Nm9805
PCI + 1284 Printer Port
Features • Single 5V operation • Low power • PCI compatible 1284 printer port • Multi-mod...
Nm9805
PCI + 1284 Printer Port
Features Single 5V operation Low power PCI compatible 1284 printer port Multi-mode compatible controller (SPP, PS2, EPP, ECP) Fast data rates up to 1.5 Mbytes/s (parallel port) 16-byte FIFO (parallel) Re-map function for legacy ports Microsoft Compatible Software programmable mode selects 128-pin QFP package Applications Printer server Portable backup units Printer interface Add-on I/O cards Application Notes AN-9805
General Description The Nm9805 is a 1284 parallel port controller with PCI bus interface. Nm9805 fully supports the existing Centronics printer interface as well as PS/2, EPP, and ECP modes. The Nm9805 is ideally suited for PC applications, such as high speed parallel ports. The Nm9805 is available in a 128-pin QFP package. It is fabricated using an advanced submicron
CMOS process to achieve low drain power and high-speed requirements.
Ordering Information Commercial Grade Nm9805CV 128-QFP 0° C to +70° C
MosChip Semiconductor ♦ 3335 Kifer Rd, Santa Clara, CA 95051 ♦ Tel (408) 737-7141 ♦ Fax (408) 737-7708
Nm9805
PCI + 1284 Printer Port
Nm9805 Block Diagram
CLK nRESET AD0 - AD31 nFRAME, nIRDY nLOCK, IDSEL, nTRDY, nSTOP, nDEVSEL, nPARR,nSERR nC/BE0, nC/BE1, nC/BE3, nC/BE4
P C I I N T E R F A C E
P C I
PD0 - PD7
B R I D G E
1284 Parallel Port
FAULT, SLCT, PE nACK, nBUSY nSTROBE, nAUTOFDX INIT, nSLCTIN
nINTA
PCI Clk
EEprom Interface
EE-CLK
EE-CS
EE-DO
Page 2
EE-EN
EE-DI
Rev. 1.1
Nm9805
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