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參數(shù)資料
| 型號(hào)： | KSZ8895MQ |
| 廠商： | Micrel Inc |
| 文件頁(yè)數(shù)： | 55/119頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ETHERNET SW 5PORT 128-PQFP |
| 標(biāo)準(zhǔn)包裝： | 66 |
| 控制器類型： | 以太網(wǎng)開關(guān)控制器 |
| 接口： | MII |
| 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： | 128-BFQFP |
| 供應(yīng)商設(shè)備封裝： | 128-PQFP（14x20） |
| 包裝： | 托盤 |
| 配用： | 576-3871-ND - BOARD EVALUATION FOR KSZ8895MQ |
| 其它名稱： | 576-3753 |
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Micrel, Inc.
KSZ8895MQ/RQ/FMQ
Port 5 MAC 5 Switch SW5-RMII Interface for the KSZ8895RQ
The Reduced Media Independent Interface (RMII) specifies a low pin count Media Independent Interface (MII). The
KSZ8895RQ supports RMII interface at Port 5 switch side and provides a common interface at MAC5 layer in the
device, and has the following key characteristics:
Supports 10Mbps and 100Mbps data rates.
Uses a single 50MHz clock reference (provided internally or externally): in internal mode, the chip provides a
reference clock from the SMRXC pin to the SMTXC pin and provides the clock to the opposite clock input pin
for RMII interface. In external mode, the chip receives 50MHz reference clock from an external oscillator or
opposite RMII interface.
Provides independent 2-bit wide (bi-bit) transmit and receive data paths.
KSZ8895RQ supports MAC5 RMII interfaces at the switch side:
For the detail of SW5-RMII (Port 5 MAC5 RMII) signals connection see the table below:
The KSZ8895RQ can provide a 50MHz reference clock for both MAC to MAC and MAC to PHY RMII interfaces
when SW5-RMII is used in the clock mode of the device (default with strap pin LED2_2 internal pull-up for the
clock mode).
The KSZ8895RQ can also receive a 50MHz reference clock from an external 50MHz clock source or opposite
RMII to SW5-RMII SMTXC pin when the device is set to normal mode (the strap pin LED2_2 is pulled down).
When the device is strapped to normal mode by pin LED2_2 pull-down, the reference clock comes from SMTXC
which will be used as the device’s clock source. The external 25MHz crystal clock from pins X1/X2 will be ignored.
Note: In normal mode, the 50MHz clock from SMTXC will be used as the clock source for whole device. The PHY5
PMTXC/PMREFCLK pin cannot be used as the clock source for whole device. The pin of PMTXC/PMREFCLK can
receive the 50MHz clock from PMRXC when the device is strapped to normal mode and an external 50MHz
reference clock comes in from pin SMTXC. In normal mode, the 50MHz clock on pin SMRXC can be disabled by
register, and the PMRXC 50MHz clock can be used when P5-RMII interface is used.
There is a register 12 bit 6 to monitor the status of the device for the clock mode or normal mode.
When using an external 50MHz clock source as RMII reference clock, the KSZ8895RQ should be set to normal
mode by pulling down its LED2_2 strap-in pin first before power up reset or warm reset. The normal mode of the
KSZ8895RQ device will start to work when it gets the 50MHz reference clock from pin SMTXC/SMREFCLK from an
external 50MHz clock source. For the RMII connection examples, please refer to app note in the design kit.
March 12, 2014
40
Revision 1.7
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KSZ8895MQ_12 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII interface |
| KSZ8895MQ-EVAL | 功能描述:以太網(wǎng)開發(fā)工具 5-Port 10/100 Ethernet Switch with 1x MII Interface - 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: |
| KSZ8895MQI | 功能描述:以太網(wǎng) IC 5-Port 10/100 Ethernet Switch with 1x MII Interface (Industrial Grade) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8895MQXCA | 功能描述:Ethernet Switch 10/100 Base-T/TX I2C, SPI Interface 128-PQFP (14x20) 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:I2C，SPI 標(biāo)準(zhǔn):10/100 Base-T/TX 電壓 - 電源:1.8V，2.5V，3.3V 電流 - 電源:129mA 工作溫度:0°C ~ 70°C 封裝/外殼:128-BFQFP 供應(yīng)商器件封裝:128-PQFP（14x20） 標(biāo)準(zhǔn)包裝:66 |
| KSZ8895MQXIA | 功能描述:Ethernet Switch 10/100 Base-T/TX I2C, SPI Interface 128-PQFP (14x20) 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:I2C，SPI 標(biāo)準(zhǔn):10/100 Base-T/TX 電壓 - 電源:1.8V，2.5V，3.3V 電流 - 電源:129mA 工作溫度:-40°C ~ 85°C 封裝/外殼:128-BFQFP 供應(yīng)商器件封裝:128-PQFP（14x20） 標(biāo)準(zhǔn)包裝:66 |
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