XR16V798IQ-0B-EVB Exar Corporation, XR16V798IQ-0B-EVB Datasheet
XR16V798IQ-0B-EVB
Specifications of XR16V798IQ-0B-EVB
Related parts for XR16V798IQ-0B-EVB
XR16V798IQ-0B-EVB Summary of contents
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL JULY 2008 GENERAL DESCRIPTION 1 The XR16V798 (798 2.25V to 3.6V octal Universal Asynchronous Receiver and Transmitter (UART) with 5V tolerant serial (modem) inputs. The highly integrated device is ...
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... VCC TX1 DTR1# RTS1# RI1# CD1# DSR1# CTS1# RX1 TX0 DTR0# RTS0# RI0# CD0# DSR0# CTS0# RX0 ORDERING INFORMATION ART UMBER XR16V798IQ 100-Lead QFP XR16V798 100-QFP ACKAGE PERATING EMPERATURE -40°C to +85°C 2 REV. 1.0.1 CTS5# RX5 VCC GND TX6 DTR6# RTS6# ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 PIN DESCRIPTIONS AME IN YPE DATA BUS INTERFACE Address lines [7:0]. A0:A3 selects individual UART’s 16 configuration registers, A7:A0 20-27 I A4:A6 selects ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE AME IN YPE UART channel 1 Transmit Data or infrared transmit data. TX1 85 O UART channel 1 Receive Data or infrared receive data. ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0 AME IN YPE UART channel 4 Receive Data or infrared receive data. Normal RXD input idles RX4 57 I HIGH. The infrared pulse ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE AME IN YPE UART channel 7 Request to Send or general purpose output (active LOW). See RTS7 description of RTS0# pin. UART ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 1.0 DESCRIPTION The XR16V798 (798) integrates the functions of 8 enhanced 16550 UARTs, a general purpose 16-bit timer/ counter and an on-chip oscillator. The device configuration registers ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 2.4 INT# Ouput The INT# interrupt output changes according to the operating mode and enhanced features setup. and 3 summarize the operating behavior for the transmitter and receiver. ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 2.6 Programmable Baud Rate Generator with Fractional Divisor Each UART has its own Baud Rate Generator (BRG) with a prescaler for the transmitter and receiver. The prescaler ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE ABLE YPICAL DATA RATES WITH A Required D IVISOR FOR Output Data 16x Clock O Rate (Decimal) 400 3750 2400 625 4800 312.5 9600 156.25 ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 2.7.1 Transmit Holding Register (THR) - Write Only The transmit holding register is an 8-bit register providing a data interface to the host processor. The host writes ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 2.8 Receiver The receiver section contains an 8-bit Receive Shift Register (RSR) and 64 bytes of FIFO which includes a byte-wide Receive Holding Register (RHR). The RSR uses ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0 IGURE ECEIVER PERATION IN 16X or 8X Clock Receive Data Shift Register (RSR) 64 bytes by 11-bit wide FIFO Receive Data FIFO Receive ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE . ABLE RANSMIT AND THR and RHR Address Locations For CH0 to CH7 (16C550 Compatible) CH0 0x00 Write THR CH0 0x00 Read RHR CH1 0x10 ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 2.10 Auto RTS/DTR Hardware Flow Control Operation Automatic RTS/DTR flow control is used to prevent data overrun to the local receiver FIFO. The RTS#/DTR# output pin is ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE RTS/DTR CTS/DSR F IGURE UTO AND Local UART UARTA Receiver FIFO Trigger Reached Auto RTS Trigger Level Transmitter Auto CTS Monitor Assert RTS# to Begin ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 In the event that the receive buffer is overfilling and flow control needs to be executed, the 798 automatically sends an Xoff message (when enabled) via the ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE The infrared encoder sends out a 3/ bit wide HIGH-pulse for each “0” bit in the transmit data stream. This signal encoding reduces the on-time of ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 2.15 Sleep Mode with Auto Wake-Up The 798 supports low voltage system designs, hence, a sleep mode is included to reduce its power consumption when the chip ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 2.16 Internal Loopback Each UART channel provides an internal loopback capability for system diagnostic purposes. The internal loopback mode is enabled by setting MCR register bit-4 to logic ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 F 12. T XR16V798 R IGURE HE EGISTERS 8-bit Data Bus Interface 3.1 DEVICE CONFIGURATION REGISTER SET The device configuration registers are directly accessible from the bus. ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE Bit 7 DDRESS EAD R EGISTER [A7:A0] W RITE 0x80 R INT Source UART 7 0x81 R INT 1 UART 2 bit 1 0x82 ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 3.1.1.1 INT0 Channel Interrupt Indicator: Bit-7 Ch-7 3.1.1.2 INT1, INT2 and INT3 Interrupt Source Locator INT3, INT2 and INT1 provide a 24-bit (3 bits per channel) encoded ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 3.1.2 General Purpose 16-bit Timer/Counter [TIMERMSB, TIMELSB, TIMER, TIMECNTL XX-XX-00-00) X The 798 includes a 16-bit general purpose timer/counter. Its clock source may be selected from ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 TIMER OPERATION The following paragraphs describe the operation of the 16-bit Timer/Counter. The following conventions will be used in this discussion: ’N’ is the 16-bit value programmed ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 3.1.3 8XMODE [7:0] (default 0x00) Each bit selects 8X or 16X sampling rate for that UART channel, bit-0 is channel 0. Logic 0 (default) selects normal 16X sampling ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 3.1.7.1 DVID [7:0] (default 0x48) Device identification for the type of UART. The Device ID for the V798 is 0x48. Examples: XR16V798 = 0x48 XR16L788 = 0x28 ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 3.2 UART CHANNEL CONFIGURATION REGISTERS The first 8 registers are 16550 compatible with EXAR enhanced feature registers located on the