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)： 16/20頁(yè)
文件大?。?/td> 150K
代理商： RF2968
Preliminary
11-132
RF2968
Rev A13 010912
11
T
Register 6 - IF Register 4 (Write-Only)
Register 7 - PLL Control (Write-Only)
PLLDel [1:0]:
DivR [2:0]:
Bit Number
Bit Name
Comments
0-15
N/A
Not Assigned
Bit Number
Bit Name
Comments
15
Set_Tx_PLL_LF_Ext Configures the LPO pin as a test pin when bits LPO[1:0] are set high.
1: Test mode. LPO is connected to the IF PLL loop filter of the transmitter.
(See “Special Modes: Transmitter Test Mode”.)
0: Normal mode. LPO is not connected to the IF PLL loop filter of the trans-
mitter.
13 - 14
PLLDel [1:0]
Determines the time in which the PLL remains in high bandwidth mode
before switching to low bandwidth mode. In high bandwidth mode, the PLL
loop bandwidth is optimized for fast frequency locking. In low bandwidth
mode, the loop bandwidth is optimized for low phase noise. See below. See
also pin descriptions of D0 and RSHUNT, and bit PLL_BW (Register 5, Bit
1).
12
RSSI_Test
Configures the RSSI circuitry to operate continuously for test purposes.
1: Test mode. Continuous operation.
0: Normal mode. Packet-based operation.
9 - 11
DivR [2:0]
Selects the external crystal frequency. See below.
8
TX_EN
Powers up the TX voltage and current bias circuits and the TX PLL’s ICO
voltage threshold set circuit.
7
RX_EN
Powers up the RX voltage and current bias circuits.
0 - 6
PLL [6:0]
Sets the RF PLL frequency. See below.
PLLDel [1:0]
Delay (us)
00
0
01
50
10
100
11
150
DivR [2:0]
Crystal Freq (MHz)
011
12
100
10
101
11
110
13
111
20
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