LM4934RLX/NOPB National Semiconductor, LM4934RLX/NOPB Datasheet - Page 35

• Manufacturer Part Number: LM4934RLX/NOPB
• Description: IC AUDIO SUBSYSTEM 1.2W 42USMDXT
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4934RLX/NOPB

• Output Type: 2-Channel (Stereo) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1.2W x 2 @ 8 Ohm; 80mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: 3D, Depop, I²C, I²S, Mute, Shutdown, SPI, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 42-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4934RLX

Application Information
S12 – connects VDD_I2C to Analog VDD
S17 – connects BB_VDD to USB3.3V (from USB board)
S19 – connects VDD_D to USB3.3V (from USB board)
S20 – connects VDD_D to SPDIF receiver chip
ANALOG SUPPLY
JP11 — Analog Supply
INPUTS
Analog Inputs
JP2 — Mono Input
JP6 — Left Input
JP7 — Right Input
Digital Inputs
JP19 — Digital Interface
JP20 — Toslink SPDIF Input
JP21 — Coaxial SPDIF Input
Coaxial and Toslink inputs may be toggled between by use of S25. Only one may be used at a time. Must be used in conjunction
with on-board SPDIF receiver chip.
OUTPUTS
JP4 — Right BTL Loudspeaker Output
JP5 — Left BTL Loudspeaker Output
JP1 — Left Headphone Output (Single-Ended or OCL)
JP3 — Right Headphone Output (Single-Ended or OCL)
P1 — Stereo Headphone Jack (Same as JP1, JP2, Single-Ended or OCL)
JP12 — Mono BTL Earpiece Output
JP8 — Single-Ended Line Level Output
CONTROL INTERFACE
X1, X2 – USB Control Bus for I2C/SPI
X1
Pin 9 – Mode Select (SPI or I2C)
X2
Pin 1 – SDA
Pin 3 – SCL
Pin 15 – ADDR/END
Pin 14 – USB5V
Pin 16 – USB3.3V
Pin 16 – USB GND
S12 — connects Analog VDD with Digital VDD (I2C_VDD)
S16 — connects Analog Ground with Digital Ground
S21 — connects Analog VDD to SPDIF receiver chip
Pin 1 — MCLK
Pin 2 — I2S_CLK
Pin 3 — I2S_SDI
Pin 4 — I2S_WS
(Continued)
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