SI270X-A-EVB Silicon Laboratories Inc, SI270X-A-EVB Datasheet - Page 21

• Manufacturer Part Number: SI270X-A-EVB
• Description: BOARD EVAL FOR SI270X-A
• Manufacturer: Silicon Laboratories Inc

Specifications of SI270X-A-EVB

• Board Type: Fully Populated
• Amplifier Type: Class D
• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 5W x 2 @ 3 Ohm
• Voltage - Supply: 9V
• Utilized Ic / Part: SI270X-A
• Description/function: Audio Amplifiers
• Output Power: 5 W
• Product: Audio Modules
• For Use With/related Products: Si270x
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1929

Standby Mode so that the high power outputs are prevented from being enabled prior to the registers being
configured. Any other command sent to the device is acknowledged on the bus but ignored by the device. This
mode has the highest wake-up time and lowest power consumption of the three low power modes.
A POWER_DOWN command causes a transition to Power Down Mode, disabling the outputs and resetting all
parameter registers to default values.
4.3. Chip Configuration
The Si270x can be programmed via the 2-Wire interface for several operating configurations.
4.3.1. Multi-Function Pins (MFPs)
Three multi-function pins (MFPs) support a wide range of system configurations while minimizing pin count. These
MFPs are programmed via the 2-Wire interface. Table 13 outlines all available signals, and Table 14 shows the
signal configuration options available on each MFP with the default in bold.
The MFPs default to High-Z state. MFP1 can be programmed to be signal INT or GPO1. MFP2 can be
programmed to be signal OUTSEL, DIN2, DOUT2 or GPO2. MFP3 can be programmed to be signal DIN3, DOUT
or GPO3. Table 14 summarizes the MFP configuration options with the default functionality shown in bold.
The Si270x can receive digital I
being only one input. For cases where more than one signal input is desired or alternatively a signal output is
desired, the MFPs should be programmed to an appropriate configuration with additional DINx/DOUT signals.
Three general purpose output (GPO) pins are also available. The GPOs can be programmed to output logic 1,
logic 0, or a Hi-Z state. These pins can be used for example to control multiplexer switches in the application via
the 2-Wire bus.
MFP pin function is established using the MFP_PIN_CFG command. Refer to the “AN469: Si270x Programming
Guide” for more information on the options and settings requested for operation of the multi function pins.
Pin Name
MFP1
MFP2
MFP3
Table 13. Multi-Function Signal Definitions
2
S audio signal from up to three different sources with the default configuration
Table 14. MFP Configuration Options
Signal Name
OUTSEL
GPO1–3
#13 (eTQFP)
#14 (eTQFP)
#10 (eTQFP)
Pin Number
DOUT
#10 (QFN)
#11 (QFN)
DIN2
DIN3
#7 (QFN)
INT
Tri-level output mode select
Functional Description
Rev. 0.6
General purpose output
High-Z, OUTSEL, DIN2, DOUT, GPO2
I
I
I
2
2
2
Interrupt flag
S data input 2
S data input 3
High-Z, DIN3, DOUT, GPO3
S data output
High-Z, INT, GPO1
Signal Options
Si2704/05/06/07-A10
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