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OM25180FDKM Datasheet(PDF) 101 Page - NXP Semiconductors |
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OM25180FDKM Datasheet(HTML) 101 Page - NXP Semiconductors |
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101 / 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 101 of 149 NXP Semiconductors PN5180 High-performance multi-protocol full NFC Forum-compliant frontend Table 95. AGC_VALUE_REG register (address 001Fh) bit description Bit Symbol Access Value Description 20:31 RFU R 0 Reserved 10:19 AGC_RM_VALUE R/W 0 Static AGC value used for reader mode 0:9 AGC_CM_VALUE R/W 0 Static AGC value used for card mode Table 96. RF_CONTROL_TX register (address 0020h) bit description Bit Symbol Access Value Description 27:31 RFU R 0 Reserved 26 TX_ALM_TYPE_SELECT R/W 0* 0 ... Both drivers used for ALM 1 ... Single driver used for ALM 24:25 TX_CW_AMPLITUDE_ALM_CM R/W 0* set amplitude of unmodulated carrier at card mode 19:23 TX_RESIDUAL_CARRIER_OV_ PREV R/W 0* Defines the value for the residual carrier for the period the overshoot prevention pattern is active. 18 TX_CW_TO_MAX_ALM_CM R/W 0* TX HI output is the maximum voltage obtainable from charge pump (CM setting); if set to 1 -> TX_CW_AMPLITUDE_CM is overruled. 13:17 TX_RESIDUAL_CARRIER R/W 0* set residual carrier (0=100 %, 1F = 0 %) 12 TX_BYPASS_SC_SHAPING R/W 0* Bypasses switched capacitor TX shaping of the Transmitter Signal and disables the shaping control for the rising edge. So this bit must be 0, if the TAU_MOD_RISING settings shall apply. The rising edge provides the fastest rise time, if TX_SET_BYPASS_SC_SHAPING = 1 (TAU_MOD_RISING does not matter). 8:11 TX_SLEW_SHUNTREG R/W 0* Set slew rate for shunt regulator. Set slew rate for Tx Shaping shunt regulator (0= slowest slew rate, 0xF = fastest slew rate) for both the falling and rising edge. 4:7 TX_TAU_MOD_FALLING R/W 0* Transmitter TAU setting for falling edge of modulation shape. In AnalogControl module, the output signal is switched with the tx_envelope. Only valid is TX_SINGLE_CP_MODE is set 0:3 TX_TAU_MOD_RISING R/W 0* Transmitter TAU setting for rising edge of modulation shape. In Analog Control module, the output signal is switched with the tx_envelope. Only valid is TX_SINGLE_CP_MODE is set Table 97. RF_CONTROL_TX_CLK register (address 0021h) bit description Bit Symbol Access Value Description 19:31 RFU R 0* Reserved 18 TX_ALM_ENABLE R/W 0* If set to 1 ALM is used for transmission in card mode 14:17 RFU R RFU 11:13 CLOCK_CONFIG_DLL_ALM R/W 0* Configures the phase difference in integer multiples of 45° steps between the recovered and the transmitted RF clock 8:10 TX_CLK_MODE_OVUN_PREV R/W 0* Defines the TX clockmode for the period the overshoot/undershoot prevention is active |
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