SC26C92 Philips Semiconductors, SC26C92 Datasheet
SC26C92
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SC26C92 Summary of contents
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... SC26C92 Dual universal asynchronous receiver/transmitter (DUART) Product specification Supersedes data of 1998 Nov 09 IC19 Data Handbook hilips Semiconductors INTEGRATED CIRCUITS 2000 Jan 31 ...
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... Philips Semiconductors Dual universal asynchronous receiver/transmitter (DUART) DESCRIPTION The SC26C92 is a pin and function replacement for the SCC2692 and SCN2681 with added features and deeper FIFOs. Its configuration on power up is that of the 2692. Its differences from the 2692 are: 8 character receiver, 8 character transmit FIFOs, ...
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... D5 36 IP5 IP4 16 GND GND INTRN IP3 IP1 Figure 1. Pin Configurations 3 Product specification SC26C92 PLCC TOP VIEW PIN/FUNCTION PIN/FUNCTION INTRN 3 IP3 25 D6 ...
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... WATCH DOG TIMER RECEIVE SHIFT REGISTER MRA0 CRA SRA CHANNEL B (AS ABOVE) INPUT PORT CHANGE OF STATE DETECTORS (4) IPCR ACR OUTPUT PORT FUNCTION SELECT LOGIC OPCR OPR Figure 2. Block Diagram 4 Product specification SC26C92 TxDA RxDA TxDB RxDB 7 IP0-IP6 8 OP0-OP7 SD00153 ...
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... Power Supply: +5V supply input. CC GND X I Ground 2000 Jan 31 NAME AND FUNCTION NAME AND FUNCTION pull-up device supplying current. pull-up device supplying current. pull-up device supplying current. pull-up device supplying current. 5 Product specification SC26C92 pull-up device CC ...
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... CMOS input levels CMOS input levels -0.2V and Product specification SC26C92 RATING UNIT Note 4 C -65 to +150 C -0.5 to +7 2.8 W 2 mW/ C LIMITS Min ...
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... RWD 7. Minimum frequencies are not tested but are guaranteed by design. Crystal frequencies MHz. 8. Clocks for 1X mode should be symmetrical. 2000 Jan 31 PARAMETER Product specification SC26C92 LIMITS 3 Min Typ Max UNIT 200 ns 10 ...
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... Philips Semiconductors Dual universal asynchronous receiver/transmitter (DUART) Block Diagram The SC26C92 DUART consists of the following eight major sections: data bus buffer, operation control, interrupt control, timing, communications Channels A and B, input port and output port. Refer to the Block Diagram. Data Bus Buffer The data bus buffer provides the interface between the external and internal data buses ...
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... OPERATION Transmitter The SC26C92 is conditioned to transmit data when the transmitter is enabled through the command register. The SC26C92 indicates to the CPU that it is ready to accept a character by setting the TxRDY bit in the status register. This condition can be programmed to generate an interrupt request at OP0, OP1 and INTRN ...
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... See further description in the MR 1 and MR2 register descriptions. Receiver The SC26C92 is conditioned to receive data when enabled through the command register. The receiver looks for a High-to-Low (mark-to-space) transition of the start bit on the RxD input pin ...
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... The timeout mode disables the regular START/STOP Counter commands and puts the C/T into counter mode under the control of the received data stream. Each time a received character is transferred from the shift register to the RxFIFO, the C/T is stopped after 1 C/T clock, reloaded with 11 Product specification SC26C92 ...
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... Commands”. Each time the MR registers are accessed the MR pointer increments, stopping at MR2. It remains pointing to MR2 until set via the miscellaneous commands of the command register. The pointer is set reset for compatibility with previous Philips Semiconductors UART software. 12 Product specification SC26C92 ...
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... Philips Semiconductors Dual universal asynchronous receiver/transmitter (DUART) Mode, command, clock select, and status registers are duplicated for each channel to provide total independent operation and control. Refer to Table 2 for register bit descriptions. Table 1. SC26C92 Register Addressing ...
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... Yes 1 = Yes 2 = 0.688 3 = 0.750 BIT 5 BIT 4 BIT 3 TRANSMITTER CLOCK SELECT BIT 5 BIT 4 BIT 3 DISABLE Tx ENABLE Yes 14 Product specification SC26C92 BIT 2 BIT 1 BIT 0 STOP BIT LENGTH 0.813 8 = 1.563 C = 1.813 5 = 0.875 9 = 1.625 D = 1.875 6 = 0.938 A = 1.688 E = 1.938 7 = 1.000 B = 1.750 F = 2.000 BIT 2 ...
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... Yes BIT 5 BIT 4 BIT 3 RxRDY/ COUNTER TxRDYB FFULLB READY INT INT INT 0 = Off 0 = Off 0 = Off Product specification SC26C92 BIT 2 BIT 1 BIT 0 TxRDY FFULL RxRDY Yes 1 = Yes 1 = Yes BIT 2 BIT 1 BIT 0 OP3 OP2 00 = OPR[ TxCA(16X TxCA(1X) ...
