at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 808

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

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AT91SAM9G20 Preliminary
20 AT91SAM9G20 External Bus Interface .............................................. 133
21 Static Memory Controller (SMC) ......................................................... 157
22 SDRAM Controller (SDRAMC) ............................................................ 199
23 Error Corrected Code Controller (ECC) ............................................. 221
19.4 Arbitration .........................................................................................................124
19.5 Bus Matrix (MATRIX) User Interface ................................................................126
19.6 Chip Configuration User Interface ....................................................................131
20.1 Overview ..........................................................................................................133
20.2 Block Diagram ..................................................................................................134
20.3 I/O Lines Description ........................................................................................135
20.4 Application Example .........................................................................................137
20.5 Product Dependencies .....................................................................................140
20.6 Functional Description ......................................................................................140
20.7 Implementation Examples ................................................................................148
21.1 Overview ..........................................................................................................157
21.2 I/O Lines Description ........................................................................................157
21.3 Multiplexed Signals ..........................................................................................157
21.4 Application Example .........................................................................................158
21.5 Product Dependencies .....................................................................................158
21.6 External Memory Mapping ...............................................................................159
21.7 Connection to External Devices .......................................................................159
21.8 Standard Read and Write Protocols .................................................................163
21.9 Automatic Wait States ......................................................................................172
21.10 Data Float Wait States .....................................................................................177
21.11 External Wait ....................................................................................................181
21.12 Slow Clock Mode .............................................................................................187
21.13 Asynchronous Page Mode ...............................................................................190
21.14 Static Memory Controller (SMC) User Interface ...............................................193
22.1 Overview ..........................................................................................................199
22.2 I/O Lines Description ........................................................................................199
22.3 Application Example .........................................................................................200
22.4 Product Dependencies .....................................................................................202
22.5 Functional Description ......................................................................................204
22.6 SDRAM Controller (SDRAMC) User Interface .................................................211
23.1 Overview ..........................................................................................................221
6384B–ATARM–15-Dec-08