Pins Description of KSZ8842-PMQL.............................................................................................................................. 11
Functional Overview: PCI Bus Interface Unit............................................................................................................... 20
PCI Bus Interface.......................................................................................................................................................... 20
TXDMA Logic and TX Buffer Manager ......................................................................................................................... 20
RXDMA Logic and RX Buffer Manager ........................................................................................................................ 20
Power Management...................................................................................................................................................... 21
MDI/MDI-X Auto Crossover .......................................................................................................................................... 21
Auto Negotiation ........................................................................................................................................................... 23
Functional Overview: MAC and Switch......................................................................................................................... 25
MAC Operation ............................................................................................................................................................. 28
Inter Packet Gap (IPG) ................................................................................................................................................. 28
Late Collision ................................................................................................................................................................ 28
Spanning Tree Support................................................................................................................................................. 29
IGMP Support ............................................................................................................................................................... 30
Port Mirroring Support................................................................................................................................................... 30
IEEE 802.1Q VLAN Support ......................................................................................................................................... 31
QoS Priority Support ..................................................................................................................................................... 31
DiffServ based Priority .................................................................................................................................................. 32
Rate Limiting Support ................................................................................................................................................... 32
MAC Filtering Function ................................................................................................................................................. 33
Loop back Support........................................................................................................................................................ 33
Host Communication ...................................................................................................................................................... 35
Host Communication Descriptor Lists and Data Buffers .............................................................................................. 35
PCI Control & Status Registers ..................................................................................................................................... 43
MAC DMA Transmit Control Register (MDTXC Offset 0x0000) ................................................................................... 43
MAC DMA Receive Control Register (MDRXC Offset 0x0004).................................................................................... 44
Interrupt Status Register (INTST Offset 0x002C) ......................................................................................................... 48
MAC Additional Station Address Low Register (MAAL0-15) ........................................................................................ 49
MAC Additional Station Address High Register (MAAH0-15)....................................................................................... 49
MAC/PHY and Control Registers ................................................................................................................................... 50
MAC Address Register Low (0x0200): MARL .............................................................................................................. 50
MAC Address Register Middle (0x0202): MARM ......................................................................................................... 50
MAC Address Register High (0x0204): MARH ............................................................................................................. 50
Switch ID and Enable Register (Offset 0x0400): SIDER .............................................................................................. 52
Switch Global Control Register 1 (Offset 0x0402): SGCR1 ......................................................................................... 53
Switch Global Control Register 2 (Offset 0x0404): SGCR2 ......................................................................................... 54
Switch Global Control Register 3 (Offset 0x0406): SGCR3 ......................................................................................... 55
Switch Global Control Register 4 (Offset 0x0408): SGCR4 ......................................................................................... 56
Switch Global Control Register 5 (Offset 0x040A): SGCR5 ......................................................................................... 56
Switch Global Control Register 6 (Offset 0x0410): SGCR6 ......................................................................................... 57
Switch Global Control Register 7 (0x0412): SGCR7 .................................................................................................... 58
Priority Control Register 1 (Offset 0x0480): TOSR1..................................................................................................... 59
TOS Priority Control Register 2 (Offset 0x482): TOSR2 .............................................................................................. 59
TOS Priority Control Register 3 (Offset 0x484): TOSR3 .............................................................................................. 60
Comprehensive Times, The logic for up does not match a standard flip-flop The program code is as follows. I think there are still some grammatical errors. I hope the experts can give me some advice. o...
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The compilation of Qt 5.2.1 mainly refers to the following materialsarmsdr.blogspot.com/2014/01/bare-metal-qt-52-on-beaglebone-black_10.htmlqt-project.org/doc/qt-5/configure-options.htmlMy main steps ...
Cypress Semiconductor Corp. recently announced that sales of its Programmable System-on-Chip (PSoC) mixed-signal array devices have exceeded 100 million units, a figure that fully demonstrates the wid...
China's new energy vehicles are in a transition period from research and development to real industrial development. In 2012, with the intensive launch of new energy vehicle policy planning, the de...[Details]
0. Introduction
In daily life, we often see some special-purpose vehicles. When these vehicles pass through intersections, they often obtain the right of way at intersections by temporarily op...[Details]
I. Introduction
In the field of power conversion, isolated converters (forward, flyback, and double-ended) with low output DC voltage all use MOSFET as the rectifier device. Since these devi...[Details]
This paper establishes a fuel cell engine test platform based on the NI integrated hardware and software environment. This platform can realize the test and control of fuel cell engines and their a...[Details]
Vertical cavity surface emitting lasers (VCSELs) are gradually replacing traditional edge emitting lasers, especially in low bandwidth and short-distance communication systems where cost factors ar...[Details]
1. With the development of modern industry and the continuous improvement of automation, some medium and large control systems have been greatly facilitated, which not only makes control easier, bu...[Details]
The potentiometer is an adjustable electronic component. The main functions of the potentiometer in the circuit are as follows:
1. Used as a voltage divider
A potentiometer is a continuou...[Details]
With concerns about the growing energy crisis, motor efficiency has become an important and timely topic. This is because motors use 63% to 70% of the electricity produced in the United States and ...[Details]
LED lighting: Basic circuit design can be completed in as little as one day
Semiconductor manufacturers are also getting involved in the LED lighting business. The power circuit of LED req...[Details]
Introduction
Nowadays, people pay more and more attention to the security alarm system, and people have higher and higher requirements for the functions and performance of the alarm. This paper prop...[Details]
Traditional
virtual instruments
consist of a data acquisition
board
based on PCI bus and
corresponding software. However, with
the rapid development of
computer
network techno...[Details]
The DisplayPort interface standard is approved by the Video Electronics Standards Association (VESA) to provide an open, scalable standard for the entire industry. The development of DisplayPort ca...[Details]
The ARINC429 bus is one of the most commonly used communication buses between various subsystems of avionics. As the "skeleton" of modern avionics systems, once the bus system or the attached airbo...[Details]
LED is now known as the fourth generation of light sources. High-power LED has many advantages over traditional light sources in outdoor lighting.
1 LED lamps have high light efficiency
C...[Details]
The power supply is the core component of a computer. Although it is not of high value, all computer components rely on the switching power adapter to provide energy, so the stability of a power su...[Details]
FPGA/CPLD
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