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SCN2661CA1F28 Datasheet(PDF) 9 Page - NXP Semiconductors |
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SCN2661CA1F28 Datasheet(HTML) 9 Page - NXP Semiconductors |
9 / 19 page Philips Semiconductors Product specification SCN2661/SCN68661 Enhanced programmable communications interface (EPCI) 1994 Apr 27 9 Table 4. 68661 Register Addressing CE A1 A0 R/W FUNCTION 1 0 0 0 0 0 0 0 0 X 0 0 0 0 1 1 1 1 X 0 0 1 1 0 0 1 1 X 0 1 0 1 0 1 0 1 3-State data bus Read receive holding register Write transmit holding register Read status register Write SYN1/SYN2/DLE registers Read mode register 1/2 Write mode register 1/2 Read command register Write command register LOAD MODE REGISTER 1 LOAD MODE REGISTER 2 SYNCHRONOUS? LOAD SYN 1 REGISTER DOUBLE SYNC? LOAD SYN 2 REGISTER TRANSPARENT MODE? LOAD DLE REGISTER INITIAL RESET N Y Y N N Y TRANSPARENT MODE? Y N LOAD COMMAND REGISTER OPERATE RECONFIGURE? N Y DISABLE RCVR AND XMTR NOTE: SYN1 Register must be written before SYN2 can be written, and SYN2 before DLE can be written. NOTE: Mode Register 1 must be written before 2 can be written. Mode Register 2 need not be programmed if external clocks are used. SD00079 Figure 1. 68661 Initialization Flowchart |
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