The Hytec IP-SI-8515 is a single-width Industry Pack that provides 8 serial interface lines with the following characteristics:- 

• 8 independent RS-232 UART channels

• 64 byte Transmit and Receive FIFOs

• Transmit and Receive FIFO level counters

• Programmable Tx and Rx FIFO Trigger Levels

• Automatic RTS/CTS Flow Control

• Automatic Xon/Xoff Software Flow Control with Status Indication

• Programmable Data Rate with Prescaler

• Up to 6.25 Mbps Serial Data Rate

• Single Interrupt Output for all 8 UARTs

• Global Interrupt Source for all 8 UARTs

• Simultaneous UART channel initialisation

Specifications 

Size:                             Single width Industry Pack 1.8ins x 3.9 ins
Operating temp:             0 to 45 deg C ambient
Number of channels:        8
Max. baud rate:             921.6kbps with internal clock.
Data format:                  Binary/ASCII
Input/Output levels:        RS-232 Internal clock:                14.7456MHz oscillator
Clock accuracy:             +/-100ppm (0.01%)       
Power:                          +5V @ 400mA typical

Software Drivers are available including EPICS drivers.

Operating Modes                                                                                                             

Application Registers There are a number of application specific (I/O) registers.
Interrupt Register (IP address 0) Read/write register defines the vector V7-V0, Read only interrupt source U7-U0

V0-7      Interrupt vector to be used during IACK
U0-7     Any bit which is set indicates the interrupting UART
Interrupt Source Registers 1-3 (IP address 1-3)
Indicate the source of each interrupt from UART0 to 7 . Bits 8-15 are 0.
Read only register.

Timer Control Register (IP address 4&5)
Read/write register.
CS-Clock Select S/R-Single/Retrigger SS-Start/Stop IE-Timer Interrupt Enable

Timer Counter Register (IP address 6&7)
Read/write register.
Timer counter data register.

8x Mode Register (IP address 8)
Read/write register.
Logic 0 sets 16x sampling. Logic 1 sets 8x sampling

Reserved Register (IP address 9)
Read only register.

Reset Register (IP address A).
Resets are write only
R0-7 reset UART0-7

Sleep Register (IP address B)
S0-7 set UART0-7 into sleep mode Read/write register.

 Device Revision Register (IP address C)  (UART device revision – read only)

 Device  ID Registers (IP address D)  (UART device ID – read only)

 Control Register (IP address E). (Read/write)

IRQ       Any IRQ which is set and masked on sets this status bit. Read only
IEN       Interrupt mask bit. Enables interrupt when set to a 1. Read/Write.
ENI       Enable Infra-red mode. Read/write
RST      Writing a 1 generates a reset to the UART device. WA       Setting this to a 1 enables writing to all UARTs in parallel. Read/write  

UART Channel Configuration  Registers  (Memory addresses  00-7F) Each UART has a set of 16 configuration registers at addresses 0x,1x,2x….7x as follows: 

RHR – Receive Holding Register             THR – Transmit Holding Register
DLL – Div Latch Low                             DLH – Div Latch High
IER  -  Interrupt Enable Register            ISR   -  Interrupt Status Register FCR – FIFO Control Register
LCR – Line Control Register                  MCR – Modem Control Register LSR – Line Status Register
MSR – Modem Status Register               SPR -   Scratch Pad Register
FCTR                                                   EFR -  Enhanced Function Register               
TFCNT- Transmit FIFO Counter               TFTRG – Transmit FIFO Trigger Level
RFCNT – Receive FIFO Counter               RFTRG – Receive FIFO Trigger Level
XOFF1 – Xoff Character 1                       XOFF2 – Xoff Character 2
XON1 – Xon Character 1                         XON2 – