Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Hoja De Datos

Atmel

Los códigos de productos

AT91SAM9M10-G45-EK

520

SAM9M10 [DATASHEET]

6355F–ATARM–12-Mar-13

Figure 31-56.

Automatic Echo Mode Configuration

31.7.9.3

Local Loopback Mode

Local loopback mode connects the output of the transmitter directly to the input of the receiver, as shown in

. The TXD and RXD pins are not used. The RXD pin has no effect on the receiver and the TXD pin is contin-

uously driven high, as in idle state.

Figure 31-57.

Local Loopback Mode Configuration

31.7.9.4

Remote Loopback Mode

Remote loopback mode directly connects the RXD pin to the TXD pin, as shown in

. The transmitter

and the receiver are disabled and have no effect. This mode allows bit-by-bit retransmission.

Figure 31-58.

Remote Loopback Mode Configuration

Receiver

Transmitter

RXD

TXD

Receiver

Transmitter

RXD

TXD

1

Receiver

Transmitter

RXD

TXD

1