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參數(shù)資料
| 型號： | T2803-PLS |
| 廠商： | ATMEL CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | SPST to 4PST Slide DIP Switches |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC48 |
| 封裝： | 7 X 7 MM, MO-220, QFN-48 |
| 文件頁數(shù)： | 16/27頁 |
| 文件大小： | 501K |
| 代理商： | T2803-PLS |
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16
T2803 [Preliminary]
4572G–DECT–01/04
Table 4.
Control Signals — Modes
Modes
Serial Programming
Bus
The transceiver is programmed by the 3-wire bus (CLOCK, DATA and ENABLE).
After setting enable signal to low condition, on the rising edge of the clock signal, the
data is transferred bit by bit into the shift register, starting with the MSB-bit. When the
enable signal has returned to high condition, the programmed information is loaded into
the addressed latches according to the address bit condition (last bit). Additional leading
bits are ignored and there is no check made how many pulses arrived during enable low
condition. During enable low condition, the bus current is increased to speed up the bus
logic.
The programming of the transceiver is separated into two data words. Data word 1 con-
trols mainly the channel information together with settings, which are closely related with
the channel. Data word 2 holds setup information, which is adjusted during production.
TX Mode
RX Mode
RSSI Only
PU_REG
1
1
1
PU_VCO
1
1
1
PU_RX/TX
1
1
1
PU_PLL
1
1
1
RX_ON
0
1
1
TX_ON
1
0
1
BB filter
OFF
ON
OFF
Demodulator
OFF
ON
OFF
IF amplifiers and RSSI
OFF
ON
ON
IR mixer
OFF
ON
ON
RX switch
OFF
ON
ON
TX switch
ON
OFF
OFF
TX driver
ON
OFF
OFF
Ramp generator
ON
OFF
OFF
Programmable counter
ON
ON
ON
Voltage-controlled oscillator
ON
ON
ON
Gaussian filter
ON
OFF
OFF
Phase detector/charge pump
ON
ON
ON
Reference counter
ON
ON
ON
Typical current consumption at V
S
= 3.2 V
56 mA
85 mA
82 mA
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