參數(shù)資料
型號(hào): CLRC632
廠商: NXP Semiconductors N.V.
英文描述: Multiple Protocol Contactless Reader IC
中文描述: 多協(xié)議非接觸式讀卡器IC
文件頁數(shù): 94/163頁
文件大?。?/td> 948K
代理商: CLRC632
Philips Semiconductors
Product Specification Rev. 3.0; May 2003
Multiple Protocol Contactless Reader IC
CL RC632
94
Confidential
10.3 Stand By Mode
The Stand By-mode is entered immediately by setting bit
StandBy
in the
Control-Register
. All internal current
sinks are switched off (including the internal digital clock buffer but except the oscillator buffer).
Different from the Hard Power Down-Mode, the digital input-buffers are not separated by the input pads and
keep their functionality. The digital output pins do not change their state.
Different from the Soft Power Down-Mode, the oscillator does not need time to wake up.
After resetting bit
StandBy
in the
Control-Register
it needs 4 clocks on pin OSCIN until the Stand By-Mode is
left indicated by the
StandBy
bit itself. Resetting it does not immediately clear it. It is cleared automatically by
the CL RC632 when the Stand By-Mode is left.
10.4 Receiver Power Down
It is power saving to switch off the receiver circuit when it is not needed and switched it on again right before
data is to be received from the card. This is done automatically by setting bit
RxAutoPD
to 1. If it is set to 0
the receiver is continuously switched on.
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