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参数资料
型号： KSZ8851-16MLL TR
厂商： Micrel Inc
文件页数： 21/84页
文件大小： 0K
描述： IC MAC CTLR 1PORT W/BUS 48LQFP
产品培训模块： KSZ8851 10/100 Embedded Controllers
标准包装： 1,000
控制器类型： 以太网控制器，MAC/PHY
接口： 总线
电源电压： 1.8V，2.5V，3.3V
工作温度： 0°C ~ 70°C
安装类型： 表面贴装
封装/外壳： 48-LQFP
供应商设备封装： 48-LQFP（7x7）
包装： 带卷 (TR)
Micrel, Inc.
KSZ8851-16MLL/MLLI
March 11, 2014
28
Revision 2.2
Driver Routine for Transmit Packet from Host Processor to KSZ8851-16MLL
The transmit routine is called by the upper layer to transmit a contiguous block of data through the Ethernet controller. It is
user’s choice to decide how the transmit routine is implemented. If the Ethernet controller encounters an error while
transmitting the frame, it’s the user’s choice to decide whether the driver should attempt to retransmit the same frame or
discard the data. The following Figures 7 shows the step-by-step for single transmit packets from host processor to
KSZ8851-16MLL.
Figure 7. Host TX Single Frame in Manual Enqueue Flow Diagram
Host receives an Ethernet pkt from
upper layer and prepares transmit pkt
data (data, data_length, frame ID).
The transmit queue frame format is
shown in Table 5
Check if KSZ8851M TXQ
Memory size is available for this
transmit pkt?
(Read TXMIR Reg)
Write an “1” to RXQCR[3] reg to enable
TXQ write access, then Host starts
write transmit data (control word, byte
count and pkt data) to TXQ memory.
This is moving transmit data from Host
to KSZ8851M TXQ memory until whole
pkt is finished
Write an “0” to RXQCR[3] reg to end
TXQ write access
Write an “1” to TXQCR[0] reg to issue a
transmit command (manual-enqueue)
to the TXQ. The TXQ will transmit this
pkt data to the PHY port
Option to Read ISR[14] reg, it indicates
that the TXQ has completed to transmit
at least one pkt to the PHY port, then
Write “1” to clear this bit
Yes
No
Write the total amount of TXQ buffer
space which is required for next
transmit frame size in double-word
count in TXNTFSR[15:0] register
Set bit 1=1 in TXQCR register to
enable the TXQ memory available
monitor
Wait for interrupt
and check if the bit 6=1
(memory space available)
in ISR register
?
Yes
No
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相关代理商/技术参数
参数描述
KSZ8851-16MLLU 功能描述:以太网 IC Single-Port Ethernet Controller (Automotive Grade) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8851-16MLLU TR 功能描述:以太网 IC Single-Port Ethernet Controller (Automotive Grade) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8851-16MQL 功能描述:以太网 IC Single Ethernet Port + Generic (16-bit) Bus Interface(Lead Free) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8851-16MQL-EVAL 功能描述:以太网开发工具 Single Ethernet Port + Generic (16-bit) Bus Interface(Lead Free) Eval Board RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压:
KSZ8851-16MQLI 功能描述:以太网 IC Single Ethernet Port + Generic (16-bit) Bus Interface(Lead Free, I-Temp) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
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