參數(shù)資料
型號(hào)： KSZ8851SNL TR
廠商： Micrel Inc
文件頁(yè)數(shù)： 5/80頁(yè)
文件大?。?/td> 0K
描述： IC CTLR MAC/PHY NON-PCI 32-MLF
產(chǎn)品培訓(xùn)模塊： KSZ8851 10/100 Embedded Controllers
標(biāo)準(zhǔn)包裝： 1
控制器類型： 以太網(wǎng)控制器，MAC/PHY
接口： 總線
電源電壓： 1.8V，2.5V，3.3V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 32-VFQFN 裸露焊盤，32-MLF?
供應(yīng)商設(shè)備封裝： 32-MLF?（5x5）
包裝： 標(biāo)準(zhǔn)包裝
產(chǎn)品目錄頁(yè)面： 1081 (CN2011-ZH PDF)
配用： 576-3293-ND - BOARD EVALUATION KSZ8851SNL
其它名稱： 576-3299-6
Micrel, Inc.
KSZ8851SNL/SNLI
August 2009
13
M9999-083109-2.0
Functional Description
The KSZ8851SNL is a single-chip Fast Ethernet MAC/PHY controller consisting of a 10/100 physical layer transceiver
(PHY), a MAC, and an industry standard Serial Peripheral Interface (SPI). The host CPU is via SPI interface to read/write
KSZ8851SNL internal registers either byte (8-bit), word (16-bit) or double word (32-bit) and to access KSZ8851SNL
RXQ/TXQ FIFOs for packet receive/transmit.
The KSZ8851SNL is fully compliant to IEEE802.3u standards.
Functional Overview
Power Management
The KSZ8851SNL supports enhanced power management feature in low power state with energy detection to ensure low-
power dissipation during device idle periods. There are four operation modes under the power management function
which is controlled by two bits in PMECR (0xD4) register as shown below:
PMECR[1:0] = 00 Normal Operation Mode
PMECR[1:0] = 01 Energy Detect Mode
PMECR[1:0] = 10 Soft Power Down Mode
PMECR[1:0] = 11 Power Saving Mode
Table 1 indicates all internal function blocks status under four different power management operation modes.
Power Management Operation Modes
KSZ8851SNL
Function Blocks
Normal mode
Power saving mode
Energy detect mode
Soft power down mode
Internal PLL Clock
Enabled
Disabled
Tx/Rx PHY
Enabled
Rx unused block disabled
Energy detect at Rx
Disabled
MAC
Enabled
Disabled
SPI Interface
Enabled
Disabled
Table 1. Internal Function Blocks Status
Normal Operation Mode
This is the default setting bit[1:0]=00 in PMECR register after the chip power-up or hardware reset (pin 67). When
KSZ8851SNL is in this normal operation mode, all PLL clocks are running, PHY and MAC are on and the host interface is
ready for CPU read or write.
During the normal operation mode, the host CPU can set the bit[1:0] in PMECR register to transit the current normal
operation mode to any one of the other three power management operation modes.
Energy Detect Mode
The energy detect mode provides a mechanism to save more power than in the normal operation mode when the
KSZ8851SNL is not connected to an active link partner. For example, if cable is not present or it is connected to a
powered down partner, the KSZ8851SNL can automatically enter to the low power state in energy detect mode. Once
activity resumes due to plugging a cable or attempting by the far end to establish link, the KSZ8851SNL can automatically
power up to normal power state in energy detect mode.
Energy detect mode consists of two states, normal power state and low power state. While in low power state, the
KSZ8851SNL reduces power consumption by disabling all circuitry except the energy detect circuitry of the receiver. The
energy detect mode is entered by setting bit[1:0]=01 in PMECR register. When the KSZ8851SNL is in this mode, it will
monitor the cable energy. If there is no energy on the cable for a time longer than pre-configured value at bit[7:0] Go-
Sleep time in GSWUTR register, KSZ8851SNL will go into a low power state. When KSZ8851SNL is in low power state, it
will keep monitoring the cable energy. Once the energy is detected from the cable and is continuously presented for a
time longer than pre-configured value at bit[15:8] Wake-Up time in GSWUTR register, the KSZ8851SNL will enter either
the normal power state if the auto-wakeup enable bit[7] is set in PMECR register or the normal operation mode if both
auto-wakeup enable bit[7] and wakeup to normal operation mode bit[6] are set in PMECR register.
相關(guān)PDF資料
PDF描述
PIC16F676-E/SL IC MCU FLASH 1KX14 W/AD 14SOIC
LTC4278IDKD#PBF IC PD IEEE 802.3AT 25.5W 32-DFN
KSZ8873MML IC ETHERNET SWITCH 3PORT 64-LQFP
V72A3V3C264BG2 CONVERTER MOD DC/DC 3.3V 264W
V72A3V3C264BG CONVERTER MOD DC/DC 3.3V 264W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
KSZ8852HLE-EVAL 功能描述:KSZ8852HLE - Interface, Ethernet Control Evaluation Board 制造商:microchip technology 系列:- 零件狀態(tài):有效 主要用途:接口，以太網(wǎng)控制 嵌入式:否 使用的 IC/零件:KSZ8852HLE 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1
KSZ8852HLEWA 功能描述:Ethernet Switch 10/100 Base-FX/T/TX PHY Ethernet Interface 64-LQFP (10x10) 制造商:microchip technology 系列:- 包裝:托盤 零件狀態(tài):有效 協(xié)議:以太網(wǎng) 功能:開關(guān) 接口:以太網(wǎng) 標(biāo)準(zhǔn):10/100 Base-FX/T/TX PHY 電壓 - 電源:3.3V 電流 - 電源:- 工作溫度:-40°C ~ 115°C 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:160
KSZ8852HLEYA 功能描述:Ethernet Switch 10/100 Base-FX/T/TX PHY Ethernet Interface 64-LQFP (10x10) 制造商:microchip technology 系列:- 包裝:托盤 零件狀態(tài):有效 協(xié)議:以太網(wǎng) 功能:開關(guān) 接口:以太網(wǎng) 標(biāo)準(zhǔn):10/100 Base-FX/T/TX PHY 電壓 - 電源:3.3V 電流 - 電源:- 工作溫度:-40°C ~ 115°C 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:160
KSZ8862-100FX-EVAL 功能描述:以太網(wǎng)開發(fā)工具 KSZ8862-100FX Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評(píng)估:KSZ8873RLL 接口類型:RMII 工作電源電壓:
KSZ8862-10FL-EVAL 功能描述:以太網(wǎng)開發(fā)工具 KSZ8862-10FL Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評(píng)估:KSZ8873RLL 接口類型:RMII 工作電源電壓:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*