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ST25R3916 数据表(PDF) 99 Page - STMicroelectronics |
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ST25R3916 数据表(HTML) 99 Page - STMicroelectronics |
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99 / 157 page  DS12484 Rev 4 99/157 ST25R3916/7 Application information 156 4.5.35 Timer and NFC interrupt register Register space: A Address: 1Bh Type: R Table 63. Timer and NFC interrupt register(1) Bit Name Default Function Comments 7 I_dct - IRQ due to termination of direct command - 6 I_nre - IRQ due to No-response timer expire - 5 I_gpe - IRQ due to general purpose timer expire - 4 I_eon - IRQ due to detection of external field higher than Target activation level - 3 I_eof - IRQ due to detection of external field drop below Target activation level - 2I_cac - IRQ due to detection of collision during RF Collision Avoidance - 1 I_cat - IRQ after minimum guard time expire An external field was not detected during RF collision avoidance, field was switched on, IRQ sent after minimum guard time according to NFCIP-1. 0I_nfct - IRQ when in target mode the initiator bit rate was recognized - 1. After register has been read, its content is set to 0. |
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