GR64 Integrators Manual
Page: 77/104
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Fast-mode signal characteristics
Parameter
Min
Typ
Max
Unit
SCL clock frequency
0
400
kHz
LOW period of the SCL clock
1.3
µ
s
HIGH period of the SCL clock
0.6
µ
s
Data hold time
0
0.9
µ
s
Capacitive load for each bus line
400
pF
5.20
Burst Transmission (TX_ON)
Pin
Name
Direction
Function
35
TX_ON
Output
Transmit indication
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
Condition
Min
Typ
Max
Unit
Output Voltage High (VOH)
IL = 80uA
2.0
2.8
3.0
V
Output Voltage low (VOL)
IL = 80uA
1.0
V
