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RC224ATL Datasheet(PDF) 74 Page - Synaptics Incorporated. |
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RC224ATL Datasheet(HTML) 74 Page - Synaptics Incorporated. |
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74 / 104 page  6.0 Operation RC224ATL/224ATLV 6.4 Data/Fax Auto Answering EmbeddedModem Family 6-10 Conexant D224ATLVDSC Table 6-2. Terminal Called by a 1200 bps Data Modem DTE Command DCE Response Comments —— Assume DCE in fax mode (FCLASS = 1), DTE running fax communication package, and DCD is off. AT&C1 OK DTE commands DCD to follow data carrier. ATS9=n OK DTE defines the data mode connection time. AT+FAA=1 OK DTE enables data/fax auto answer mode. —— DTE sets the communication rate to the data modem rate (e.g., 2400 bps) prior to an incoming call. — RING Terminal is being called. ATA — DTE commands DCE to go off-hook and start auto answer. —— DCE determines caller as data modem and establishes connection with caller. —— DCE turns on DCD to indicate data connection is established. —— DCE then waits in on-line command mode. —DATA DCE indicates data modem connection is established. AT commands OK DTE optionally sends any commands to DCE to restore conditions required by data modem communications package. ATO CONNECT 1200 DTE instructs DCE to switch from on-line command to data state. —— DTE then transfers control to data modem package. —— Fax package remains in background polling DCD to check connection status. —— DCE response will then be read by data modem communication rate to 1200 bps. — “Callers data” DTE sends/receives data. —— Caller hangs up. DTE detects carrier loss and turns off DCD. — NO CARRIER DCE indicates connection with caller has terminated. —— DTE fax communications software, running in background, sees DCD turn off, and regains control from data modem package. |
Número de pieza similar - RC224ATL |
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Descripción similar - RC224ATL |
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