RC96V24DP
Single Device Data/Fax Modem Data Pump
The Rockwell RC96V24DP is a low power, V.22 bis 2400 bps data/fax modem
data pump in a single VLSI package. The RC2324DPL is identical to the
RC96V24DP except fax modes are not provided. In this document, all
references to the RC96V24DP also apply to the RC2324DPL except for the fax
modes and as otherwise noted.
The modem operates over the public switched telephone network (PSTN), as
well as on point-to-point leased lines.
The modem supports data modes meeting the requirements specified in
CCITT recommendations V.22 bis, V.22, V.23, and V.21, as well as Bell 212A and
Bell 103.
The modem supports fax modes meeting the requirements specified in
CCITT V.29, V.27 ter, and V.21 channel 2 synchronous.
Internal HDLC support eliminates the need for an external serial input/output
(SIO) device or comparable functions in the host controller in products
incorporating error correction and T.30 protocols.
The modem includes two CMOS VLSI functions – a digital signal processor
(DSP) and an integrated analog function (IA). The RC96V24DP integrates these
functions into a single 68-pin plastic leaded chip carrier (PLCC).
Detailed hardware and software interface information is described in the
Designer's Guide (Order No. 822).
Functional Block Diagram
RC96V24DP
MODEM
DEVICE
TELEPHONE
LINE
INTERFACE
SPEAKER
AMPLIFIER
(OPTIONAL)
EYE
PATTERN
GENERATOR
(OPTIONAL)
HOST
PARALLEL
BUS
INTERFACE
(17)
SERIAL
INTERFACE
(5)
2
2
4
Product Features
•
Single CMOS VLSI device
•
Low power requirements
– Single voltage: + 5 Vdc ±5%
– Operating: 300 mW (typical)
– Sleep: 15 mW (typical)
•
2-wire operation
– Full- duplex (FDX) for data modes
– Half-duplex (HDX) for fax modes
•
Data configurations:
– V.22 bis, V.22, V.23, V.21
– Bell 212A, Bell 103
•
Fax configurations (RC96V24DP):
– V.29, V.27 ter, V.21 Channel 2
•
Voice mode
•
DTMF detection
•
Receive dynamic range: -9 dBm to -43 dBm
•
Transmit level: -10 dBm ±1 dB using internal
hybrid circuit; attentuation selectable in 1 dB
steps
•
Multi-mode data/fax detection support
•
V.22 bis fallback/fall-forward -2400/1200 bps
•
Serial data: synchronous and asynchronous
•
Parallel data: synchronous (including HDLC)
and asynchronous
•
Programmable ring detect
•
Programmable dialer
•
Programmable tone detect bandpass filters
•
Adjustable speaker output to monitor
received signal
•
Diagnostics
•
Host bus interface memory for
configuration, control, and parallel data;
8086 microprocessor bus compatible
•
5-pin serial data interface; TTL compatible
•
Equalization
– Adaptive equalizer in receiver
– Selectable and programmable fixed
compromise equalizers in both receiver
and transmitter
•
Loopback configurations
– Local analog, local digital, and remote
digital
•
Answer and originate handshake in data
modes
•
Training sequences for fax modes
•
Leased line operation
D96V24DSA
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