Datasheet

Table Of Contents
RM46L852
SPNS185C SEPTEMBER 2012 REVISED JUNE 2015
www.ti.com
7.4.1 Features
12-bit resolution
AD
REFHI
and AD
REFLO
pins (high and low reference voltages)
Total Sample/Hold/Convert time: 600ns Minimum at 30MHz ADCLK
One memory region per conversion group is available (event, group 1, group 2)
Allocation of channels to conversion groups is completely programmable
Supports flexible channel conversion order
Memory regions are serviced either by interrupt or by DMA
Programmable interrupt threshold counter is available for each group
Programmable magnitude threshold interrupt for each group for any one channel
Option to read either 8-bit, 10-bit or 12-bit values from memory regions
Single or continuous conversion modes
Embedded self-test
Embedded calibration logic
Enhanced power-down mode
Optional feature to automatically power down ADC core when no conversion is in progress
External event pin (ADxEVT) programmable as general-purpose I/O
7.4.2 Event Trigger Options
The ADC module supports 3 conversion groups: Event Group, Group1 and Group2. Each of these 3
groups can be configured to be hardware event-triggered. In that case, the application can select from
among 8 event sources to be the trigger for a group's conversions.
7.4.2.1 MIBADC1 Event Trigger Hookup
Table 7-16. MIBADC1 Event Trigger Hookup
Trigger Event Signal
Group Source
Select, G1SRC, PINMMR30[0] = 0 and PINMMR30[1] = 1
Event #
PINMMR30[0] = 1
G2SRC or
Control for Control for
(default)
Option A Option B
EVSRC
Option A Option B
000 1 AD1EVT AD1EVT AD1EVT
PINMMR30[8] = 0
001 2 N2HET1[8] N2HET2[5] PINMMR30[8] = 1 ePWM_B and
PINMMR30[9] = 1
010 3 N2HET1[10] N2HET1[27] N2HET1[27]
PINMMR30[16] =
RTI Compare 0 RTI Compare 0 PINMMR30[16] = 0 and
011 4 ePWM_A1
Interrupt Interrupt 1 PINMMR30[17] =
1
100 5 N2HET1[12] N2HET1[17] N2HET1[17]
PINMMR30[24] =
PINMMR30[24] = 0 and
101 6 N2HET1[14] N2HET1[19] N2HET2[1]
1 PINMMR30[25] =
1
PINMMR31[0] = 0
110 7 GIOB[0] N2HET1[11] PINMMR31[0] = 1 ePWM_A2 and
PINMMR31[1] = 1
PINMMR31[8] = 0
PINMMR32[16] =
111 8 GIOB[1] N2HET2[13] ePWM_AB and
1
PINMMR31[9] = 1
134 Peripheral Information and Electrical Specifications Copyright © 2012–2015, Texas Instruments Incorporated
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