參數(shù)資料
型號： KSZ8051MLL-EVAL
廠商： Micrel Inc
文件頁數(shù)： 30/48頁
文件大小： 0K
描述： BOARD EVALUATION FOR KSZ8051MLL
標(biāo)準(zhǔn)包裝： 1
主要目的： 接口，以太網(wǎng) PHY
嵌入式： 否
已用 IC / 零件： KSZ8051MLL
已供物品： 板
相關(guān)產(chǎn)品： 576-3888-6-ND - TXRX PHY 10/T100 3.3V MII 48LQFP
576-3888-1-ND - TXRX PHY 10/T100 3.3V MII 48LQFP
576-3888-2-ND - TXRX PHY 10/T100 3.3V MII 48LQFP
KSZ8051MLL TR-ND - TXRX PHY 10/T100 3.3V MII 48LQFP
576-3731-ND - TXRX PHY 10/T100 3.3V MII 48LQFP
其它名稱： 576-3864
2008 Microchip Technology Inc.
DS22060B-page 39
MCP413X/415X/423X/425X
5.3
Shutdown
Shutdown is used to minimize the device’s current
consumption. The MCP4XXX has two methods to
achieve this. These are:
The Hardware Shutdown pin is backwards compatible
with the MCP42XXX devices.
5.3.1
HARDWARE SHUTDOWN PIN
(SHDN)
The SHDN pin is available on the dual potentiometer
devices. When the SHDN pin is forced active (VIL):
The P0A and P1A terminals are disconnected
The P0W and P1W terminals are simultaneously
connect to the P0B and P1B terminals,
respectively (see Figure 5-2)
The Serial Interface is NOT disabled, and all
Serial Interface activity is executed
The Hardware Shutdown pin mode does NOT corrupt
the values in the Volatile Wiper Registers nor the
TCON register. When the Shutdown mode is exited
(SHDN pin is inactive (VIH)):
The device returns to the Wiper setting specified
by the Volatile Wiper value
The TCON register bits return to controlling the
terminal connection state
FIGURE 5-2:
Hardware Shutdown
Resistor Network Configuration.
5.3.2
TERMINAL CONTROL REGISTER
(TCON)
The Terminal Control (TCON) register is a volatile
register used to configure the connection of each
resistor network terminal pin (A, B, and W) to the
Resistor
Network.
This
register
is
shown
in
The RxHW bits forces the selected resistor network
into the same state as the SHDN pin. Alternate
low-power configurations may be achieved with the
RxA, RxW, and RxB bits.
5.3.3
INTERACTION OF SHDN PIN AND
TCON REGISTER
Figure 5-3 shows how the SHDN pin signal and the
RxHW bit signal interact to control the hardware
shutdown of each resistor network (independently).
Using the TCON bits allows each resistor network (Pot
0 and Pot 1) to be individually “shutdown” while the
hardware pin forces both resistor networks to be “shut-
down” at the same time.
FIGURE 5-3:
RxHW bit and SHDN pin
Interaction.
A
B
W
Resistor
Network
Note:
When the RxHW bit forces the resistor
network into the hardware SHDN state,
the state of the TCON register RxA, RxW,
and RxB bits is overridden (ignored).
When the state of the RxHW bit no longer
forces the resistor network into the hard-
ware SHDN state, the TCON register RxA,
RxW, and RxB bits return to controlling the
terminal connection state. In other words,
the RxHW bit does not corrupt the state of
the RxA, RxW, and RxB bits.
SHDN (from pin)
RxHW
(from TCON register)
To Pot x Hardware
Shutdown Control
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KSZ8051MNL 功能描述:TXRX PHY 10/T100 3.3V MII 32-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1,140 系列:AU 類型:收發(fā)器 驅(qū)動器/接收器數(shù):1/1 規(guī)程:CAN 電源電壓:5.3 V ~ 27 V 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SO 包裝:管件 其它名稱:935267940512AU5790D14AU5790D14-ND
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