3.0 Pin Description and Configuration ................................................................................................................................................ 13
4.0 Clocking, Resets, and Power Management .................................................................................................................................. 22
5.0 System Interrupts .......................................................................................................................................................................... 34
8.0 Host Bus Interface (HBI) ............................................................................................................................................................... 76
9.0 Host MAC ...................................................................................................................................................................................... 86
10.0 Serial Management ................................................................................................................................................................... 109
11.0 IEEE 1588 Hardware Time Stamp Unit .................................................................................................................................... 125
12.0 General Purpose Timer & Free-Running Clock ........................................................................................................................ 131
Appendix A: Data sheet Revision History ......................................................................................................................................... 304
The Microchip Web Site .................................................................................................................................................................... 306
Customer Change Notification Service ............................................................................................................................................. 306
Customer Support ............................................................................................................................................................................. 306
Product Identification System ........................................................................................................................................................... 307
2008-2016 Microchip Technology Inc.
DS00002287A
-page 3
LAN9312
1.0
1.1
100BT
ADC
ALR
BLW
BM
BPDU
Byte
CSMA/CD
CSR
CTR
DA
DWORD
EPC
FCS
FIFO
FSM
GPIO
HBI
HBIC
Host
IGMP
Inbound
Level-Triggered Sticky Bit
PREFACE
General Terms
100BASE-T (100Mbps Fast Ethernet, IEEE 802.3u)
Analog-to-Digital Converter
Address Logic Resolution
Baseline Wander
Buffer Manager - Part of the switch fabric
Bridge Protocol Data Unit - Messages which carry the Spanning Tree
Protocol information
8-bits
Carrier Sense Multiple Access / Collision Detect
Control and Status Registers
Counter
Destination Address
32-bits
EEPROM Controller
Frame Check Sequence - The extra checksum characters added to the end
of an Ethernet frame, used for error detection and correction.
First In First Out buffer
Finite State Machine
General Purpose I/O
Host Bus Interface. The physical bus connecting the LAN9312 to the host.
Also referred to as the Host Bus.
Host Bus Interface Controller. The hardware module that interfaces the
LAN9312 to the HBI.
External system (Includes processor, application software, etc.)
Internet Group Management Protocol
Refers to data input to the LAN9312 from the host
This type of status bit is set whenever the condition that it represents is
asserted. The bit remains set until the condition is no longer true, and the
status bit is cleared by writing a zero.
Least Significant Bit
Least Significant Byte
Medium Dependant Interface
Media Independent Interface with Crossover
Media Independent Interface
Media Independent Interface Management
MAC Interface Layer
Multi-Level Transmission Encoding (3-Levels). A tri-level encoding method
where a change in the logic level represents a code bit “1” and the logic
output remaining at the same level represents a code bit “0”.
Most Significant Bit
Most Significant Byte
Non Return to Zero Inverted. This encoding method inverts the signal for a
“1” and leaves the signal unchanged for a “0”
Not Applicable
No Connect
Organizationally Unique Identifier
lsb
LSB
MDI
MDIX
MII
MIIM
MIL
MLT-3
msb
MSB
NRZI
N/A
NC
OUI
DS00002287A
-page 4
2008-2016 Microchip Technology Inc.
LAN9312
Outbound
PIO cycle
PISO
PLL
PTP
RESERVED
Refers to data output from the LAN9312 to the host
Program I/O cycle. An SRAM-like read or write cycle on the HBI.
Parallel In Serial Out
Phase Locked Loop
Precision Time Protocol
Refers to a reserved bit field or address. Unless otherwise noted, reserved
bits must always be zero for write operations. Unless otherwise noted, values
are not guaranteed when reading reserved bits. Unless otherwise noted, do
not read or write to reserved addresses.
Real-Time Clock
Source Address
Start of Frame Delimiter - The 8-bit value indicating the end of the preamble
of an Ethernet frame.
Serial In Parallel Out
Serial Management Interface
Signal Quality Error (also known as “heartbeat”)
Start of Stream Delimiter
User Datagram Protocol - A connectionless protocol run on top of IP
networks
Universally Unique IDentifier
16-bits
RTC
SA
SFD
SIPO
SMI
SQE
SSD
UDP
UUID
WORD
1.2
Buffer Types
Table 1-1
describes the pin buffer type notation used in
Section 3.0, "Pin Description and Configuration," on page 13
and throughout this document.
TABLE 1-1:
Buffer Type
IS
O8
OD8
O12
OD12
PU
BUFFER TYPES
Description
Schmitt-triggered Input
Output with 8mA sink and 8mA source
Open-drain output with 8mA sink
Output with 12mA sink and 12mA source
Open-drain output with 12mA sink
50uA (typical) internal pull-up. Unless otherwise noted in the pin description, internal pull-
ups are always enabled.
Note:
Internal pull-up resistors prevent unconnected inputs from floating. Do not rely on
internal resistors to drive signals external to the LAN9312. When connected to a
load that must be pulled high, an external resistor must be added.
PD
50uA (typical) internal pull-down. Unless otherwise noted in the pin description, internal pull-
downs are always enabled.
Note:
Internal pull-down resistors prevent unconnected inputs from floating. Do not rely
on internal resistors to drive signals external to the LAN9312. When connected to
a load that must be pulled low, an external resistor must be added.
[i=s]This post was last edited by mmmllb on 2015-3-10 10:00[/i] But it's so expensive...[size=2]Sports:[/size][size=2]Starting from 2588. [/size] [size=2]The Sport series case is made of lightweight s...
I often find that the forum is attacked, and sometimes the website cannot be accessed. What’s going on?And when I click this,appearsTemplate file: /Data/webapps/home/my/./template//showmessage.htm Not...
I am now debugging the TCC7901 chip board in TELECHIPS. TCC7901 has 6 PORTs but only 4 channels. My boss wants me to use all 4 channels in 2.2 BSP. However, 2.2 BSP uses CH0 and CH2 for debugging and ...
I have been planning to make a quadcopter for a long time, but due to the high cost, I have only been collecting information and have not been able to start. This time, I was fortunate to see the DIY ...
SAM4E has many counting clocks, among which there is a real-time clock RTT (Real-time Timer), which is a 32-bit counter with a programmable 16-bit prescaler. There are two clock sources, namely the sl...
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
introduction
1 The significance of using RTOS on MSP430
It is understandable that it is meaningless to use RTOS on MSP430. Because the hardware resources of MSP430 are limited (for exampl...[Details]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
In recent years, with the rapid development of the information industry, dot matrix LED display screens have been widely used in various advertising and information display systems such as the fina...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
Today, the value of electronic components in cars accounts for 15-20% of the total vehicle. In the future, this proportion may be as high as 30-40% as more safety electronics, fuel consumption and ...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
LED light sources have many environmental advantages, but early products still have certain technical bottlenecks in heat dissipation and high brightness design that cannot be broken through....[Details]
With the continuous advancement of various technologies in the field of measurement and control, the baseband subsystem of general measurement and control equipment has entered the fourth generation o...[Details]
Talking
京公网安备 11010802033920号
EEWORLD
