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| 型号： | KSZ8851-16MLL-EVAL |
| 厂商： | Micrel Inc |
| 文件页数： | 36/84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
41
Revision 2.2
On-Chip Bus Control Register (0x20 – 0x21): OBCR
This register controls the on-chip bus clock speed for the KSZ8851-16MLL. The default of the on-chip bus clock speed is
125MHz. When the external host CPU is running at a higher clock rate, the on-chip bus should be adjusted for the best
performance.
Bit
Default Value
R/W
Description
15-7
-
RW
Reserved.
6
0
RW
Output Pin Drive Strength
Bi-directional or output pad drive strength selection.
0: 8 mA; 1: 16 mA
5-3
-
RW
Reserved.
2
0
RW
On-Chip Bus Clock Selection
0: 125MHz (default setting is divided by 1, Bit[1:0]=00)
1: NA (reserved)
1-0
0x0
RW
On-Chip Bus Clock Divider Selection
00: Divided by 1; 01: Divided by 2; 10: Divided by 3; 11: NA (reserved).
For example to contol the bus clock speed as below:
If Bit 2 = 0 and this value is set 00 to select 125 MHz.
If Bit 2 = 0 and this value is set 01 to select 62.5 MHz.
EEPROM Control Register (0x22 – 0x23): EEPCR
To support an external EEPROM, pulled-up the EED_IO pin to High; otherwise, it is pulled-down to Low. If an external
EEPROM is not used, the software programs the host MAC address. If an EEPROM is used in the design, the chip host
MAC address is loaded from the EEPROM immediately after reset. The KSZ8851-16MLL allows the software to access
(read and write) the EEPROM directly; that is, the EEPROM access timing can be fully controlled by the software if the
EEPROM Software Access bit is set.
Bit
Default Value
R/W
Description
15-6
-
RO
Reserved.
5
0
WO
EESRWA EEPROM Software Read or Write Access
0: software read enable to access EEPROM when software access enabled (bit4=1)
1: software write enable to access EEPROM when software access enabled (bit4=1).
4
0
RW
EESA EEPROM Software Access
1: enable software to access EEPROM through bit 3 to bit 0.
0: disable software to access EEPROM.
3
-
RO
EESB EEPROM Status Bit
Data Receive from EEPROM. This bit directly reads the EED_IO pin.
2-0
0x0
RW
EECB EEPROM Control Bits
Bit 2: Data Transmit to EEPROM. This bit directly controls the device’s EED_IO pin.
Bit 1: Serial Clock. This bit directly controls the device’s EESK pin.
Bit 0: Chip Select for EEPROM. This bit directly controls the device’s EECS pin.
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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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