參數(shù)資料
型號: MFRC53101T
廠商: NXP Semiconductors N.V.
元件分類: 通信及網(wǎng)絡
英文描述: ISO-IEC 14443 reader IC
封裝: MFRC53101T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 51, 2004,;MFRC53101T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<
文件頁數(shù): 21/116頁
文件大?。?/td> 862K
代理商: MFRC53101T
MFRC531_34
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.4 — 26 January 2010
056634
21 of 116
NXP Semiconductors
MFRC531
ISO/IEC 14443 reader IC
9.4.3
Configuration of pin IRQ
The logic level of the IRq flag bit is visible on pin IRQ. The signal on pin IRQ can also be
controlled using the following IRQPinConfig register bits.
bit IRQInv: the signal on pin IRQ is equal to the logic level of bit IRq when this bit is set
to logic 0. When set to logic 1, the signal on pin IRQ is inverted with respect to bit IRq.
bit IRQPushPull: when set to logic 1, pin IRQ has CMOS output characteristics. When
it is set to logic 0, it is an open-drain output which requires an external resistor to
achieve a HIGH-level at pin IRQ.
Remark:
During the reset phase (see
Section 9.7.2 on page 28
) bit IRQInv is set to
logic 1 and bit IRQPushPull is set to logic 0. This results in a high-impedance on pin IRQ.
9.4.4
Register overview interrupt request system
Table 21
shows the related interrupt request system flags in alphabetical order.
Table 21.
Flags
HiAlertIEn
HiAlertIRq
IdleIEn
IdleIRq
IRq
IRQInv
IRQPushPull
LoAlertIEn
LoAlertIRq
RxIEn
RxIRq
SetIEn
SetIRq
TimerIEn
TimerIRq
TxIEn
TxIRq
Associated Interrupt request system registers and flags
Register name
InterruptEn
InterruptRq
InterruptEn
InterruptRq
PrimaryStatus
IRQPinConfig
IRQPinConfig
InterruptEn
InterruptRq
InterruptEn
InterruptRq
InterruptEn
InterruptRq
InterruptEn
InterruptRq
InterruptEn
InterruptRq
Bit
1
1
2
2
3
1
0
0
0
3
3
7
7
5
5
4
4
Register address
06h
07h
06h
07h
03h
07h
07h
06h
07h
06h
07h
06h
07h
06h
07h
06h
07h
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