ATMEGA128-16AU SL383 Atmel, ATMEGA128-16AU SL383 Datasheet - Page 266

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

ATmega128
Boundary-scan
Order
266
ATmega128
Table 106
selected as data path. Bit 0 is the LSB; the first bit scanned in, and the first bit scanned out. The
scan order follows the pin-out order as far as possible. Therefore, the bits of Port A is scanned in
the opposite bit order of the other ports. Exceptions from the rules are the Scan chains for the
analog circuits, which constitute the most significant bits of the scan chain regardless of which
physical pin they are connected to. In
corresponds to FF1, and PXn. Pullup_enable corresponds to FF2. Bit 2, 3, 4, and 5 of Port C is
not in the scan chain, since these pins constitute the TAP pins when the JTAG is enabled.
Table 106. ATmega128 Boundary-scan Order
Bit Number
204
203
202
201
200
199
198
197
196
195
194
193
192
191
190
189
188
187
186
185
184
183
182
181
180
179
178
177
176
shows the Scan order between TDI and TDO when the Boundary-scan Chain is
Signal Name
AC_IDLE
ACO
ACME
AINBG
COMP
PRIVATE_SIGNAL1
ACLK
ACTEN
PRIVATE_SIGNAL1
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
GNDEN
HOLD
IREFEN
MUXEN_7
(1)
(2)
Figure
Module
Comparator
ADC
124, PXn. Data corresponds to FF0, PXn. Control
2467S–AVR–07/09