Data Sheet

FSC-BT826HC
10
5.2 I
2
C Interface
◆ Up to two I
2
C bus interfaces can support both master and slave mode with a frequency up
to 400KHZ.
◆ Provide arbitration function, optional PEC(packet error checking) generation and checking.
◆ Supports 7 –bit and 10 –bit addressing mode and general call addressing mode.
The I
2
C interface is an internal circuit allowing communication with an external I
2
C interface
which is an industry standard two line serial interface used for connection to external hardware.
These two serial lines are known as a serial data line (SDA) and a serial clock line (SCL). The
I
2
C module provides two data transfer rates: 100 kHz of standard mode or 400kHz of the fast
mode. The I
2
C module also has an arbitration detect function to prevent the situation where
more than one master attempts to transmit data to the I
2
C bus at the same time. A CRC-8
calculator is also provided in I
2
C interface to perform packet error checking for I
2
C data.
5.3 Analog to digital converter (ADC)
◆ 12-bit SAR ADC engine with up to 1 MSPS conversion rate
◆ Conversion range: VSSA to VDDA
◆ Temperature sensor
One 12-bit 1 μs multi-channel ADC is integrated in the device.
An analog watchdog block can be used to detect the channels, which are required to remain
within a specific threshold window. A configurable channel management block of analog inputs
also can be used to perform conversions in single, continuous, scan or discontinuous mode to
support more advanced usages. The ADC can be triggered from the events generated by the
general-purpose timers (TMx) and the advanced-control timers (TM1) with internal connection.
The temperature sensor can be used to generate a voltage that varies linearly with
temperature. Each device is factory-calibrated to improve the accuracy and the calibration
data are stored in the system memory area.
5.4 PCM Interface Characteristics
The FSC-BT826HC supports a PCM digital audio interface that is used for transmitting
digital audio/voice data to/from the Audio Codec. Features are supported as below
◆ Supports Master and Slave mode
◆ Programmable long/short Frame Sync
◆ Supports 8-bit A-law/µ-law, and 13/16-bit linear PCM formats
◆ Supports sign-extension and zero-padding for 8-bit and 13-bit samples
◆ Supports padding of Audio Gain to 13-bit samples
◆ PCM Master Clock Output: 64, 128, 256, or 512kHz
◆ Supports SCO/ESCO link