CC2510FX Datasheet, PDF (155/244 Pages) List of Unclassifed Manufacturers – True System-on-Chip with Low Power RF Transceiver and 8051 MCU

UxBAUD.BAUD_M[7:0]=0). If SPI master
mode does not need to receive data, the
maximum
SPI
rate
is
F/2
(UxGCR.BAUD_E[4:0]=19
and
UxBAUD.BAUD_M[7:0]=0). Setting higher
baud rates than this will give erroneous results.
C2510Fx / CC2511Fx
For SPI slave mode the maximum baud rate is
always F/8.
Note that the baud rate must be configured
before any other UART or SPI operations take
place (the baud rate should never be changed
when UxCSR.ACTIVE is asserted).
Baud rate [bps]
2400
4800
9600
14400
19200
28800
38400
57600
76800
115200
230400
UxBAUD.BAUD_M UxGCR.BAUD_E Error (%)
131
6
0.04
131
7
0.04
131
8
0.04
34
9
0.13
131
9
0.04
34
10
0.13
131
10
0.04
34
11
0.13
131
11
0.04
34
12
0.13
34
13
0.13
Table 55: Commonly used Baud Rate Settings for 26 MHz System Clock
Baud rate [bps]
2400
4800
9600
14400
19200
28800
38400
57600
76800
115200
230400
UxBAUD.BAUD_M UxGCR.BAUD_E Error (%)
163
6
0.08
163
7
0.08
163
8
0.09
59
9
0.13
163
9
0.10
59
10
0.14
163
10
0.10
59
11
0.14
163
11
0.10
59
12
0.14
59
13
0.14
Table 56: Commonly used Baud Rate Settings for 24 MHz System Clock
13.14.4 USART Flushing
The current operation can be aborted
(operation stopped and all data buffers
cleared)
by
setting
UxUCR.FLUSH=1.Asserting the FLUSH bit
should either be aligned with USART interrupts
or a wait time of one bit duration (at current
baud rate) should be added after setting the bit
to 1 before accessing the USART registers.
13.14.5 USART Interrupts
Each USART has two interrupts. These are the
USART x RX complete interrupt
(TCON.URXxIF) and the USART x TX
complete interrupt (IRCON2.UTXxIF). The
interrupts are enabled by setting
IEN0.URXxIE=1 and IEN2.UTXxIE=1,
respectively. Please see the previous sections
on how the interrupt flags are asserted in the
different modes of operation (UART RX, UART
TX, SPI master, and SPI Slave).
SWRS055D
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