PMB-2240 Siemens, PMB-2240 Datasheet - Page 10

• Manufacturer Part Number: PMB-2240
• Description: GSM Transmitter
• Manufacturer: Siemens

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.
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:
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
PMB 2240
TXON1
PUPLO2/BU, PUPLO2/FP
SLEEP, PDBUFRX
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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
connected to
connected to
connected to
10
GOLD-uC
TXON1
PUPLO2
general purpose port pin
05.97