions .......................................................................................... 80
5.5 Stress Ratings ................................................................................................... 80
6 Pin Descriptions ...............................................................................82
6.1 Pin Diagram ...................................................................................................... 82
6.2 Pin Identifications............................................................................................... 83
6.3 Pins by Function................................................................................................. 84
6.3.1 GPIO .................................................................................................... 84
6.3.2 JTAG ..................................................................................................... 84
6.3.3 Miscellaneous Pins .................................................................................. 85
6.3.4 Power Supply ......................................................................................... 86
6.3.5 SerDes MAC Interface ............................................................................. 87
6.3.6 Serial Management Interface.................................................................... 87
6.4 Twisted Pair Interface ......................................................................................... 88
6.5 Pins by Number ................................................................................................. 90
6.6 Pins by Name .................................................................................................... 93
7 Package Information........................................................................96
7.1 Package Drawing................................................................................................ 96
7.2 Thermal Specifications ........................................................................................ 98
7.3 Moisture Sensitivity ............................................................................................ 98
8 Design Considerations .....................................................................99
8.1 Broadcast Writes ................................................................................................ 99
8.2 Enabling LED Blinking After Reset ......................................................................... 99
8.3 100/1000BASE-T Amplitude Compensation .......................................................... 100
8.4 Increase 10BASE-T Performance......................................................................... 100
8.5 Performance Optimization for 100BASE-TX and 1000BASE-T Slave .......................... 102
8.6 Enable SGMII Version 1.8 .................................................................................. 103
9 Ordering Information .....................................................................104
Revision 4.1
June 2009
Confidential
Page 5
5 Page 
1
1.1
VSC8634 Datasheet
Introduction
Introduction
This document consists of descriptions and specifications for both functional and
physical aspects of the VSC8634.
In addition to datasheets, the Vitesse Web site offers an extensive library of
documentation, support files, and application materials specific to each device. The
address of the Vitesse Web site is www.vitesse.com.
Register and Bit Conventions
This document refers to registers by their address and bit number in decimal notation.
A range of bits is indicated with a colon. For example, a reference to address 26, bits 15
through 14 is shown as 26.15:14.
A register with an E attached (example 27E) means it is an extended page register. A
register with a G attached (example 13G) means it is a GPIO page register.
Bit numbering follows the IEEE standard with bit 15 being the most significant bit and
bit 0 being the least significant bit.
Revision 4.1
June 2009
Confidential
Page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet VSC8634.PDF ] | |
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