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Board Description
4.2.6.3
User Serial Com Port
The USART1 is used as a user serial com port. This USART1 is buffered with an RS-232 Transceiver
(TXD, RXD and handshake CTS/RTS control) and connected to the DB-9 male socket. Software must
assign the appropriate PIO pins (PB5 = RXD1, PB4 = TXD1, PD16 = RTS1, PD17 = CTS1) to enable the
UART1 function.
Figure 4-8.
User Serial Com Port
MN17
3 V 3
3 V 3
C152
1
16
C154
R S 2 3 2 COM PORT
100nF
3
15
100nF
MALE RIGHT ANGLE
C159
4
2
C157
100nF
R79
100K
R 8 1
100K
100nF
C161
1
6
5
6
100nF
2
7
PB4
11
14
3
8
4
PD16
PB5
PD17
10
12
9
7
1 3
8
9
5
J11
ADM 3 202ARNZ
Refer to the SAM9M10 datasheet for more information about the SAM9M10 USARTs.
4.2.6.4
4-10
USB Port
The SAM9M10-EKES features USB communication ports:
Two Host Ports: Full speed OHCI and High speed EHCI
One Device Port: High speed.
USB Host Port0 is directly connected to the first UTMI transceiver. The second Host Port (Port1) is mul-
tiplexed with the USB device High speed and connected to the second UTMI port.
One USB high/full speed type standard A connector
One USB interface Host/Device Micro AB connector
Refer to the SAM9M10 datasheet for detailed programming information.
AT91SAM9M10-EKES User Guide
11029A–ATARM–11-Jan-10
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