Method for power down interrupt in a data modem

Philippe D'Audiger et al., "A Single Chip Modem", IEEE, 1989, pp. 4-23 to 4-25.

S.M. Si et al., "Digital Signal Processing for Automode Modem", IEEE, 1992, pp. 831-835.

S.J. Awcock et al., "Development of a Digital HF Modem Using Simulation for Design Development and Proving", IEE, Jul. 199, pp. 383-390.

Philip Mattos, "Software Demodulation Allows Multi-Standard Terminals to Cover SAT-COMMS Data, GPS and Cellular without Duplication", IEE, 1995, pp. 4/1-4/5.

Greg Kremer et al., "A Single Processor Packet Radio Modem for Land Mobile Vehicle Tracking Applications", IEEE, 1995, pp. 842-846.

Lin Zhang et al., "An Extremely Robust Turbo Coded HF Modem", IEEE, 1996, pp. 691-695.

Ronald Bowman et al., "Improved Performance for Integrated Voice and Data in a Tactical Packet Radio Network", IEEE, 1998, pp. 447-451.

F. Monteiro et al., "A New Processor Architecture Dedicated to

Digital Modem Applications", IEEE, 1998, pp. IV-494 to 497.

Kamran Azadet et al., "Low-Power Equalizer Architectures for

High-Speed Modems", IEEE, 1998, pp. 118-126.

P. Lallo, "Adaptive Software Modem Technology", IEEE, 2001, pp.

175-179.

Wang Hua et al., "Software Instrument Based on Software Radio Concept", IEEE, 2001, pp. 459-463.

Cheng Luo et al., "Software Radio Platform Based on General PC and Network", IEEE, 2001, pp. 1912-1916.

M.B. Jorgenson et al., "An Examination of HF Modem Platform Architectures", IEEE, 2001, pp. 460-464.

Kang, "Design and Implementations of a Software Defined Radio Scheme Based Modem for High Speed Multimedia Data Service", IEEE, 2002, pp. 889-892.

International Preliminary Examination Report/PCT/US03/14608/ mailed Apr. 19, 2005.

"EPM-1 Hardware Reference Manual" Radisys Corporation; Aug. 1997, XP0024002211; Retrieved from the Internet: URL: http:// www.radisys.com/files/support downloads/Epm-1 hrm. pdf#search=%22%ISA22%20bus%20flash%epld22> retrieved on Sep. 25, 2006.

"PCI Local Bus Specification Rev 2.1 1995", PCI Special Interest Group, 1995.

R.B. Tremaine, et al.: "IBM Memory Expansion Technology (MXT)": vol. 45, No. 2, Mar. 2, 2001.

* cited by examiner

28VDCJN (x2) 2BVDC_RTN (x2) RDY.OSCRT.RELAY RDY_DSCRT6 . PWR_CNTRL#(x3)

GND(x63) ■

ZEROIZE!* CPM PRESENT* (x2) ■ CPM FAILS (x2) • CPM_WOOG_DIS# (x2) CPM USB PO 6 (x2) CPM~USB~*5V(x12) CONFIG (x3) RT_ADDR(xB) 1553_BUS 6 (x2) ■

SPARE 4Z3_TXD SPARE_423_TXC • SPARE_423_RXD 6 • SPARE 423 RXC 6 ■

SPARE 423 RTS
SPARE_423_CTS 6 •

EPLRS 422_TXD 6
EPLRS_422 TXC 6
EPLRS_422 RXD 6
EPLRS 422 RXC 6
EPLRS 422_RTS 6
EPLRS_422_CTS 6

HF_423 TXD ■

HF 423 RXD 6

HF 423 RXC 6

HF_RTK#

HF MUTE*

HF SYSTEM KEY_IN#

HF MODEM RX BUSY*

HF_CREW_PTT#

HF 232_TXD
HF~232 RXD
HF 232 RTS
HF_232_CTS

SIP 232 TXD(x2)
SIP 232 RXD(x2)
SIP_232_RTS(x2)
SIP_232_CTS(x2)

GSIP 423 PTT(x4)
RELAY* (x2)