dspic33fj128gp706at-i-pt Microchip Technology Inc., dspic33fj128gp706at-i-pt Datasheet - Page 237

• Manufacturer Part Number: dspic33fj128gp706at-i-pt
• Description: High-performance, 16-bit Digital Signal Controllers
• Manufacturer: Microchip Technology Inc.

REGISTER 21-1:
© 2009 Microchip Technology Inc.
bit 3
bit 2
bit 1
bit 0
SIMSAM: Simultaneous Sample Select bit (only applicable when CHPS<1:0> = 01 or 1x)
When AD12B = 1, SIMSAM is: U-0, Unimplemented, Read as ‘0’
1 = Samples CH0, CH1, CH2, CH3 simultaneously (when CHPS<1:0> = 1x); or
0 = Samples multiple channels individually in sequence
ASAM: ADC Sample Auto-Start bit
1 = Sampling begins immediately after last conversion. SAMP bit is auto-set
0 = Sampling begins when SAMP bit is set
SAMP: ADC Sample Enable bit
1 = ADC sample/hold amplifiers are sampling
0 = ADC sample/hold amplifiers are holding
If ASAM = 0, software may write ‘1’ to begin sampling. Automatically set by hardware if ASAM = 1.
If SSRC = 000, software may write ‘0’ to end sampling and start conversion. If SSRC
automatically cleared by hardware to end sampling and start conversion.
DONE: ADC Conversion Status bit
1 = ADC conversion cycle is completed
0 = ADC conversion not started or in progress
Automatically set by hardware when ADC conversion is complete. Software may write ‘0’ to clear
DONE status (software not allowed to write ‘1’). Clearing this bit will NOT affect any operation in prog-
ress. Automatically cleared by hardware at start of a new conversion.
Samples CH0 and CH1 simultaneously (when CHPS<1:0> = 01)
ADxCON1: ADCx CONTROL REGISTER 1(where x = 1 or 2) (CONTINUED)
dsPIC33FJXXXGPX06A/X08A/X10A
Preliminary
DS70593A-page 235
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