at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 34

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

10.4.6
10.4.7
10.4.8
10.4.9
34
AT91SAM9G20 Preliminary
Multimedia Card Interface
USB Host Port
USB Device Port
Ethernet 10/100 MAC
Note:
• Each block contains two global registers that act on all three TC Channels
• One double-channel MultiMedia Card Interface
• Compatibility with MultiMedia Card Specification Version 2.2
• Compatibility with SD Memory Card Specification Version 1.0
• Compatibility with SDIO Specification Version V1.0.
• Card clock rate up to Master Clock divided by 2
• Embedded power management to slow down clock rate when not used
• MCI has two slots, each supporting
• Support for stream, block and multi-block data read and write
• Compliance with Open HCI Rev 1.0 Specification
• Compliance with USB V2.0 Full-speed and Low-speed Specification
• Supports both Low-Speed 1.5 Mbps and Full-speed 12 Mbps devices
• Root hub integrated with two downstream USB ports in the 217-LFBGA package
• Two embedded USB transceivers
• Supports power management
• Operates as a master on the Matrix
• USB V2.0 full-speed compliant, 12 MBits per second
• Embedded USB V2.0 full-speed transceiver
• Embedded 2,432-byte dual-port RAM for endpoints
• Suspend/Resume logic
• Ping-pong mode (two memory banks) for isochronous and bulk endpoints
• Six general-purpose endpoints
• Embedded pad pull-up
• Compatibility with IEEE Standard 802.3
– Three external clock inputs
– Five internal clock inputs
– Two multi-purpose input/output signals
– One slot for one MultiMediaCard bus (up to 30 cards) or
– One SD Memory Card
– Endpoint 0 and 3: 64 bytes, no ping-pong mode
– Endpoint 1 and 2: 64 bytes, ping-pong mode
– Endpoint 4 and 5: 512 bytes, ping-pong mode
TC Block 0 (TC0, TC1, TC2) and TC Block 1 (TC3, TC4, TC5) have identical user interfaces. See
Figure 8-1, “AT91SAM9G20 Memory Mapping,” on page 17
addresses.
for TC Block 0 and TC Block 1 base
6384B–ATARM–15-Dec-08