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OM25180FDKM Datasheet(PDF) 79 Page - NXP Semiconductors |
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OM25180FDKM Datasheet(HTML) 79 Page - NXP Semiconductors |
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79 / 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 79 of 149 NXP Semiconductors PN5180 High-performance multi-protocol full NFC Forum-compliant frontend 0x38 up to firmware version 3.5: LPCD_REFVAL_CONTROL - - LPCD Reference Value Selection and GPO control 2 Control of GPO1 in relation to RF-ON 1 Enable Control (e.g. for external TVDD LDO) via GPO1 0 Disable Control (e.g. for external TVDD LDO) via GPO1 1:0 Source of AGC reference value 11 RFU 10 Use AGC Reference value and AGC gear from the register AGC_REG_CONFIG. 01 Use one AGC measurement to get reference value 00 Use EEPROM value for reference value from firmware version 3.6 onwards LPCD_REFVAL_GPO_CONTROL - - This byte in EEPROM is used to control the GPO assertion during wake-up and LPCD card detect. 1:0 - Defines the source of the LPCD reference value 00 Use EEPROM Value for reference value 01 Use one AGC measurement to get reference value 10 Use AGC Reference value and AGC gear from the register AGC_REG_CONFIG. 11 RFU 2 - Allows enabling a GPO output level change during wake-up from standby, before the RF field is switched on. This allows waking-up an external LDO or DC/DC supplying the transmitter (pin TVDD). 0 Disable Control for external TVDD LDO via GPO1 1 Enable Control for external TVDD LDO via GPO1 3 - GPO2 Control for external TVDD LDO during wake-up from standby 0 Disable Control of external TVDD LDO via GPO2 on LPCD Card Detect 1 Enable Control of external TVDD LDO via GPO2 on LPCD Card Detect 4 - GPO1 Control for external TVDD LDO during wake-up from standby 0 Disable Control of external TVDD LDO via GPO1 on wake-up from standby 1 Enable Control of external TVDD LDO via GPO1 on wake-up from standby 0x39 LPCD_GPO_TOGGLE_BEFORE_ FIELD_ON - - 1 byte: This value defines the time between setting GPO1 until field is switched on. The byte defines the time multiplied by 5 in microseconds. 0x3A LPCD_GPO_TOGGLE_AFTER_ FIELD_ON - - 1 byte: This value defines the time between field off and clearing GPO1. The byte defines the time multiplied by 5 in microseconds. Table 63. Low-Power Card Detection: EEPROM configuration EEPROM address Name Bit value Description |
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