ATMEGA128-16AU SL383 Atmel, ATMEGA128-16AU SL383 Datasheet - Page 262

• Manufacturer Part Number: ATMEGA128-16AU SL383
• Manufacturer: Atmel

262
ATmega128
Table 104. Boundary-scan Signals for the ADC
Signal
Name
COMP
ACLK
ACTEN
ADCBGEN
ADCEN
AMPEN
DAC_9
DAC_8
DAC_7
DAC_6
DAC_5
DAC_4
DAC_3
DAC_2
DAC_1
DAC_0
EXTCH
G10
G20
Direction
as Seen
from the
ADC
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Description
Comparator Output
Clock signal to gain
stages implemented
as Switch-cap filters
Enable path from gain
stages to the
comparator
Enable Band-gap
reference as negative
input to comparator
Power-on signal to the
ADC
Power-on signal to the
gain stages
Bit 9 of digital value to
DAC
Bit 8 of digital value to
DAC
Bit 7 of digital value to
DAC
Bit 6 of digital value to
DAC
Bit 5 of digital value to
DAC
Bit 4 of digital value to
DAC
Bit 3 of digital value to
DAC
Bit 2 of digital value to
DAC
Bit 1 of digital value to
DAC
Bit 0 of digital value to
DAC
Connect ADC
channels 0 - 3 to by-
pass path around gain
stages
Enable 10x gain
Enable 20x gain
Recommen-
ded Input
when not
in Use
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
Output Values when
Recommended Inputs
are Used, and CPU is
not Using the ADC
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
2467S–AVR–07/09