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| 型号： | KSZ9021RN |
| 厂商： | Micrel Inc |
| 文件页数： | 54/58页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 10/100/1000 SGL 48QFN |
| 特色产品： | KSZ9021RN Single-port Gigabit Transceiver |
| 标准包装： | 260 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 8/8 |
| 规程： | 千兆位以太网 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-VFQFN 裸露焊盘 |
| 供应商设备封装： | 48-QFN（7x7） |
| 包装： | 托盘 |
| 配用： | 576-3874-ND - BOARD EVALUATION FOR KSZ9021RN |
| 其它名称： | 576-3637 KSZ9021RN-ND |
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MCP444X/446X
DS22265A-page 58
2010 Microchip Technology Inc.
6.2.7
GENERAL CALL
The General Call is a method that the “Master” device
can communicate with all other “Slave” devices. In a
Multi-Master application, the other Master devices are
operating in Slave mode. The General Call address
has two documented formats. These are shown in
Figure 6-11. We have added a MCP44XX format in this
figure as well.
This will allow customers to have multiple I2C Digital
Potentiometers on the bus and have them operate in a
synchronous fashion (analogous to the DAC Sync pin
functionality). If these MCP44XX 7-bit commands
conflict with other I2C devices on the bus, then the
customer will need two I2C busses and ensure that the
devices are on the correct bus for their desired
application functionality.
Dual Pot devices can not update both Pot0 and Pot1
from a single command. To address this, there are
General Call commands for the Wiper 0, Wiper 1, and
the TCON registers.
Table 6-3 shows the General Call Commands. Three
commands are specified by the I2C specification and
are not applicable to the MCP44XX (so command is
Not Acknowledged) The MCP44XX General Call
Commands are Acknowledge. Any other command is
Not Acknowledged.
TABLE 6-3:
GENERAL CALL COMMANDS
Note:
Only one General Call command per issue
of the General Call control byte. Any
additional General Call commands are
ignored and Not Acknowledged.
7-bit
Command
(1, 2, 3)
Comment
‘1000 00d’b Write Next Byte (Third Byte) to Volatile
Wiper 0 Register
‘1001 00d’b Write Next Byte (Third Byte) to Volatile
Wiper 1 Register
‘1100 00d’b Write Next Byte (Third Byte) to TCON
Register
‘1000 010’b
or
‘1000 011’b
Increment Wiper 0 Register
‘1001 010’b
or
‘1001 011’b
Increment Wiper 1 Register
‘1000 100’b
or
‘1000 101’b
Decrement Wiper 0 Register
‘1001 100’b
or
‘1001 101’b
Decrement Wiper 1 Register
Note 1:
Any other code is Not Acknowledged.
These codes may be used by other
devices on the I2C bus.
2:
The 7-bit command always appends a “0”
to form 8-bits.
3:
“d” is the D8 bit for the 9-bit write value.
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| KSZ9021RN-EVAL | 功能描述:以太网开发工具 Gigabit Ethernet Transceiver with RGMII - Evaluation 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: |
| KSZ9021RNI | 功能描述:以太网 IC Gigabit Ethernet Transceiver with RGMII, 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 |
| KSZ9031MNX | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:The KSZ9031MNX is a completely integrated triple-speed (10Base-T/100Base-TX/1000Base-T) Ethernet physicallayer transceiver for transmission and reception of data on standard CAT-5 unshielded twisted pair (UTP) cable. |
| KSZ9031MNXCA | 功能描述:以太网 IC 1-Port Gigabit Ethernet PHY 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 |
| KSZ9031MNXCA TR | 功能描述:以太网 IC 1-Port Gigabit Ethernet PHY 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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