SCN2661AC1N28 NXP Semiconductors, SCN2661AC1N28 Datasheet
SCN2661AC1N28
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SCN2661AC1N28 Summary of contents
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Philips Semiconductors Enhanced programmable communications interface (EPCI) DESCRIPTION The Philips Semiconductors SCN2661 EPCI is a universal synchronous/asynchronous data communications controller chip that is an enhanced version of the SCN2651. It interfaces easily to all 8-bit and 16-bit microprocessors and may ...
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... Over recommended free-air operating temperature range and supply voltage range unless otherwise specified. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. 1994 Apr +5V +5% CC Commercial +70 C SCN2661BC1F28 SCN2661CC1F28 SCN2661AC1N28 SCN2661BC1N28 SCN2661CC1N28 SCN2661AC1A28 SCN2661BC1A28 SCN2661CC1A28 DATA BUS BUFFER HOLDING REGISTER BAUD RATE ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) DC ELECTRICAL CHARACTERISTICS SYMBOL SYMBOL PARAMETER PARAMETER Input voltage V Low IL V High IH Output voltage V Low High OH I Input leakage current IL 3-State output leakage current ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) AC ELECTRICAL CHARACTERISTICS SYMBOL SYMBOL PARAMETER PARAMETER Pulse width t Reset RES t Chip enable CE Setup and hold time t Address setup AS t Address hold AH t R/W control setup CS ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) the communication technique) and outputs a composite serial stream of data on the TxD output pin. Modem Control The modern control section provides interfacing for three input signals and three output signals used ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) 68661C (BRCLK = 5.0688MHz) MR23–20 BAUD RATE 0000 50 0001 75 0010 110 0011 134.5 0100 150 0101 300 0110 600 0111 1200 1000 1800 1001 2000 1010 2400 1011 3600 1100 4800 ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) Table 2. CPU-Related Signals INPUT/ PIN NAME PIN NO. OUTPUT RESET 21 I A0, A1 12, D0–D7 27,28,1,2,5–8 I/O TxRDY 15 O RxRDY 14 O TxEMT/DS ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) Transmitter The EPCI is conditioned to transmit data when the CTS input is Low and the TxEN command register bit is set. The 68661 indicates to the CPU that it can accept a ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) Table 4. 68661 Register Addressing ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) Table 5. Mode Register 1 (MR1) MR17 MR16 MR15 Sync/Async Parity Type Async: Stop bit length 00 = invalid 0 = Odd stop bit 1 = Even ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) Table 8. Status Register (SR) SR7 SR6 SR5 Data Set Data Carrier FE/SYN Ready Detect Detect 0 = DSR input 0 = DCD input Async: is High is High 0 = Normal 1 ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) 1. The transmitter output is connected to the receiver input. 2. DTR is connected to DCD and RTS is connected to CTS. 3. The receiver is clocked by the transmit clock. 4. The ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) Table 9. 68661 EPCI vs 2651 PCI FEATURE 1. MR2 BIT DLE detect – SR3 3. Reset of SR3, DLE detect 4. Send DLE – CR3 5. DLE stuffing in ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) TIMING DIAGRAMS RESET RESET t RES TRANSMIT 1 BIT TIME (1, 16 CLOCK PERIODS) TxC (INPUT) TxD t TxD t TCS TxC (OUTPUT ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) TIMING DIAGRAMS (Continued) TxRDY, TxEMT (Shown for 5-bit characters, no parity, 2 stop bits [in asynchronous mode]) TxC (1X TxD DATA 1 TxEN TxRDY TxEMT CE FOR WRITE OF THR ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) TIMING DIAGRAMS (Continued) 1X RxC t es XSYNC RxD X 0 RxC + RxD MISSING STOP BIT DETECTED SET FE BIT* NOTE the stop bit is present, the ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) TIMING DIAGRAMS (Continued) RxRDY (Shown for 5-bit characters, no parity, 2 stop bits [in asynchronous mode]) RxC RxD SYN 1 RxEN SYNDET STATUS BIT RxRDY CE FOR ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) TYPICAL APPLICATIONS ASYNCHRONOUS INTERFACE TO CRT TERMINAL 8 SCN2661/68661 BRCLK ASYNCHRONOUS INTERFACE TO TELEPHONE LINES 8 SCN2661/68661 BRCLK 1994 Apr 27 ADDRESS BUS CONTROL BUS DATA BUS RxD EIA TO TTL CONVERT (OPT) ...
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Philips Semiconductors Enhanced programmable communications interface (EPCI) TYPICAL APPLICATIONS (Continued) SYNCHRONOUS INTERFACE TO TERMINAL OR PERIPHERAL DEVICE ADDRESS BUS CONTROL BUS DATA BUS SCN2661/68661 SYNCHRONOUS INTERFACE TO TELEPHONE LINES SCN2661/68661 1994 Apr 27 RxD TxD SYNCHRONOUS RxC TERMINAL OR PERIPHERAL ...