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ST7538

FUNCTIONAL DESCRIPTION

Carrier Frequencies

ST7538 is a multi frequency device: eight programmable Carrier Frequencies are available (see table 1).

Only one Carrier could be used a time. The communication channel could be varied during the normal

working Mode to realize a multifrequency communication.

Selecting the desired frequency in the Control Register the Transmission and Reception filters are accord-

ingly tuned.

Table 1.

Baud Rates

ST7538 is a multi Baud rate device: four Baud Rate are available (See table 2).

Table 2.

Note: 1. Default value

2. Frequency deviation.

3. Deviation =

∆F / (Baud Rate)

4. Deviation 0.5 Not Allowed

FCarrier

F (KHz)

F0

60

F1

66

F2

72

F3

76

F4

82.05

F5

86

F6

110

132.5

Baud Rate [Baud]

600

600

1200

600

1200

0.5

1

2400

0.5

1

4800

2400

4800

0.5

1