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LM4935 Scheda tecnica(PDF) 6 Page - Texas Instruments |
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LM4935 Scheda tecnica(HTML) 6 Page - Texas Instruments |
6 / 90 page LM4935, LM4935RLEVAL SNAS296E – OCTOBER 2005 – REVISED MAY 2013 www.ti.com Table 2-1. PIN DESCRIPTIONS Pin Pin Name Type Direction Description A1 EP_NEG Analog Output Earpiece negative output A2 A_VDD Supply Input Headphone and mixer VDD A3 INT_MIC_POS Analog Input Internal microphone positive input A4 EXT_MIC Analog Input External microphone input A5 VSAR2 Analog Input Input to SAR channel 2 A6 VSAR1 Analog Input Input to SAR channel 1 A7 PLL_VSS Supply Input PLL VSS B1 A_VSS Supply Input Headphone and mixer VSS B2 EP_POS Analog Output Earpiece positive output B3 INT_MIC_NEG Analog Input Internal microphone negative input B4 BYPASS Analog Inout A_VDD/2 filter point B5 TEST_MODE/CS Digital Input If SPI_MODE = 1, then this pin becomes CS. If SPI_MODE = 0, and TEST_MODE/CS = 1, then this places the LM4935 into test mode. B6 PLL_FILT Analog Inout Filter point for PLL VCO input B7 PLL_VDD Supply Input PLL VDD C1 HP_R Analog Output Headphone Right Output C2 EXT_BIAS Analog Output External microphone supply (2.0/2.5/2.8/3.3V) C3 INT_BIAS Analog Output 2.0V/2.5V ultra-clean supply for internal microphone C4 AUX_R Analog Input Right Analog Input C5 GPIO_2 Digital Inout General Purpose I/O 2 C6 SDA Digital Inout Control Data, I2C_SDA or SPI_SDI C7 SCL Digital Input Control Clock, I2C_SCL or SPI_SCK D1 HP_L Analog Output Headphone Left Output D2 VREF_FLT Analog Inout Filter point for the microphone power supply D3 AUX_L Analog Input Left Analog Input D4 SPI_MODE Digital Input Control mode select 1 = SPI, 0 = I2C (or test) D5 GPIO_1 Digital Inout General Purpose I/O 1 D6 BB_VDD Supply Input Baseband VDD for the digital I/Os D7 D_VDD Supply Input Digital VDD E1 HP_VMID Analog Inout Virtual Ground for Headphones in OCL mode, otherwise 1st headset detection input E2 HP_VMID_FB Analog Inout VMID Feedback in OCL mode, otherwise a 2nd headset detection input E3 MIC_DET Analog Input Headset insertion/removal and Microphone presence detection input E4 CPI_NEG Analog Input Cell Phone analog input negative E5 IRQ Digital Output Interrupt request signal (NOT open drain) E6 I2S_SDO Digital Output I2S Serial Data Out E7 I2S_SDI Digital Input I2S Serial Data Input F1 LS_VDD Supply Input Loudspeaker VDD F2 LS_VDD Supply Input Loudspeaker VDD F3 CPI_POS Analog Input Cell Phone analog input positive F4 CPO_NEG Analog Output Cell Phone analog output negative F5 AUX_OUT_NEG Analog Output Auxiliary analog output negative F6 I2S_WS Digital Inout I2S Word Select Signal (can be master or slave) F7 I2S_CLK Digital Inout I2S Clock Signal (can be master or slave) G1 LS_POS Analog Output Loudspeaker positive output G2 LS_VSS Supply Input Loudspeaker VSS G3 LS_NEG Analog Output Loudspeaker negative output 6 Device Information Copyright © 2005–2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: LM4935 LM4935RLEVAL |
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