CC2430-RTR1-F64Z datasheet(72/234 Pages) TI

72 / 234 page

CC2430

CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A

Page 72 of 232

•

RT : RTS

•

CT : CTS

SPI:

•

MI : MISO

•

MO : MOSI

•

C : SCK

•

SS : SSN

P2DIR.PRIP0

selects

the

order

precedence

when

assigning

several

peripherals to port 0. When set to 01, USART1

has precedence. Note that if UART mode is

selected and hardware flow control is disabled,

USART0 or timer 1 will have precedence to

use ports P0_2 and P0_3.

P2SEL.PRI3P1 and P2SEL.PRI2P1 select

the order of precedence when assigning

several peripherals to port 1. USART1 has

precedence when the former is set to 1 and

the latter is set to 0. Note that if UART mode is

selected and hardware flow control is disabled,

USART0 or timer 3 will have precedence to

use ports P2_4 and P2_5.

13.1.4.3 Timer 1

PERCFG.T1CFG selects whether to use

alternative 1 or alternative 2 locations.

In Table 36, the Timer 1 signals are shown as

the following:

•

0 : Channel 0 capture/compare pin

•

1 : Channel 1 capture/compare pin

•

2 : Channel 2 capture/compare pin

P2DIR.PRIP0

selects

the

order

precedence

when

assigning

several

peripherals to port 0. When set to 10 or 11 the

timer 1 channels have precedence.

P2SEL.PRI1P1 and P2SEL.PRI0P1 select

the order of precedence when assigning

several peripherals to port 1. The timer 1

channels have precedence when the former is

set low and the latter is set high.

13.1.4.4 Timer 3

PERCFG.T3CFG selects whether to use

alternative 1 or alternative 2 locations.

In Table 36, the Timer 3 signals are shown as

the following:

•

0 : Channel 0 capture/compare pin

•

1 : Channel 1 capture/compare pin

P2SEL.PRI2P1

selects

the

order

precedence

when

assigning

several

peripherals to port 1. The timer 3 channels

have precedence when the bit is set.

13.1.4.5 Timer 4

PERCFG.T4CFG selects whether to use

alternative 1 or alternative 2 locations.

In Table 36, the Timer 4 signals are shown as

the following:

•

0 : Channel 0 capture/compare pin

•

1 : Channel 1 capture/compare pin

P2SEL.PRI1P1

selects

the

order

precedence

when

assigning

several

peripherals to port 1. The timer 4 channels

have precedence when the bit is set.

13.1.5 ADC

When using the ADC in an application, Port 0

pins must be configured as ADC inputs. Up to

eight ADC inputs can be used. To configure a

Port 0 pin to be used as an ADC input the

corresponding bit in the ADCCFG register must

be set to 1. The default values in this register

select the Port 0 pins as non-ADC input i.e.

digital input/outputs.

The settings in the ADCCFG register override

the settings in P0SEL.

The ADC can be configured to use the

general-purpose I/O pin P2_0 as an external

trigger to start conversions. P2_0 must be

configured as a general-purpose I/O in input

mode, when being used for ADC external

trigger.

Refer to section 13.7 on page 127 for a

detailed description of use of the ADC.

13.1.6 Debug interface

Ports P2_1 and P2_2 are used for debug data

and clock signals, respectively. These are

shown as DD (debug data) and DC (debug

clock) in Table 36. When the debug interface

is in use, P2DIR should select these pins as

inputs. The state of P2SEL is overridden by the

debug

interface.

Also,

the

direction

overridden when the chip changes the

direction to supply the external host with data.

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