upper 8 addresses. The 8 sets of UART ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 T 12: UART CHANNEL CONFIGURATION REGISTERS DESCRIPTION. ABLE DDRESS EG EAD A3- AME RITE ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE T 12: UART CHANNEL CONFIGURATION REGISTERS DESCRIPTION. ABLE DDRESS EG EAD A3- AME RITE TXTRG ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 IER[7]: CTS# Input Interrupt Enable (requires EFR bit-4=1) • Logic 0 = Disable the CTS# interrupt (default). • Logic 1 = Enable the CTS# interrupt. The UART ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 4.4 Interrupt Status Register (ISR) - Read Only The UART provides multiple levels of prioritized interrupts to minimize external software interaction. The Interrupt Status Register (ISR) provides the ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 ISR[7:6]: FIFO Enable Status These bits are set to a logic 0 when the FIFOs are disabled. They are set to a logic 1 when the FIFOs ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE T 14: T ABLE RANSMIT AND T FCTR FCTR FCR RIGGER ABLE Table ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 LCR[5]: TX and RX Parity Select If the parity bit is enabled, LCR BIT-5 selects the forced parity format. • LCR BIT-5 = logic 0, parity is ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 4.7 Modem Control Register (MCR) - Read/Write The MCR register is used for controlling the modem interface signals or general purpose inputs/outputs. MCR[7]: Clock Prescaler Select • Logic ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 MCR[1]: RTS# Output The RTS# pin may be used for automatic hardware flow control by enabled by EFR bit-6 and MCR bit-2=0. If the modem interface is ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE LSR[1]: Receiver Overrun Flag • Logic overrun error (default). • Logic 1 = Overrun error. A data overrun error condition occurred in the receive shift ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 MSR[1]: Delta DSR# Input Flag • Logic change on DSR# input (default). • Logic 1 = The DSR# input has changed state since the ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE MSR [3]: Transmitter Disable This bit can be used to disable the transmitter by halting the Transmit Shift Register (TSR). When this bit is set to a ’1’, ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 FCTR[4]: Infrared RX Input Logic Select • Logic 0 = Select RX input as active HIGH encoded IrDA data, normal, (default). • Logic 1 = Select RX ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE EFR[6]: Auto RTS or DTR Flow Control Enable RTS#/DTR# output may be used for hardware flow control by setting EFR bit-6 to logic 1. When Auto RTS/ DTR ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 EFR[3:0]: Software Flow Control Select Combinations of software flow control can be selected by programming these bits, as shown in below. T ABLE EFR -3 EFR -2 ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 4.19 XCHAR REGISTER, READ ONLY This register gives the status of the last sent control character (xon or xoff) and the last received control character (xon or xoff). ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 REGISTERS RESET STATE DLL Bits 7-0 = 0x01 DLM Bits 7-0 = 0x00 DLD Bits 7-0 = 0x00 RHR Bits 7-0 = 0xXX THR Bits 7-0 = ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE ABSOLUTE MAXIMUM RATINGS Power Supply Range Voltage at Any Pin Operating Temperature Storage Temperature Package Dissipation Thermal Resistance (14x20x3.0mm 100-QFP) ELECTRICAL CHARACTERISTICS DC ELECTRICAL CHARACTERISTICS ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 AC ELECTRICAL CHARACTERISTICS TA (-40 to +85 C for industrial grade package), Vcc is 2.25V to 3.6V Load ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE AC ELECTRICAL CHARACTERISTICS TA (-40 to +85 C for industrial grade package), Vcc is 2.25V to 3.6V Load where ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0 IGURE ODE NTEL ATA A0-A7 Valid Address T AS CS# IOR# T RDV D0-D7 A0-A7 Valid Address T AS CS# ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE F 17 IGURE ODE OTOROLA A0-A7 T ADS CS# T RWS R/W# T RDA D0-D7 A0-A7 T ADS CS# T RWS R/W# T ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0 IGURE ODEM NPUT UTPUT IOW # Active RTS# Change of state DTR# CD# CTS# DSR# INT IOR# RI# F 19. R ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE F 20 IGURE RANSMIT NTERRUPT IMING ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 PACKAGE DIMENSIONS 100 LEAD PLASTIC QUAD FLAT P 81 100 A2 A Seating Plane A1 SYMBOL ...
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... July 2008 Corrected description of Xon/Xoff/Special character interrupt. EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a user’ ...
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HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE REV. 1.0.1 GENERAL DESCRIPTION................................................................................................ 1 A .............................................................................................................................................. 1 PPLICATIONS F .................................................................................................................................................... 1 EATURES ............................................................................................................................................................. 1 IGURE LOCK IAGRAM .................................................................................................................................................. 2 ...
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XR16V798 HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE 3.1.2.2 TIMER [7:0] R ESERVED 3.1.2.3 TIMERCNTL [7:0] R EGISTER T 10: TIMER C C ABLE ONTROL OMMANDS TIMER OPERATION ................................................................................................................................................ ............................................................................................................................................. 25 ...