R96EFX

The Rockwell R96EFX MONOFAX modem is a synchronous 9600 bits per second (bps} half-duplex modern with error detection. The modem is housed in a single VLSI device package. The modem can operate over the public switched telephone network (PSTN) through line terminations provided by a data access arrangement The R96EFX is designed for use in Group 3 and Group 2 facsimile machines. The modem satisfies the requirements specified in CCITT recommendations V.29, V.27 ter, V.21 Channel 2, T.3, and T.4, and meets the binary signaling requirements of T.30. The modem can operate at 9600, 7200, 4800, 2400, or 300 bps. and also includes the V.27 ter short training sequence option. The modem can also perform HDLC framing according to T.30 at 9600, 7200, 4800, 2400, or 300 bps. The voice mode allows the host computer to efficiently transmit and receive audio signals and messages. The modem includes three programmable tone detectors which operate concurrently with the V.21 channel 2, Group 2, and voice mode receivers. The modem is available in either a 68-pin plastic leaded chip carrier (PLCC) package or a 64-pin quad in-line package Figure 1 shows the modem in the PLCC. The general modem interface is illustrated in Figure 2. Additional modem information is described in the 9600 bps MONOFAX Modem Designer's Guide ({Order No. 820).

The features of R96EFX can be summarized as (1)group 3 and group 2 facsimile transmission/reception - CClTT V.29, V.27 ter, T.30, V.21 Channel 2 T.3, T.4 - HDLC framing at all speeds; (2)V.27 ter short train; (3)voice mode transmission/reception; (4)half-duplex (2-wire); (5)concurrent FSK and tone reception; (6)maximum transmit level: 0 dBm programmable to -15 dBm; (7)receive dynamic range: 0 dBm to -43 dBm; (8)programmable dual tone generation; (9)Programmable tone detection; (10)Programmable turn-on and turn-off thresholds; (11)programmable interface memory interrupt; (12)diagnostic capability: allows telephone line quality monitoring; (13)equalization; automatic adaptive; selectable compromise cable; (14)DTE interface: two alternate ports: selectable microprocessor bus (6500 or 8085); CClTT V.24 (EIA-232-D compatible) interface; (15)TTL and CMOS compatible; (16)low power consumption: 370 mW (typical); (17)single package: 68-pin PLCC; 64-pin QUIP; (18)Compatible with R144EFX, R96MFX, R96DFX, and R96VFX modems.

The absolute maximum ratings of R96EFX are (1)operating temperature:0°C to 70°C; (2)storage temperature: -55°C to 125°C; (3)relative humidity: up to 90% noncondensing, or a wet bulb temperature up to 35°C, whichever is less.