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PCF2131 Datasheet(PDF) 18 Page - NXP Semiconductors |
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PCF2131 Datasheet(HTML) 18 Page - NXP Semiconductors |
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18 / 34 page  NXP Semiconductors UM12262 FRDM-IMX91 Board User Manual Pin number M.2 mini card connector pin Connection details 14 I2S_SD_OUT Connected to SAI1_TXD processor pin if R2792 is populated 16 LED2 Connected to M.2 Orange LED, D614 20 UART_WAKE M2_UART_nWAKE input for I/O expander (PCAL6524HEAZ, P0_3, I2C address: 0x22) if R2853 is populated 22 UART_RXD Connected to UART5_RXD if R2835 is populated 32 UART_TXD Connected to UART5_TXD if R2833 is populated 34 UART_CTS Connected to UART5_CTSI if R2839 is populated 36 UART_RTS Connected to UART5_RTSO if R2837 is populated 38 VEN_DEF1 Connected to SPI3_MOSI if R2790 is populated 40 VEN_DEF2 Connected to SPI3_MISO if R2795 is populated 42 VEN_DEF3 Connected to SPI3_CLK if R2793 is populated 50 SUSCLK Connected to PMIC_32K_OUT, generated by PCA9451AHNY PMIC 52 PERST0 M2_nRST input for I/O expander (PCAL6524HEAZ, P2_2, I2C address: 0x22) 54 W_DISABLE2 M2_nDIS2 input for I/O expander (PCAL6524HEAZ, P2_3, I2C address: 0x22) if R2867 is populated 56 W_DISABLE1 M2_nDIS1 input for I/O expander (PCAL6524HEAZ, P2_4, I2C address: 0x22) if R2866 is populated 58 I2C_DATA Connected to SDAL pin of PCA9451AHNY PMIC 60 I2C_CLK Connected to SCLL pin of PCA9451AHNY PMIC 62 ALERT M2_nALERT input for I/O expander (PCAL6524HEAZ, P1_2, I2C address: 0x22) if R2860 is populated 3 USB_D+ Connected to USB2_D_P processor pin if R2806 is populated 5 USB_D- Connected to USB2_D_N if R2807 is populated 9 SDIO_CLK Connected to the SD3_CLK processor pin and processor interface SDHC3 if R2824 is populated 11 SDIO_CMD Connected to the SD3_CMD processor pin and processor interface SDHC3 if R2825 is populated 13 SDIO_DATA0 Connected to the SD3_DATA0 processor pin and processor interface SDHC3 if R2826 is populated 15 SDIO_DATA1 Connected to the SD3_DATA1 processor pin and processor interface SDHC3 if R2827 is populated 17 SDIO_DATA2 Connected to the SD3_DATA2 processor pin and processor interface SDHC3 if R2828 is populated 19 SDIO_DATA3 Connected to the SD3_DATA3 processor pin and processor interface SDHC3 if R2829 is populated 21 SDIO_WAKE Connected to the CCM_CLKO1 processor pin of NVCC_WAKEUP module if R2851 is populated 23 SDIO_RST SD3_nRST output from I/O expander (PCAL6524HEAZ, P1_4, I2C address: 0x22) if R3037 is populated Table 16. M.2 mini card connector (P8) pinout...continued UM12262 All information provided in this document is subject to legal disclaimers. © 2025 NXP B.V. All rights reserved. User manual Rev. 3.0 — 22 April 2025 Document feedback 18 / 34 |
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