參數資料
型號: CLRC632
廠商: NXP Semiconductors N.V.
英文描述: Multiple Protocol Contactless Reader IC
中文描述: 多協議非接觸式讀卡器IC
文件頁數: 50/163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
50
Confidential
5.2.4.8
ClockQControl Register
controls clock generation for the 90° phase shifted Q-channel clock.
Name: ClockQControl
Address: 0x1F
Reset value: 000XXXXX, 0xXX
7
6
5
4
3
2
1
0
ClkQ180Deg
ClkQCalib
0
ClkQDelay
Access
Rights
r
r/w
r/w
dy
dy
dy
dy
dy
Description of the bits
Bit
Symbol
Function
7
ClkQ180Deg
If the Q-clock is phase shifted more than 180° compared to the I-clock, the bit
ClkQ180Deg
is set to 1, otherwise it is 0.
6
ClkQCalib
If this bit is 0, the Q-clock is calibrated automatically after the Reset Phase and
after data reception from the card.
If this bit is set to 1, no calibration is performed automatically.
5
0
This value shall not be changed
4-0
ClkQDelay
This register shows the number of delay elements actually used to generate a
90°phase shift of the I-clock to obtain the Q-clock.
It can be written directly by the μ-Processor or by the automatic calibration cycle.
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