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參數(shù)資料
| 型號(hào)： | PMB2240 |
| 廠商： | SIEMENS A G |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | GSM-Transmitter |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQFP48 |
| 封裝： | PLASTIC, TQFP-48 |
| 文件頁數(shù)： | 10/31頁 |
| 文件大?。?/td> | 1663K |
| 代理商： | PMB2240 |
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The reproduction, transmission or use of this document is not permitted without express written authority. Offenders will be liable for damages. All
rights, including rights created by patent grant or registration of a utility model or design, are reserved.
Siemens AG
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The PMB 2240 has five Power down inputs.
PD = Low means that the respective part of the chip is in power down mode.
TXON1:
TXON1 /\ PUPLO2/FP
SLEEP:
PUPLO2/BU:
PUPLO2/FP:
PDBUFRX /\ SLEEP
Modulator, mixer, Bufmi1, Bufmi2
%2 divider
BufRF, prescaler with its input buffer BufPLL
Input buffer BufTX for external IF oscillator-signal
fixed-PLL, (%492; %13; phase detector, charge pump)
BufRX
For normal operation only three modes are used: sleep mode, TX-mode, RX-mode. Depending on the
application some power down-pins can be combined, and others can be fixed to supply rails.
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In application with PMB2405 and GOLD-uC the power down pins of PMB2240 must be connected to
the timing signals of GOLD-uC as follows:
PMB 2240
TXON1
PUPLO2/BU, PUPLO2/FP
SLEEP, PDBUFRX
GOLD-uC
TXON1
PUPLO2
general purpose port pin
connected to
connected to
connected to
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