CMX644AD2 View Datasheet(PDF) - MX-COM Inc
Part Name
Description
MFG CO.
'CMX644AD2' PDF : 31 Pages View PDF
Bell 212A / V.22 Modem with Call Progress and DTMF
29
CMX644A Preliminary Information
4
3.5
3
2.5
VIN 2
1.5
1
0.5
VtHI
VtLO
0
2.5
3
3.5
4
4.5
5
5.5
VDD
Figure 14: Typical Schmitt Trigger Input Voltage vs. VDD
6.1.4 Timing
6.1.4.1 UART Timing
Tx Timings (See Figure 6)
tDEL
Tx Delay from Tx data loaded
tLOAD
Tx Output to Tx reload signal
tUFL
Tx Parity to Tx Underflow flag set
Notes
1
1
1
Min.
Typ.
Table 28: Tx Timings - Transmit UART Function (Async)
Max.
0.833
0.833
1.667
Units
ms
ms
ms
Rx Timings (See Figure 7)
tRDY
Parity to Rx Data Ready flag set
Notes
1
Min.
Typ.
1.667
Table 29: Tx Timings - Receiver UART Function (Async)
Max.
Units
ms
UART Timing Notes
1. Measured without equalization.
2000 MX-COM, Inc.
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
Doc. # 20480197.006
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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