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OM25180FDKM Datasheet(PDF) 88 Page - NXP Semiconductors |
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OM25180FDKM Datasheet(HTML) 88 Page - NXP Semiconductors |
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88 / 149 page  PN5180 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved. Product data sheet COMPANY PUBLIC Rev. 3.0 — 7 October 2016 240930 88 of 149 NXP Semiconductors PN5180 High-performance multi-protocol full NFC Forum-compliant frontend 3:5 T0_PRESCALE_SEL R/W 000b* Controls frequency/period of the timer T0 when the prescaler is activated in T0_MODE_SEL: 000b 6.78 MHz counter 001b 3.39 MHz counter 010b 1.70 MHz counter 011b 848 kHz counter 100b 424 kHz counter 101b 212 kHz counter 110b 106 kHz counter 111b 53 kHz counter 2 T0_MODE_SEL R/W 0* Configuration of the timer T0 clock. 0b* Prescaler is disabled: the timer frequency matches CLIF clock frequency (13.56 MHz). 1b Prescaler is enabled: the timer operates on the prescaler signal frequency (chosen by T0_PRESCALE_SEL). 1 T0_RELOAD_ENABLE R/W 0* If set to 0; the timer T0 stops on expiration. 0* After expiration the timer T0 stops counting; i.e.; remain zero; reset value. 1 After expiration the timer T0 reloads its preset value and continues counting down. 0 T0_ENABLE R/W 0* Enables the timer T0 Table 78. TIMER0_CONFIG register (address 000Eh) bit description …continued Bit Symbol Access Value Description Table 79. TIMER1_CONFIG register (address 000Fh) bit description Bit Symbol Access Value Description 20 T1_STOP_ON_RX_STARTED R/W 0* T1_STOP_EVENT: If set; the timer T1 is stopped when a data reception begins and the first 4 bits had been received. The additional delay of the timer is protocol-dependent and listed in the appendix. 19 T1_STOP_ON_TX_STARTED R/W 0* T1_STOP_EVENT: If set; the timer T1 is stopped when a data transmission begins. 18 T1_STOP_ON_RF_ON_EXT R/W 0* T1_STOP_EVENT: If set; the timer T1 is stopped when the external RF field is detected. 17 T1_STOP_ON_RF_OFF_EXT R/W 0* T1_STOP_EVENT: If set; the timer T1 is stopped when the external RF field vanishes. 16 T1_STOP_ON_RF_ON_INT R/W 0* T1_STOP_EVENT: If set; the timer T1 is stopped when the internal RF field is turned on. 15 T1_STOP_ON_RF_OFF_INT R/W 0* T1_STOP_EVENT: If set; the timer T1 is stopped when the internal RF field is turned off. 14 T1_START_ON_RX_STARTED R/W 0* T1_START_EVENT: If set; the timer T1 is started when a data reception begins (first bit is received). 13 T1_START_ON_RX_ENDED R/W 0* T1_START_EVENT: If set; the timer T1 is started when a data reception ends. 12 T1_START_ON_TX_STARTED R/W 0* T1_START_EVENT: If set; the timer T1 is started when a data transmission begins. 11 T1_START_ON_TX_ENDED R/W 0* T1_START_EVENT: If set; the timer T1 is started when a data transmission ends. 10 T1_START_ON_RF_ON_EXT R/W 0* T1_START_EVENT: If set; the timer T1 is started when the external RF field is detected. |
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