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ABSTRACT This application note shows how a SC16C752 or SC16C752B or a SC16C2550 or SC16C2550B can be connected to an ISA bus. This application note is also applicable to all Philips SC16C products.

AN10249 SC16C752 / SC16C752B / SC16C2550 / SC16C2550B ISA bus hardware interface example

INTEGRATED CIRCUITS
ABSTRACT This application note shows how a SC16C752 (or SC16C752B) or a SC16C2550 (or SC16C2550B) can be connected to an ISA bus. This application note is also applicable to all Philips SC16C products.
AN10249 SC16C752 / SC16C752B / SC16C2550 / SC16C2550B ISA bus hardware interface example
Author: Dong Nguyen Supersedes data of 2003 Sep 04 2004 Jun 25
Philips Semiconductors
Application note
SC16C752 / SC16C752B / SC16C2550 / SC16C2550B ISA bus hardware interface example
AN10249
2004 Jun 25
Philips Semiconductors
U4 1 2 A 3 B C COM2 COM1 4 6 5 3 2 74LS138 74LS00 U3B 74LS08 1 U5A 6 4 G1 5 G2A G2B Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 15 14 13 12 11 10 9 7
/ IOCK SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0 / IORDY AEN SA19 SA18 SA17 SA16 SA15 SA14 SA13 SA12 SA11 SA10 SA9 SA8 SA7 SA6 SA5 SA4 SA3 SA2 SA1 SA0
SA9 SA8 SA7 SA6 SA5 SA4 SA3
SA2 SA1 SA0
16C752
SA2.0
ISA-A
SC16C752 / SC16C752B / SC16C2550 / SC16C2550B ISA bus hardware interface example
Figure 1.
VCC -12V +5V
-RIA -CDA SA2.0 -DSRA -CTSA -RTSA D7.0 -DTRA TXA INTB RXA INTA -IOW -IOR -DSRB -CTSB -RTSB -DTRB RESET TXB -CSB RXB -CSA
-RIA -CDA -DSRA -CTSA -RTSA -DTRA TXA RXA
-DSRB -CTSB -RTSB -DTRB TXB RXB
GND RST +5V IRQ9 -5V DRQ2 -12V OWS +12V GND / SMEMW / SMEMR / IOW / IOR / DACK3 DRQ3 / DACK1 DRQ1 / REF CLK IRQ7 IRQ6 IRQ5 IRQ4 IRQ3 / DACK2 T / C BALE +5V OSC GND
TRANSCEIVER
AN10249
ISA-B
Application note
SD00717
GND 17
VCC 42
13 XTAL1 14 XTAL2 32 -OP2A 9 -OP2B
2004 Jun 25
+5V C2 0.01uF D7.0 U7 0.1uF C3 + C1 10uF 41 -RIA 40 -CDA 39 -DSRA 38 -CTSA -RIA -CDA -DSRA -CTSA -RIA -CDA -DSRA -CTSA -RTSA -DTRA TXA RXA TXB RXB -DTRB -RTSB -DTRB -RTSB -CTSB -DSRB -RTSA -DTRA TXA RXA TXB RXB 33 -RTSA 34 -DTRA 7 TXA 5 RXA SA2.0 SA2 SA1 SA0 -IOR -IOR -IOW 35 -DTRB 22 -RTSB -IOW -CSA -CSB 10 11 -CSA -CSB 15 19 26 27 A2 28 A1 A0 D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 44 45 46 47 48 1 2 3
Philips Semiconductors
SA2.0
SC16C752
-CSA -CSB
RESET 43 31 6 18 -TXRDYA -RXRDYA -TXRDYB -RXRDYB
RESET
29 30 INTB 36 INTA RESET
23 -CTSB 20 -DSRB 16 -CDB 21 -RIB
-CTSB -DSRB -CDB -RIB
JP3 JP4
SC16C752 / SC16C752B / SC16C2550 / SC16C2550B ISA bus hardware interface example
Figure 2.
Y1 C4 22pF INTA INTB
R1 1.5K
CRYSTAL
C5 33pF
AN10249
Application note
SD00718
SC16C752 / SC16C752B / SC16C2550 / SC16C2550B ISA bus hardware interface example
-DSRB -RTSB -CTSB -DTRB RXB TXB
16 15 14 13 12 11 10 09 VCC DO1 DI1 DO2 DI2 DO3 DI3 GND DSR RX RTS TX CTS DTR VDD RX1 TX1 RX2 TX2 RX3 TX3 VSS
C8 + C6 10uF 0.01uF
0.1uF
MC145406D -12V
JP5 C15 0.01uF 0.1uF C16 C18 0.1uF + C13 10uF C19 0.01uF C20 0.1uF + C14 10uF
Crystal can GND
+ C12 C17 10uF 0.01uF
2004 Jun 25
+12V +5V U10 P1 +12V VCC DO1 DI1 DO2 DI2 DO3 DI3 GND R3 R4 R5 1K 1K 1K CONNECTOR DB9 -12V MC145406D -12V VDD RX1 TX1 RX2 TX2 RX3 TX3 VSS VCC DO1 DI1 DO2 DI2 DO3 DI3 GND 1 2 3 4 5 6 7 8 CD DSR RX RTS TX CTS DTR RI VDD RX1 TX1 RX2 TX2 RX3 TX3 VSS R2 1M 1 6 2 7 3 8 4 9 5 16 15 14 13 12 11 10 09 1 2 3 4 5 6 7 8 +12V P2 +12V -12V C7 C9 10uF C10 0.01uF C11 0.1uF
Philips Semiconductors
-CDA -RIA
-DSRA -RTSA -CTSA -DTRA RXA TXA
16 15 -RTSA 14 13 12 RXA 11 TXA 10 09
MC145406D
Figure 3.
AN10249
Application note
SD00719
Philips Semiconductors
Application note
SC16C752 / SC16C752B / SC16C2550 / SC16C2550B ISA bus hardware interface example
AN10249
REVISION HISTORY
Definitions
Short-form specification - The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition - Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information - Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Contact information
For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Document order number:
Philips Semiconductors
2004 Jun 25 6