SGTL5000XNLA3 Freescale Semiconductor, SGTL5000XNLA3 Datasheet - Page 44

• Manufacturer Part Number: SGTL5000XNLA3
• Description: IC AUDIO CODEC STEREO 20-QFN
• Manufacturer: Freescale Semiconductor
• Type: Stereo Audior

Specifications of SGTL5000XNLA3

• Data Interface: I²C, Serial, SPI™
• Number Of Adcs / Dacs: 1 / 1
• Sigma Delta: No
• S/n Ratio, Adcs / Dacs (db) Typ: 90 / 100
• Voltage - Supply, Analog: 1.62 V ~ 3.6 V
• Voltage - Supply, Digital: 1.1 V ~ 2 V, 1.62 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-UFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SGTL5000
6. PROGRAMMING EXAMPLES
44
6.1.
Prototype for Reading and Writing a Register
This section provides programming examples that show how to configure the chip.
The registers can be written/read by using I2C communication protocol. The chip
also supports SPI communication protocol but only register write operation is sup-
ported.
The generic register read write prototype will be used throughout this section as
shown below. The I2C or SPI implementation will be specific to the I2C/SPI hard-
ware used in the system.
// This prototype writes a value to the entire register.
// bit-fields of the register will be written.
Write
// This prototype writes a value only to the bit-field specified.
// In the actual implemention, the other bit-fields should be
// masked to prevent them from being written.
// actual implementation should left-shift the BITFIELDVALUE
// by appropriate number to match the starting bit location of
// the BITFIELD.
Modify
// Example implementation
// Modify DAP_EN (bit 0) bit to value 1 to enable DAP block
Modify( DAP_CONTROL_REG, 0xFFFE, 1 << DAP_EN_STARTBIT );
// Example Implementation of Modify
void Modify( unsigned short usRegister,
{
}
unsigned short usData;
// 1) Read current value
ReadRegister( usRegister, &usData );
// 2) Clear out old bits
usData = usData & usClearMask;
// 3) set new bit values
usData = usData | usSetValue;
// 4) Write out new value created
WriteRegister( usRegister, usData );
REGISTER
REGISTER -> BITFIELD,
unsigned short usClearMask,
unsigned short usSetValue )
REGISTERVALUE
BITFIELDVALUE
//Bitfield Location
Also, the
SGTL5000 EA2 DS-0-3
All