Texas Instruments TMS320F2837 D Series - Page 130

Analog-to-Digital Converter (ADC)
6 - 16 TMS320F2837xD Microcontroller Workshop - Analog Subsystem
ADC SOC0 – SOC15 Control Registers
AdczRegs.ADCSOCxCTL (z = a, b, c, or d)
TRIGSEL reserved
24 - 20 19 18 - 15
8 - 0
ACQPS
SOCx Trigger
Source Select
SOCx Channel
Select
SOCx Acquisition
Prescale
(S/H window)
0h = ADCIN0 0/1h = ADCIN0&1
1h = ADCIN1 2/3h = ADCIN2&3
2h = ADCIN2 4/5h = ADCIN4&5
3h = ADCIN3 6/7h = ADCIN6&7
4h = ADCIN4 8/9h = ADCIN8&9
5h = ADCIN5 A/Bh = ADCIN10&11
6h = ADCIN6 C/Dh = ADCIN12&13
7h = ADCIN7 E/Fh = ADCIN14&15
8h = ADCIN8
(non-inverting/inverting)
9h = ADCIN9
Ah = ADCIN10
Bh = ADCIN11
Ch = ADCIN12
Dh = ADCIN13
Eh = ADCIN14
Fh = ADCIN15
Single-Ended
(SIGNALMODE=0)
Differential
(SIGNALMODE=1)
000h = 1 SYSCLK
cycles wide
001h = 2 SYSCLK
cycles wide
002h = 3 SYSCLK
cycles wide
1FFh = 512 SYSCLK
cycles wide
Sampling Window
CHSEL reserved
reserved
14 - 931 - 25
00h = software
01h = CPU1 Timer 0
02h = CPU1 Timer 1
03h = CPU1 Timer 2
04h = ADCEXTSOC
05h = ePWM1SOCA/C
06h = ePWM1SOCB/D
07h = ePWM2SOCA/C
08h = ePWM2SOCB/D
09h = ePWM3SOCA/C
0Ah = ePWM3SOCB/D
0Bh = ePWM4SOCA/C
0Ch = ePWM4SOCB/D
0Dh = ePWM5SOCA/C
0Eh = ePWM5SOCB/D
0Fh = ePWM6SOCA/C
10h = ePWM6SOCB/D
11h = ePWM7SOCA/C
12h = ePWM7SOCB/D
13h = ePWM8SOCA/C
14h = ePWM8SOCB/D
15h = ePWM9SOCA/C
16h = ePWM9SOCB/D
17h = ePWM10SOCA/C
18h = ePWM10SOCB/D
19h = ePWM11SOCA/C
1Ah = ePWM11SOCB/D
1Bh = ePWM12SOCA/C
1Ch = ePWM12SOCB/D
1Dh = CPU2 Timer 0
1Eh = CPU2 Timer 1
1Fh = CPU2 Timer 2
ADC Interrupt Trigger SOC Select
Registers 1 & 2
AdczRegs.ADCINTSOCSELx (z = a, b, c, or d)
15 - 14
SOC15 SOC14 SOC13 SOC12 SOC11 SOC10 SOC9 SOC8
13 - 12 11 - 10 9 - 8 7 - 6 5 - 4 3 - 2 1 - 0
15 - 14
SOC7 SOC6 SOC5 SOC4 SOC3 SOC2 SOC1 SOC0
13 - 12 11 - 10 9 - 8 7 - 6 5 - 4 3 - 2 1 - 0
ADCINTSOCSEL2
ADCINTSOCSEL1
SOCx ADC Interrupt Select
Selects which, if any, ADCINT triggers SOCx
00 = no ADCINT will trigger SOCx (TRIGSEL field determines SOCx trigger)
01 = ADCINT1 will trigger SOCx (TRIGSEL field ignored)
10 = ADCINT2 will trigger SOCx (TRIGSEL field ignored)
11 = invalid selection