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參數(shù)資料
| 型號(hào)： | CC113LRTKT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQCC20 |
| 封裝： | 4 X 4 MM, GREEN, PLASTIC, VQFN-20 |
| 文件頁數(shù)： | 36/75頁 |
| 文件大?。?/td> | 1454K |
| 代理商： | CC113LRTKT |
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CC113L
SWRS108A
Page 41 of 68
are not exceeded.
By setting the CSn pin low, the voltage
regulator to the digital core turns on and the
crystal oscillator starts. The SO pin on the SPI
interface must go low before the first positive
edge
of
SCLK
(setup
time
is
given
in
If the chip is programmed to enter power-down
mode (SPWD strobe issued), the power will be
turned off after CSn goes high. The power and
crystal oscillator will be turned on again when
CSn goes low.
The voltage regulator for the digital core
requires one external decoupling capacitor.
The voltage regulator output should only be
used for driving the C113L.
23 General Purpose / Test Output Control Pins
The three digital output pins GDO0, GDO1,
and GDO2 are general control pins configured
with
respectively. Table 29 shows the different
signals that can be monitored on the GDO
pins. These signals can be used as inputs to
the MCU.
GDO1 is the same pin as the SO pin on the
SPI interface, thus the output programmed on
this pin will only be valid when CSn is high.
The default value for GDO1 is 3-stated which
is useful when the SPI interface is shared with
other devices.
The
default
value
for
GDO0
is
a
135 - 141 kHz clock output (XOSC frequency
divided by 192). Since the XOSC is turned on
at power-on-reset, this can be used to clock
the MCU in systems with only one crystal.
When the MCU is up and running, it can
change the clock frequency by writing to
If the IOCFGx.GDOx_CFG setting is less than
0x20 and IOCFGx_GDOx_INV is 0 (1), the
GDO0 and GDO2 pins will be hardwired to 0
(1), and the GDO1 pin will be hardwired to 1
(0) in the SLEEP state. These signals will be
hardwired until the CHIP_RDYn signal goes
low.
If the IOCFGx.GDOx_CFG setting is 0x20 or
higher, the GDO pins will work as programmed
also in SLEEP state. As an example, GDO1 is
high
impedance
in
all
states
if
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