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... A/D bit. MR1A[1:0] – Channel A Bits Per Character Select This field selects the number of data bits per character to be transmitted and received. The character length does not include the start, parity, and stop bits. 16 Product specification SC26C92 BIT 2 BIT 1 BIT 0 C/T[10] C/T[9] C/T[8] ...
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... If an external 1X clock is used for the transmitter, MR2A[ selects one stop bit and MR2A[ selects two stop bits to be transmitted. MR0B – Channel B Mode Register 0 MR0B is accessed when the Channel B MR pointer points to MR1. The pointer is set to MR0 by RESET ‘set pointer’ command 17 Product specification SC26C92 ...
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... Timer Timer Timer IP4-16X IP4-16X IP4-1X IP4-1X 18 Product specification SC26C92 ACR[ ACR[ IP3-16X IP3-16X IP3-1X IP3-1X ACR[ ACR[ IP6-16X IP6-16X IP6-1X IP6-1X ACR[ ACR[ IP5-16X IP5-16X IP5-1X IP5-1X MR0[ (Extended Mode II) ACR[ ACR[ 4,800 ...
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... However break begins in the middle of a character, it must persist until at least the end of the next character time in order for detected. This bit is reset by command 4 (0100) written to the command register or by receiver reset. 19 Product specification SC26C92 . ...
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... The 1X clock for the Channel A transmitter, which is the clock that shifts the transmitted data. If data is not being transmitted, a free running 1X clock is output. 11 The 1X clock for the Channel A receiver, which is the clock that samples the received data. If data is not being received, a free running 1X clock is output. 20 Product specification SC26C92 ...
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... ISR – the true status will be provided regardless of the contents of the IMR. The contents of this register are initialized to H‘00’ when the DUART is reset. 21 Product specification SC26C92 CLOCK SOURCE External (IP2) TxCA – 1X clock of Channel A transmitter TxCB – ...
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... However, note that a subsequent start counter command will cause the counter to begin a new count cycle using the values in CTPU and CTPL. When the C/T clock divided selected, the maximum divisor becomes 1,048,575. 22 Product specification SC26C92 ...
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... OUTPUT PINS 2000 Jan 31 t RES SD00133 Figure 3. Reset Timing RWD NOT VALID FLOAT VALID t RWD VALID Figure 4. Bus Timing OLD DATA Figure 5. Port Timing 23 Product specification SC26C92 SD00087 NEW DATA SD00135 ...
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... Figure 6. Interrupt Timing NOTE: RESISTOR REQUIRED FOR TTL INPUT. CLK t CLK t CTC t Rx *NOTE: X2 MUST BE LEFT OPEN SC26C92 X1 2pF 50k to 100k 4pF X2 3.6864MHz Figure 7. Clock Timing 24 Product specification SC26C92 V +0. +0. SD00136 +5V 470 X1 X2* TO UART CIRCUIT SD00697 ...
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... BIT TIME ( CLOCKS) t TXD t TCS Figure 8. Transmitter External Clocks t t RXS RXH Figure 9. Receiver External Clock D2 D3 BREAK D9 START D10 STOP BREAK BREAK Figure 10. Transmitter Timing 25 Product specification SC26C92 SD00138 SD00139 D4 D6 D11 WILL D12 NOT BE WRITTEN TO THE TxFIFO OPR( SD00155 ...
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... BIT 9 BIT MR1( ADD#2 BIT 9 BIT ADD#1 STATUS DATA D0 Figure 12. Wake-Up Mode 26 Product specification SC26C92 D11 D12 D13 D12, D13 WILL BE LOST DUE TO RECEIVER DISABLE. STATUS DATA STATUS DATA D2 D3 D10 RESET BY COMMAND SD00156 BIT 9 ADD#2 1 BIT 9 BIT 9 ...
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... Philips Semiconductors Dual universal asynchronous receiver/transmitter (DUART) 2.7K INTRN 50pF + 2.4mA 400 A V D0–D7 TxDA/B OP0–OP7 150pF Figure 13. Test Conditions on Outputs 2000 Jan 31 + SD00157 27 Product specification SC26C92 ...
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... Philips Semiconductors Dual universal asynchronous receiver/transmitter (DUART) DIP40: plastic dual in-line package; 40 leads (600 mil) 2000 Jan 31 28 Product specification SC26C92 SOT129-1 ...
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... Philips Semiconductors Dual universal asynchronous receiver/transmitter (DUART) PLCC44: plastic leaded chip carrier; 44 leads 2000 Jan 31 29 Product specification SC26C92 SOT187-2 ...
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... Philips Semiconductors Dual universal asynchronous receiver/transmitter (DUART) QFP44: plastic quad flat package; 44 leads (lead length 1.3 mm); body 1.75 mm 2000 Jan 31 30 Product specification SC26C92 SOT307-2 ...
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... Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 hilips Semiconductors 2000 Jan 31 [1] Copyright Philips Electronics North America Corporation 2000 Document order number: 31 Product specification SC26C92 All rights reserved. Printed in U.S.A. Date of release: 01-00 9397 750 06829 ...