FX909AD2 Просмотр технического описания (PDF) - CML Microsystems Plc

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FX909AD2

Wireless Modem Data Pump

CML Microsystems Plc 

Wireless Modem Data Pump

FX909A

Figure 7 The Transmit Process

Figure 8 The Receive Process

Mobitex modem tasks:

B2 B1 B0

Receive Mode

0 0 0 NULL

0 0 1 SFH

Search for Frame Head

0 1 0 R3H

Read 3 byte Frame Head

0 1 1 RDB

Read Data Block

1 0 0 SFS

Search for Frame Sync

1 0 1 RSB

Read Single Byte

1 1 0 LFSB Load Frame Sync Bytes

1 1 1 RESET Cancel any current action

NULL

T7H

TDB

TQB

TSB

TSO

RESET

Transmit Mode

Transmit 7 byte Frame Head

Reserved

Transmit Data Block

Transmit 4 Bytes

Transmit Single Byte

Transmit Scrambler Output

Cancel any current action

© 1996 Consumer Microcircuits Limited

16

D/909A/4

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