Burst Transmission (Tx_On) - Wavecom GR64 GSM/GPRS Integrator's Manual

Fast-mode signal characteristics
Parameter
SCL clock frequency
LOW period of the SCL clock
HIGH period of the SCL clock
Data hold time
Capacitive load for each bus line

5.20 Burst Transmission (TX_ON)

Pin
35
Burst transmission is the period during which the GSM transceiver is transmitting RF
signals. TX_ON is an indicator that the Wireless CPU is transmitting.
A typical application may use TX_ON to blank adjacent receiver circuitry as a means of
protecting sensitive input stages. TX_ON is active HIGH.
TX_ON characteristics
Parameter
Output Voltage High (VOH)
Output Voltage low (VOL)
GR64 Integrators Manual
Page: 77/104
Name Direction
TX_ON Output
Condition
IL = 80uA
IL = 80uA
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Min Typ
0
1.3
0.6
0
Function
Transmit indication
Min Typ
2.0 2.8
Max Unit
400 kHz
µs
µs
µs
0.9
400 pF
Max Unit
3.0 V
1.0 V