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| 型号： | KSZ8851-16MLL-EVAL |
| 厂商： | Micrel Inc |
| 文件页数： | 17/84页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION KSZ8851-16MLL |
| 产品培训模块： | KSZ8851 10/100 Embedded Controllers |
| 标准包装： | 1 |
| 系列： | LinkMD® |
| 主要目的： | 接口，以太网控制器（PHY 和 MAC） |
| 嵌入式： | 否 |
| 已用 IC / 零件： | KSZ8851-16MLL |
| 主要属性： | 1 个端口，100BASE-TX/10BASE-T |
| 次要属性： | 8/16 位接口，LinkMD 线缆诊断 |
| 已供物品： | 板，文档 |
| 产品目录页面： | 1081 (CN2011-ZH PDF) |
| 相关产品： | 576-3438-ND - IC CTLR MAC/PHY NON PCI 128PQFP 576-3253-ND - IC CTLR MAC/PHY NON-PCI 128-PQFP 576-3252-ND - IC CTLR MAC/PHY NON-PCI 48-LQFP |
| 其它名称： | 576-3292 |
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Micrel, Inc.
KSZ8851-16MLL/MLLI
March 11, 2014
24
Revision 2.2
Bus Interface Unit (BIU)
The BIU host interface is a generic shared data bus interface, designed to communicate with embedded processors. No
glue logic is required when it talks to various standard asynchronous buses and processors.
Supported Transfers
In terms of transfer type, the BIU can support asynchronous transfer or SRAM-like slave mode. To support the data
transfers, the BIU provides a group of signals:
Shared Data bus SD[15:0] for Address, Data and Byte Enable, Command (CMD), Chip Select Enable (CSN), Read
(RDN), Write (WRN) and Interrupt (INTRN).
Physical Data Bus Size
The BIU supports an 8-bit or 16-bit host standard data bus. Depending on the size of the physical data bus, the KSZ8851-
16MLL can support 8-bit or 16-bit data transfers.
For example,
For a 16-bit data bus mode, the KSZ8851-16MLL allows an 8-bit and 16-bit data transfer.
For an 8-bit data bus mode, the KSZ8851-16MLL only allows an 8-bit data transfer.
The KSZ8851-16MLL supports internal data byte-swap. This means that the system/host data bus HD[7:0] just connect to
SD[7:0] for an 8-bit data bus interface. For a 16-bit data bus, the system/host data bus HD[15:8] and HD[7:0] only need to
connect to SD[15:8] and SD[7:0] respectively.
Table 4 describes the BIU signal grouping.
Signal
Type
Function
SD[15:0]
I/O
Shared Data Bus
Data D[15:0] -> SD[15:0] access when CMD=0. Address A[7:2] -> SD[7:2] and Byte Enable
BE[3:0] -> SD[15:12] access when CMD=1 in 16-bit mode. Address A[7:0] -> SD[7:0] only
access when CMD=1 in 8-bit mode (Shared data bus SD[15:8] must be tied to low in 8-bit bus
mode).
CMD
Input
Command Type
This command input decides the SD[15:0] shared data bus access cycle information.
CSN
Input
Chip Select Enable
Chip Enable asserted (low) indicates that the shared data bus access is enabled.
INTRN
Output
Interrupt
This pin is asserted to low when interrupt occurred.
RDN
Input
Asynchronous Read
This pin is asserted to low during read cycle.
WRN
Input
Asynchronous Write
This pin is asserted to low during write cycle.
Table 4. Bus Interface Unit Signal Grouping
Little and Big Endian Support
The KSZ8851-16MLL supports either Little- or Big-Endian microprocessor. The external strap pin 10 (EESK) is used to
select between two modes. The KSZ8851-16MLL operates in Little Endian when this pin is pulled-down or in Big Endian
when this pin is pulled-up.
When this pin 10 is no connect or tied to GND, the bit 11 (Endian mode selection) in RXFDPR register can be used to
program either Little (bit11=0) Endian mode or Big (bit11=1) Endian mode.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| KSZ8851-16MLL-EVAL | 制造商:Micrel Inc 功能描述:BOARD EVALUATION FOR KSZ8851-16MLL |
| KSZ8851-16MLLI | 功能描述:以太网 IC 10/100BT Ethernet MAC + PHY with Generic (8, 16-bit) Bus Interface (I-Temp, 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 |
| KSZ8851-16MLLI TR | 功能描述:以太网 IC 10/100BT Ethernet MAC + PHY with Generic (8, 16-bit) Bus Interface (I-Temp, 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 |
| KSZ8851-16MLLJ | 功能描述:以太网 IC Single-Port Ethernet MAC Controller with 8/16-Bit Non-PCI Interface (125C support) 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 |
| KSZ8851-16MLLJ_10 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:Single-Port Ethernet MAC Controller with 8-Bit or 16-Bit Non-PCI Interface |
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