MX809J Ver la hoja de datos (PDF) - MX-COM Inc

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componentes Descripción

Fabricante

MX809J

1200bps MSK Modem

MX-COM Inc  

MSK Modem

15

6.4.3 TX One Message, TX Checksum Enabled

MX809

RX/TX

TX OUTPUT

P1 P2 P S1 S2 A1 A2 A3 A4 A5 A6 C1 C2 H

NOTE 2

IRQ

READ STATUS

REGISTER

TX DATA READY

WRITE TO

TX DATA BUFFER

CHECKSUM

ON/OFF

P1 P2 P S1 S2 A1 A2 A3 A4 A5 A6

TX IDLE

Figure 7: TX One Message, TX Checksum Enabled

Notes:

1. H is the “Hangover bit” (Logic1) appended to the transmitted message before transmission is terminated.

2. Any number of preamble bytes can occur here.

3. Transmission terminates after C1, C2, and H. Termination occurs when no further data bytes are written

to the TX Data Buffer.

6.4.4 TX One Message, TX Checksum Not Enabled.

RX/TX

TX OUTPUT

IRQ

READ STATUS

REGISTER

P1 P2 P S1 S2 A1 A2 A3 A4 A5 A H

NOTE 2

NOTE 3

TX DATA READY

WRITE TO

TX DATA BUFFER

CHECKSUM

ON/OFF

P1 P2 P S1 S2 A1 A2 A3 A4 A5 A

TX IDLE

Figure 8: TX One Message, TX Checksum Not Enabled

Notes:

1. H is the “Hangover bit” (Logic1) appended to the transmitted message before transmission is terminated.

2. Any number of preamble bytes can occur here.

3. Any number of address/data bytes can occur here.

4. Transmission terminates when no further data bytes are loaded into the TX Data Buffer.

1998 MX-COM, Inc.

www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054

Doc. # 20480036.004

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA

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