Table 2-1.
Signal Name
Signal Description List (Continued)
Function
Reset/Test
Type
Active
Level
Comments
NRST
TST
Microcontroller Reset
Test Mode Select
I/O
Input
Low
Pull-up resistor
Pull-down resistor. Accepts
between 0V and VDDBU.
No pull-up resistor
BMS
Boot Mode Select
Input
Debug Unit - DBGU
BMS = 0 when tied to GND
BMS = 1 when tied to VDDIOP0
DRXD
DTXD
Debug Receive Data
Debug Transmit Data
Input
Output
Advanced Interrupt Controller - AIC
IRQ0–IRQ2
FIQ
External Interrupt Inputs
Fast Interrupt Input
Input
Input
PIO Controller - PIOA / PIOB / PIOC
PA0–PA31
PB0–PB31
PC0–PC31
Parallel IO Controller A
Parallel IO Controller B
Parallel IO Controller C
I/O
I/O
I/O
Pulled-up input at reset
Pulled-up input at reset
Pulled-up input at reset
External Bus Interface - EBI
D0–D31
A0–A25
NWAIT
Data Bus
Address Bus
External Wait Signal
I/O
Output
Input
Low
Pulled-up input at reset
0 at reset
Static Memory Controller - SMC
NCS0–NCS7
NWR0–NWR3
NRD
NWE
NBS0–NBS3
Chip Select Lines
Write Signal
Read Signal
Write Enable
Byte Mask Signal
Output
Output
Output
Output
Output
CompactFlash Support
CFCE1–CFCE2
CFOE
CFWE
CFIOR
CFIOW
CFRNW
CFCS0–CFCS1
CompactFlash Chip Enable
CompactFlash Output Enable
CompactFlash Write Enable
CompactFlash IO Read
CompactFlash IO Write
CompactFlash Read Not Write
CompactFlash Chip Select Lines
Output
Output
Output
Output
Output
Output
Output
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
6
SAM9260 [DATASHEET]
Atmel-6221M-ATARM-SAM9260-Datasheet_13-Jan-16
MICROCHIP [ MICROCHIP TECHNOLOGY ]
