EVK-R2 - User GuideUBX-16016088 - R10 Starting up Page 11 of 27DIL B2B J201 DIL B2B J200Signal Name Pin N° Pin N° Signal Name Signal Name Pin N° Pin N° Signal NameHOST_SELECT0 2 1 GND Not connected 2 1 GNDNot connected 4 3 V_BCKP Not connected 4 3 Not connectedNot connected 6 5 Not connected Not connected 6 5 Not connectedGND 8 7 GND VCC 8 7 VCCGND 10 9 GND VCC 10 9 VCCDTR 12 11 DCD Not connected 12 11 Not connectedCTS 14 13 RTS SIM_IO 14 13 VSIMRXD 16 15 TXD SIM_RST 16 15 SIM_CLKDSR 18 17 RI Not connected 18 17 Not connectedNot connected 20 19 Not connected SCL 20 19 Not connectedNot connected 22 21 Not connected Not connected 22 21 SDANot connected 24 23 GPIO5 Not connected 24 23 Not connectedNot connected 26 25 GPIO4 RESET_N 26 25 Not connectedNot connected 28 27 Not connected MIC_BIAS 28 27 MIC_GNDNot connected 30 29 PWR_ON Not connected 30 29 Not connectedGPIO3 32 31 GPIO2 Not connected 32 31 Not connectedHOST_SELECT1 34 33 GPIO1 SPK_N 34 33 SPK_PV_INT 36 35 Not connected Not connected 36 35 Not connectedNot connected 38 37 Not connected Not connected 38 37 Not connectedNot connected 40 39 Not connected Not connected 40 39 Not connectedGND 42 41 GND GND 42 41 Not connectedTable 5: Pin-out of the 42-pin Dual-In-Line Board-to-Board connectors (J201, J200) available on the adapter board ADP-R2of the EVK-R2 evaluation kit for TOBY-R2 series modules☞ The pins / interfaces that are not supported by a specific TOBY-R2 module product version shouldbe not driven by an external device (see the TOBY-R2 series Data Sheet [3] and the TOBY-R2 seriesSystem Integration Manual [5] for the features supported by each TOBY-R2 module productversion).