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| 型号： | KSZ9021GN |
| 厂商： | Micrel Inc |
| 文件页数： | 28/53页 |
| 文件大小： | 0K |
| 描述： | TXRX ETHERNET GB GMII/MII 64-MLF |
| 标准包装： | 348 |
| 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： | 64-VFQFN 裸露焊盘 |
| 供应商设备封装： | 64-QFN（8x8） |
| 包装： | 托盘 |
| 配用： | 576-3873-ND - BOARD EVALUATION FOR KSZ9021GN |
| 其它名称： | 576-3635 KSZ9021GN-ND |
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MCP434X/436X
DS22233A-page 34
2009 Microchip Technology Inc.
4.2.2.1
Status (STATUS) Register
This register contains 7 status bits. These bits show the
state of the WiperLock bits, the Write Protect bit, and if
an EEPROM write cycle is active. The STATUS register
can
be
accessed
via
the
READ
commands.
Register 4-1 describes each STATUS register bit.
The STATUS register is placed at Address 05h.
REGISTER 4-1:
STATUS REGISTER
R-1
R-0
R-x
R-1
R-x
D8:D7
WL3 (1)
WL2 (1)
EEWA
WL1 (1)
WL0 (1)
—WP (1)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 8-7
D8:D7: Reserved. Forced to “1”
bit 6
WL3: WiperLock Status bit for Resistor Network 3 (Refer to Section 5.3 “WiperLock Technology”
for further information)
The WiperLock Technology bit (WL3) prevents the Volatile and Non-Volatile Wiper 3 addresses and the
TCON1 register bits R3HW, R3A, R3W, and R3B from being written to. High Voltage commands are
required to enable and disable WiperLock Technology.
1
=
Wiper and TCON1 register bits R3HW, R3A, R3W, and R3B of Resistor Network 3 (Pot 3) are
“Locked” (Write Protected)
0
=
Wiper and TCON1 of Resistor Network 3 (Pot 3) can be modified
Note:
The WL3 bit always reflects the result of the last programming cycle to the non-volatile WL3
bit. After a POR/BOR or RESET pin event, the WL3 bit is loaded with the non-volatile WL3
bit value.
bit 5
WL2: WiperLock Status bit for Resistor Network 2 (Refer to Section 5.3 “WiperLock Technology”
for further information)
The WiperLock Technology bit (WL2) prevents the Volatile and Non-Volatile Wiper 2 addresses and the
TCON1 register bits R2HW, R2A, R2W, and R2B from being written to. High Voltage commands are
required to enable and disable WiperLock Technology.
1
=
Wiper and TCON1 register bits R2HW, R2A, R2W, and R2B of Resistor Network 2 (Pot 2) are
“Locked” (Write Protected)
0
=
Wiper and TCON1 of Resistor Network 2 (Pot 2) can be modified
Note:
The WL0 bit always reflects the result of the last programming cycle to the non-volatile WL0
bit. After a POR/BOR or RESET pin event, the WL0 bit is loaded with the non-volatile WL0
bit value.
bit 4
EEWA: EEPROM Write Active Status bit
This bit indicates if the EEPROM Write Cycle is occurring.
1
=
An EEPROM Write cycle is currently occurring. Only serial commands to the Volatile memory
locations are allowed (addresses 00h, 01h, 04h, and 05h)
0
=
An EEPROM Write cycle is NOT currently occurring
Note 1:
Requires a High Voltage command to modify the state of this bit (for Non-Volatile devices only). This bit is
Not directly written, but reflects the system state (for this feature).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| KSZ9021GN TR | 功能描述:以太网 IC Gigabit Ethernet Transceiver with GMII/MII 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 |
| KSZ9021GN-EVAL | 功能描述:以太网开发工具 Gigabit Ethernet Transceiver with GMII/MII - 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: |
| KSZ9021GNI | 功能描述:以太网 IC Gigabit Ethernet Transceiver with GMII/MII, 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 |
| KSZ9021GQ | 功能描述:以太网 IC Gigabit Ethernet Transceiver with GMII/MII, 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 |
| KSZ9021GQI | 功能描述:以太网 IC Gigabit Ethernet Transceiver w/ GMII/MII, 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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