TMS470R1B512 AD [Analog Devices], TMS470R1B512 Datasheet - Page 19

• Manufacturer Part Number: TMS470R1B512
• Description: 16/32-Bit RISC Flash Microcontroller
• Manufacturer: AD [Analog Devices]

MibADC
The multi-buffered analog-to-digital converter (MibADC) accepts an analog signal and converts the signal to a
10-bit digital value.
The B512 MibADC module can function in two modes: compatibility mode, where its programmer's model is
compatible with the TMS470R1x ADC module and its digital results are stored in digital result registers; or in
buffered mode, where the digital result registers are replaced with three FIFO buffers, one for each conversion
group [event, group1 (G1), and group2 (G2)]. In buffered mode, the MibADC buffers can be serviced by
interrupts or by the DMA.
MibADC Event Trigger Enhancements
The MibADC includes two major enhancements over the event-triggering capability of the TMS470R1x ADC.
For group 1, these event-triggered selections are configured via the group 1 source select bits (G1SRC[1:0]) in
the AD event source register (ADEVTSRC[5:4]). For the event group, these event-triggered selections are
configured via the event group source select bits (EVSRC[1:0]) in the AD event source register
(ADEVTSRC[1:0]).
For more detailed functional information on the MibADC, see the TMS470R1x Multi-Buffered Analog-to-Digital
Converter (MibADC) Reference Guide (literature number SPNU206).
www.ti.com
Both group1 and the event group can be configured for event-triggered operation, providing up to two
event-triggered groups.
The trigger source and polarity can be selected individually for both group 1 and the event group from the
three options identified in
EVENT NO.
EVENT1
EVENT2
EVENT3
EVENT4
Table
Table 8. MibADC Event Hookup Configuration
8.
SOURCE SELECT BITS FOR G1 OR EVENT
(G1SRC[1:0] OR EVSRC[1:0])
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00
01
10
11
16/32-Bit RISC Flash Microcontroller
SPNS107A – SEPTEMBER 2005 – REVISED AUGUST 2006
SIGNAL PIN NAME
RESERVED
ADEVT
HET18
HET19
TMS470R1B512
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