CMX860 Просмотр технического описания (PDF) - MX-COM Inc

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CMX860

Telephone Signaling Transceiver

MX-COM Inc  

Telephone Signaling Transceiver

21

CMX860 Advance Information

Rx Data bits and

parity (FSK

Synchronous

mode)

Bit 2-0

Tones Detect

mode

Bit 2-0

These bits are ignored in Synchronous mode.

In Tones Detect Mode (Rx Mode Register b15-12 = 0001) b8-3 should be set to 000000.

Bits 2-0 select the detector type.

b2 b1 b0

1 0 0 Programmable Tone Pair Detect

0 1 1 Call Progress Detect

0 1 0 2100, 2225Hz Answer Tone Detect

0 0 1 DTMF Decode

0 0 0 Disabled

Table 6: Receive Mode Register

4.12.5 Tx Data Register: 8-bit write-only ($E3)

Bit: 7 6 5 4 3 2 1 0

Data bits to be transmitted

In Synchronous Tx data mode this register contains the next 8 data bits to be transmitted. Bit 0 is transmitted

first.

In Tx Start-stop mode the specified number of data bits will be transmitted from this register (b0 first). A Start

bit, a Parity bit (if required) and Stop bit(s) will be added automatically.

This register should only be written to when the Tx Data Ready bit of the Status Register is 1.

4.12.6 Rx Data Register: 8-bit read-only ($E5)

Bit: 7 6 5 4 3 2 1 0

Received data bits

In unformatted Rx data mode this register contains 8 received data bits, b0 of the register holding the earliest

received bit, b7 the latest.

In Rx Start-stop data mode this register contains the specified number of data bits from a received character,

b0 holding the first received bit.

¤2000 MX-COM, Inc.

www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054

Doc. # 20480222.001

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.

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