CC1110-RTR1 datasheet(55/203 Pages) TI

55 / 203 page

CC1110

CC1110 PRELIMINARY Datasheet (Rev. 1.01) SWRS033A

Page 55 of 202

Interrupt number

Interrupt name

RFTXRX

DMA

ADC

URX0

URX1

ENC

P0INT

P2INT

UTX0

UTX1

P1INT

WDT

Polling sequence

Table 32: Interrupt Polling Sequence

12.8 Oscillators and clocks

The

CC1110 has one internal system clock. The

source for the system clock can be either a 13

MHz high speed RC oscillator or a 26 MHz

crystal oscillator. Clock control is performed

using the CLKCON SFR register described in

section 13.10.

The choice of oscillator allows a trade-off

between high-accuracy in the case of the

crystal oscillator and low power consumption

when the high-frequency RC oscillator is used.

Note that operation of the RF transceiver

requires that the crystal oscillator is used.

12.9 Debug Interface

The

CC1110 includes a debug interface that

provides a two-wire interface to an on-chip

debug module. The debug interface allows

programming the on-chip flash as well

providing access to memory and register

contents

and

debug

features

such

breakpoints,

single-stepping

and

modification.

The debug interface uses the I/O pins P2_1 as

Debug Data and P2_2 as Debug Clock during

Debug mode. These I/O pins can be used as

general purpose I/O only while the device is

not in Debug mode. Thus, the debug interface

does not interfere with any peripheral I/O pins.

12.9.1 Debug Mode

Debug mode is entered by forcing two rising

edge transitions on pin P2_2 (Debug Clock)

while the RESET_N input is held low.

While in Debug mode, pin P2_1 is the Debug

Data bi-directional pin and P2_2 is the Debug

Clock input pin.

12.9.2 Debug Communication

The debug interface uses an SPI-like two-wire

interface consisting of the Debug Data (P2_1)

and Debug Clock (P2_2) pins. Data is driven

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