TC1796 Datasheet, PDF (65/134 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller TriCore

TC1796
Functional Description
3.16
Fast Analog-to-Digital Converter Unit (FADC)
The FADC module of the TC1796 basically is a 4-channel A/D converter with 10-bit
resolution that operates by the method of the successive approximation.
The main FADC functional blocks shown in Figure 16 are:
• The Input Stage contains the differential inputs and the programmable amplifier.
• The A/D Converter is responsible for the analog-to-digital conversion.
• The Data Reduction Unit contains programmable anti aliasing and data reduction
filters.
• The Channel Trigger Control block defines the trigger and gating conditions for the
four FADC channels. The gating source inputs GS[7:0] and trigger source inputs
TS[7:0] are connected with GPTA0 module outputs, with GPIO port lines, and
external request unit outputs.
• The Channel Timers can independently trigger the conversion of each FADC
channel.
• The A/D control block is responsible for the overall FADC functionality.
The FADC module is supplied by the following power supply and reference voltage lines:
• V_DDMF/V_DDMF: FADC Analog Part Power Supply (3.3V)
• V_DDAF/V_DDAF: FADC Analog Part Logic Power Supply (1.5V)
• V_FAREF/V_FAGND: FADC Reference Voltage/FADC Reference Ground
Data Sheet
65
V1.0, 2008-04