CMX868E2 View Datasheet(PDF) - MX-COM Inc
Part Name
Description
MFG CO.
'CMX868E2' PDF : 43 Pages View PDF
Low Power V.22bis Modem
25
4.10.5 Tx Data Register
Tx Data Register: 8-bit write-only.
C-BUS addresses $E3 and $E4
Bit: 7
6
5
4
3
2
1
0
Data bits to be transmitted
CMX868 Advance Information
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.
C-BUS address $E3 should normally be used, $E4 is for implementing the V.14 over-speed transmission
requirement in Start-Stop mode, see Section 4.1.
4.10.6 Rx Data Register
Rx Data Register: 8-bit read-only. C-BUS address $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.
¤2001 MX-COM, Inc.
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
Doc. # 20480205.007
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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