AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 452
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AT91SAM7X128
Manufacturer Part Number
AT91SAM7X128
Description
MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
Manufacturer
Atmel
Datasheet
1.AT91SAM7X512-AU-999.pdf
(687 pages)
Specifications of AT91SAM7X128
Package
100LQFP
Device Core
ARM7TDMI
Family Name
91S
Maximum Speed
55 MHz
Ram Size
32 KB
Program Memory Size
128 KB
Operating Supply Voltage
1.8|3.3 V
Data Bus Width
32 Bit
Program Memory Type
Flash
Number Of Programmable I/os
62
Interface Type
CAN/Ethernet/SPI/I2S/TWI/USART/USB
On-chip Adc
8-chx10-bit
Operating Temperature
-40 to 85 °C
Number Of Timers
3
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34.5
34.5.1
Figure 34-3. Example of USB V2.0 Full-speed Communication Control
The Control Transfer endpoint EP0 is always used when a USB device is first configured (USB v. 2.0 specifications).
34.5.1.1
Table 34-2.
452
Transfer
Control
Isochronous
Interrupt
Bulk
Functional Description
AT91SAM7X512/256/128 Preliminary
USB V2.0 Full-speed Introduction
Software Client 1
USB V2.0 Full-speed Transfer Types
USB Communication Flow
Unidirectional
Unidirectional
Unidirectional
Bidirectional
Direction
USB Host V2.0
The USB V2.0 full-speed provides communication services between host and attached USB
devices. Each device is offered with a collection of communication flows (pipes) associated with
each endpoint. Software on the host communicates with a USB device through a set of commu-
nication flows.
A communication flow is carried over one of four transfer types defined by the USB device.
Data Flow: Control Transfer
Data Flow: Bulk In Transfer
Data Flow: Bulk Out Transfer
Software Client 2
Not guaranteed
Not guaranteed
Not guaranteed
Guaranteed
Bandwidth
Data Flow: Control Transfer
Data Flow: Isochronous In Transfer
Data Flow: Isochronous Out Transfer
Supported Endpoint Size
8, 16, 32, 64
8, 16, 32, 64
USB Device endpoint configuration requires that
in the first instance Control Transfer must be EP0.
256
≤ 64
EP0
EP4
EP0
EP1
EP2
EP5
Error Detection
USB Device 2.0
Block 1
USB Device 2.0
Block 2
Yes
Yes
Yes
Yes
6120H–ATARM–17-Feb-09
Automatic
Retrying
Yes
Yes
No
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