SAM3SD8C Atmel Corporation, SAM3SD8C Datasheet - Page 358

• Manufacturer Part Number: SAM3SD8C
• Manufacturer: Atmel Corporation

21.5.3.2
21.5.4
11090A–ATARM–10-Feb-12
11090A–ATARM–10-Feb-12
In Application Programming (IAP) Feature
Communication Endpoints
The device also handles some class requests defined in the CDC class.
Table 21-4.
Unhandled requests are STALLed.
There are two communication endpoints and endpoint 0 is used for the enumeration process.
Endpoint 1 is a 64-byte Bulk OUT endpoint and endpoint 2 is a 64-byte Bulk IN endpoint. SAM-
BA Boot commands are sent by the host through endpoint 1. If required, the message is split by
the host into several data payloads by the host driver.
If the command requires a response, the host can send IN transactions to pick up the response.
The IAP feature is a function located in ROM that can be called by any software application.
When called, this function sends the desired FLASH command to the EEFC and waits for the
Flash to be ready (looping while the FRDY bit is not set in the MC_FSR register).
Since this function is executed from ROM, this allows Flash programming (such as sector write)
to be done by code running in Flash.
The IAP function entry point is retrieved by reading the NMI vector in ROM (0x00800008).
This function takes one argument in parameter: the command to be sent to the EEFC.
This function returns the value of the MC_FSR register.
Request
SET_LINE_CODING
GET_LINE_CODING
SET_CONTROL_LINE_STATE
Handled Class Requests
Definition
Configures DTE rate, stop bits, parity and number of
character bits.
Requests current DTE rate, stop bits, parity and number
of character bits.
RS-232 signal used to tell the DCE device the DTE
device is now present.
SAM3S8/SD8
SAM3S8/SD8
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