T2801-PLH データシートの表示（PDF） - Atmel Corporation
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T2801-PLH Datasheet PDF : 27 Pages
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T2801
Control Signals
Table 2
Signal
I_CPSW
PU_REG
PU_VCO
PU_RX/TX
PU_PLL
RX_ON
TX_ON
Data Word 1
Bit D10
Data Word 1
Bit D9
Function
Controls the charge pump current
Activates AUX voltage regulator supplying the complete transceiver.
Activates VCO voltage regulator which supplies only the VCO.
Activates RX/TX switch.
Activates PLL circuits: PC, PD, CP, RC
Activates RX circuits: BBF, DEMOD, IF AMP, IR MIXER
Activates TX circuits: TX-DRIVER, RAMP GEN. Starts RAMP SIGNAL at RAMP OUT.
Activates GF in TX mode.
Activates MCC in TX mode.
Table 3
Mode
PU_REG
PU_VCO
PU_RX/TX
PU_PLL
RX_ON
TX_ON
BB filter
Demodulator
IF amplifiers and RSSI
IR mixer
RX switch
TX switch
TX driver
Ramp generator
Programmable counter
Voltage-controlled oscillator
Gaussian filter
Phase detector / charge pump
Modulation compensation circuit
Reference counter
Typ. current consumption / mA @ VS = 3.2 V
TX Mode
1
1
1
1
0
1
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
54
RX Mode
1
1
1
1
1
0
ON
ON
ON
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
ON
85
RSSI Only
1
1
1
1
1
1
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
OFF
ON
80
16 (27)
Preliminary Information
Rev. A9, 11-Dec-01
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