參數(shù)資料
型號(hào)： RF2968
廠商： RF MICRO DEVICES INC
元件分類(lèi)： 通信及網(wǎng)絡(luò)
英文描述： BLUETOOTHTM TRANSCEIVER
中文描述： SPECIALTY TELECOM CIRCUIT, PQCC32
封裝： 5 X 5 MM, PLASTIC, LCC-32
文件頁(yè)數(shù)： 15/20頁(yè)
文件大?。?/td> 150K
代理商： RF2968
Preliminary
11-131
RF2968
Rev A13 010912
11
T
Register 5 - IF Register 3 (Write-Only)
Bit Number
Bit Name
Comments
15
BypassSM
Selects or bypasses the state machine.
1: Bypass mode. Internal power-up signals can be directly controlled by programming of the
respective bits in this register [0:3, 6:7].
0: Normal mode. All internally controlled power-up signals are derived from the state machine.
14
BBC
Selects baseband control or internal timer control for determining the time at which to perform DC
estimation on the trailer bits.
1: Baseband control. The baseband drives BPKTCTL high at the end of the sync word.
0: Internal timer control.
13
N/A
Not assigned.
12
Test
IF test mode enable. Used only in IC verification; not for use in end product.
1: IF test mode
0: Normal mode
11
CalRxVGA
Calibration which compensates for the gain of the LNA, mixer, and VGA. See “Special Modes: Cal-
ibration”.
10
Cal_Tx_PLL
Calibrates the K
0
(gain of the current controlled oscillator) of the TX PLL and, by nature of the
design, calibrates the K
0
of the RX PLL. See “Special Modes: Calibration”.
9
Cal_Gauss_Cell
Calibration which compensates for the offset and the amplitude of the Gaussian TX data that mod-
ulates the TX PLL ICO. See “Special Modes: Calibration”.
8
Loopback
1: Loopback mode. The TX IF output is looped back to the RX IF input.
0: Normal mode
7
PU_XTAL
Powers up the crystal oscillator circuitry. See “BypassSM” bit.
1: Power on
0: Power off
6
PU_MULT
Powers up the frequency multiplier for the FM demodulator clock. See “Bypass SM” bit.
1: Power on
0: Power off
5
CalRxFil
Calibrates the channel filter, demodulator low pass filter, and AC coupling filter in the DC estima-
tion circuit in the receiver, as well as the Gaussian filter and GFSK harmonic filter in the transmit-
ter. See “Special Modes: Calibration”.
4
CalRXPLL_Int
Calibration which compensates for the offset of the RX data path in the RX PLL interface circuit.
See “Special Modes: Calibration”.
3
PU_PA
Powers up the transmit output amplifier. See “BypassSM” bit.
1: Power on
0: Power off
2
PU_RX
Powers up all receiver and synthesizer circuits. See “BypassSM” bit.
1: Power on
0: Power off
1
PLL_BW
Selects the loop bandwidth of the RF PLL by controlling the state of the RSHUNT pin. Under state
machine control, this switch is executed according to the setting of the PLLDel[1:0] bits.
1: Narrow bandwidth. RSHUNT is short-circuited to ground.
0: Wide bandwidth. RSHUNT is a high impedance.
0
PU_TX
Powers up all transmitter and synthesizer circuits except for the output amplifier. See “BypassSM”
bit.
1: Power on
0: Power off
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