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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CLRC663 датащи(PDF) 97 Page - NXP Semiconductors |
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CLRC663 датащи(HTML) 97 Page - NXP Semiconductors |
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97 / 177 page  NXP Semiconductors CLRC663 High performance multi-protocol NFC frontend CLRC663 and CLRC663 plus 9.14 Low-power card detection configuration registers The LPCD registers contain the settings for the low-power card detection. The setting for LPCD_IMax (6 bits) is done by the two highest bits (bit 7, bit 6) of the registers LPCD_QMin, LPCD_QMax and LPCD_IMin each. 9.14.1 LPCD_QMin Bit 7 6 5 4 3 2 1 0 Symbol LPCD_IMax.5 LPCD_IMax.4 LPCD_QMin Access rights r/w r/w r/w Table 181. LPCD_QMin register (address 3Fh) Bit Symbol Description 7, 6 LPCD_IMax Defines the highest two bits of the higher border for the LPCD. If the measurement value of the I channel is higher than LPCD_IMax, an LPCD interrupt request is indicated by bit IRQ0.LPCDIRQ. 5 to 0 LPCD_QMin Defines the lower border for the LPCD. If the measurement value of the Q channel is higher than LPCD_QMin, an LPCDinterrupt request is indicated by bit IRQ0.LPCDIRQ. Table 182. LPCD_QMin bits 9.14.2 LPCD_QMax Bit 7 6 5 4 3 2 1 0 Symbol LPCD_IMax.3 LPCD_IMax.2 LPCD_QMax Access rights r/w r/w r/w Table 183. LPCD_QMax register (address 40h) Bit Symbol Description 7 LPCD_IMax.3 Defines the bit 3 of the high border for the LPCD. If the measurement value of the I channel is higher than LPCD IMax, an LPCD IRQ is raised. 6 LPCD_IMax.2 Defines the bit 2 of the high border for the LPCD. If the measurement value of the I channel is higher than LPCD IMax, an LPCD IRQ is raised. 5 to 0 LPCD_QMax Defines the high border for the LPCD. If the measurement value of the Q channel is higher than LPCD QMax, an LPCD IRQ is raised. Table 184. LPCD_QMax bits 9.14.3 LPCD_IMin Bit 7 6 5 4 3 2 1 0 Symbol LPCD_IMax.1 LPCD_IMax.0 LPCD_IMin Access rights r/w r/w r/w Table 185. LPCD_IMin register (address 41h) CLRC663 All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved. Product data sheet Rev. 5.3 — 3 January 2024 97 / 177 |
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