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CC2430F32RTC 参数 Datasheet PDF下载

CC2430F32RTC图片预览
型号: CC2430F32RTC
PDF下载: 下载PDF文件 查看货源
内容描述: 真正的系统级芯片解决方案的2.4 GHz IEEE 802.15.4 / ZigBee的 [A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee]
分类和应用: 电信集成电路
文件页数/大小: 212 页 / 1862 K
品牌: TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
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CC2430  
Radio  
:
Radio control state machine  
SLOTTED_ACK  
= 0  
PPDU  
Acknowledge  
tack = 12 symbol periods  
SLOTTED_ACK  
= 1  
tbackoffslot = 20 symbol periods  
PPDU  
Acknowledge  
tack = 12 - 30 symbol periods  
Figure 45: Acknowledge frame timing  
14.20 Radio control state machine  
SLEEP.XOSC_STB bit indicates whether the  
oscillator is running and stable or not (see  
page 67). This SFR register can be polled  
when waiting for the oscillator to start. It  
should be noted that an additional wait time  
after this event until selecting XOSC as source  
is needed. This is described in section  
13.1.4.2.  
CC2430 has a built-in state machine that is  
used to switch between different operation  
states (modes). The change of state is done  
either by using command strobes or by  
internal events such as SFD detected in  
receive mode.  
The radio control state machine states are  
shown in Figure 46. The numbers in brackets  
refer to the state number readable in the  
FSMSTATE status register. Reading the  
FSMSTATEstatus register is primarily for test /  
debug purposes. The figure assumes that the  
device is already placed in the PM0 power  
mode.  
For test purposes, the frequency synthesizer  
(FS) can also be manually calibrated and  
started by using the STXCALN or ISTXCALN  
command strobe (see section 14.34 and Table  
47). This will not start a transmission before a  
STXON command strobe is issued. This is not  
shown in Figure 46.  
Before using the radio in either RX or TX  
mode, the voltage regulator and crystal  
oscillator must be turned on and become  
stable. The voltage regulator and crystal  
oscillator startup times are given in the section  
7.4 on page 14.  
Enabling transmission is done by issuing a  
STXONor STXONCCAcommand strobe.  
Turning off RF can be accomplished by using  
the SRFOFFcommand strobe.  
After bringing the CC2430 up to Power Mode 0  
(PM0) from a low-power mode e.g. Power  
Mode 3 (PM3), all RF registers will retain their  
values thus placing the chip ready to operate  
at the correct frequency and mode. Due to the  
very fast start-up time, CC2430 can remain in a  
low-power mode until a transmission session  
is requested.  
The voltage regulator for the radio is enabled  
by  
setting  
the  
RF  
register  
bit  
RFPWR.RREG_RADIO_PD to 0. The interrupt  
flag RFIF.IRQ_RREG_ONis set to 1 when the  
voltage regulator has powered-up.  
The crystal oscillator is controlled through the  
Power  
Management  
Controller.  
The  
CC2430 Data Sheet (rev. 2.1) SWRS036F  
Page 166 of 211