Table 3-1.
Pin Name
Signal Description by Peripheral
Function
Type
EBI for NAND Flash/SmartMedia Support
Active
Level
Comments
SMCS
SMOE
SMWE
NAND Flash/SmartMedia Chip Select
NAND Flash/SmartMedia Output Enable
NAND Flash/SmartMedia Write Enable
SDRAM Controller
Output
Output
Output
Low
Low
Low
SDCK
SDCKE
SDCS
BA0 - BA1
SDWE
RAS - CAS
SDA10
SDRAM Clock
SDRAM Clock Enable
SDRAM Controller Chip Select
Bank Select
SDRAM Write Enable
Row and Column Signal
SDRAM Address 10 Line
Output
Output
Output
Output
Output
Output
Output
Burst Flash Controller
Low
Low
High
Low
BFCK
BFCS
BFAVD
BFBAA
BFOE
BFRDY
BFWE
Burst Flash Clock
Burst Flash Chip Select
Burst Flash Address Valid
Burst Flash Address Advance
Burst Flash Output Enable
Burst Flash Ready
Burst Flash Write Enable
Output
Output
Output
Output
Output
Input
Output
Multimedia Card Interface
Low
Low
Low
Low
High
Low
MCCK
MCCDA
MCDA0 - MCDA3
MCCDB
MCDB0 - MCDB3
Multimedia Card Clock
Multimedia Card A Command
Multimedia Card A Data
Multimedia Card B Command
Multimedia Card B Data
USART
Output
I/O
I/O
I/O
I/O
SCK0 - SCK3
TXD0 - TXD3
RXD0 - RXD3
RTS0 - RTS3
CTS0 - CTS3
DSR1
DTR1
DCD1
RI1
Serial Clock
Transmit Data
Receive Data
Ready To Send
Clear To Send
Data Set Ready
Data Terminal Ready
Data Carrier Detect
Ring Indicator
I/O
Output
Input
Output
Input
Input
Output
Input
Input
6
AT91RM9200
1768MS–ATARM–09-Jul-09
ATMEL [ ATMEL CORPORATION ]
