XR68C92IJTR-F MaxLinear

XR68C92/192 DUAL UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER August 2005 DESCRIPTION The XR68C92/192 is a Dual Universal Asynchronous Receiver and Transmitter with 8 (XR68C92) / 16 (XR68C192) bytes transmit and receive FIFO. The XR68C92/192 is a pin-to-pin compatible and an improved version of the XR68C681 and the Philips SCC68692 UART with faster data access and other additional features. The operating speed of the receiver and transmitter can be selected independently from a table of eighteen fixed baud rates, a 16X clock derived from a programmable counter/timer, or an external 1X or 16X clock. The baud rate generator and counter/timer can operate directly from a crystal or from external clock input. The XR68C92/192 provides a power-down mode in which the oscillator is stopped but the register contents are retained. The XR68C92/192 is fabricated in an advanced CMOS process to achieve low power and high speed requirements. FEATURES Added features in devices with top marking ofD2 and PLCC Package newer: 5 volt tolerant inputs Pin to pin compatible and improved version of the SCC68692 and XR68C681 Enhanced Multidrop mode operation with separate A3 7 39 -CS storage for address and data tags (9th bit) IP0 8 38 -RESET 8 Bytes transmit/receive FIFO (XR68C92) R/-W 9 37 XTAL2 16 Bytes transmit/receive FIFO (XR68C192) Standard baud rates from 50bps to 230.4kbps -DTACK 10 36 XTAL1 Non-standard baud rate of up to 1Mbps RXB 11 35 RXA Transmit and Receive trigger levels XR68C92 N.C. 12 34 N.C. Watch dog timer XR68C192 TXB 13 33 TXA Programmable clock source for receiver and trans- OP1 14 32 OP0 mitter of each channel 31 OP2 OP3 15 Single interrupt output OP5 16 30 OP4 7 Multipurpose inputs, 8 Multipurpose outputs 2.97 to 5.5 volt operation OP7 17 29 OP6 Programmable character lengths (5, 6, 7, 8) Parity, framing, and over run error detection Programmable 16-bit timer/counter On-chip crystal oscillator Power down mode ORDERING INFORMATION Part number Package Operating temperature Device Status XR68C92CP 40-Lead PDIP 0 C to + 70 C Active. See the XR68C92CV for new designs. XR68C92CJ 44-Lead PLCC 0 C to + 70 C Active XR68C92CV 44-Lead LQFP 0 C to + 70 C Active XR68C92IP 40-Lead PDIP -40 C to + 85 C Active. See the XR68C92IV for new designs. XR68C92IJ 44-Lead PLCC -40 C to + 85 C Active XR68C92IV 44-Lead LQFP -40 C to + 85 C Active XR68C192CJ 44-Lead PLCC 0 C to + 70 C Active XR68C192CV 44-Lead LQFP 0 C to + 70 C Active XR68C192IJ 44-Lead PLCC -40 C to + 85 C Active XR68C192IV 44-Lead LQFP -40 C to + 85 C Active Rev. 1.33 EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 (510) 668-7000 FAX (510) 668-7017 D1 18 6 A2 D3 19 5 IP1 D5 20 4 A1 21 D7 3 IP3 GND 22 2 A0 23 1 N.C. N.C. -INT 24 44 VCC D6 25 43 IP4 26 D4 42 IP5 D2 27 41 -IACK 28 40 D0 IP2XR68C92/192 Package Description 44 Pin LQFP Package 40 Pin DIP Package A0 1 40 VCC IP4 IP3 2 39 A1 3 38 IP5 IP1 4 37 -IACK A3 1 33 -CS IP0 2 32 -RESET A2 5 36 IP2 R/-W 3 31 XTAL2 A3 6 35 -CS XTAL1 -DTACK 4 30 IP0 7 34 -RESET RXB 5 29 RXA R/-W 8 33 XTAL2 XR68C92 TXB 6 28 TXA XR68C192 XTAL1 -DTACK 9 32 OP1 7 27 OP0 RXB 10 31 RXA OP2 OP3 8 26 TXB 11 30 TXA OP5 9 25 OP4 OP0 OP1 12 29 OP7 10 24 OP6 OP3 13 28 OP2 N.C. 11 23 N.C. OP5 14 27 OP4 OP7 15 26 OP6 D1 16 25 D0 D3 17 24 D2 D5 18 23 D4 19 D6 D7 22 GND 20 21 -INT Rev. 1.33 2 XR68C92 XR68C192 44 D1 12 A2 D3 13 43 IP1 D5 14 42 A1 D7 15 41 IP3 GND 16 40 A0 GND 17 39 VCC 18 38 VCC -INT 19 37 IP4 D6 20 36 IP5 D4 35 D2 21 -IACK 34 IP2 D0 22