The device has many supported features
and flexible options that can be used in the system to seamlessly connect multiple
TAC5112-Q1 devices by sharing a single common
I2C or SPI control bus and an audio serial interface bus. This
architecture enables multiple applications to be applied to a system that require a
microphone or speaker array for beam-forming operation, audio conferencing, noise
cancellation, and so forth. Figure 6-14
shows a diagram of multiple TAC5112-Q1 devices in a
configuration where the control and audio data buses are shared.
The TAC5112-Q1 consists of the following features to enable seamless
connection and interaction of multiple devices using a shared bus:
- Supports up to four
pin-programmable I2C target addresses
- I2C broadcast
simultaneously writes to (or triggers) all TAC5112-Q1
devices
- Supports up to 32
configuration input/output channel slots for the audio serial interface
- Tri-state feature (with
enable and disable) for the unused audio data slots of the device
- Supports a bus-holder feature
(with enable and disable) to keep the last driven value on the audio
bus
- The GPIOx, GPI1 or GPO1 pin
can be configured as a secondary input/output data lane or as a secondary
audio serial interface
- The GPIOx, GPI1 or GPO1 pin
can be used in a daisy-chain configuration of multiple TAC5112-Q1 devices
- Supports one BCLK cycle data
latching timing to relax the timing requirement for the high-speed
interface
- Programmable controller and
target options for both primary and secondary audio serial interface
- Ability to synchronize the
multiple devices for the simultaneous sampling requirement across
devices
- Inter Channel Gain Alignment
(ICGA) feature to align the DAC Channel gain across devices.
See the
Multiple TAC5x1x Devices With a Shared TDM and
I2C/SPI Bus application report for further
details.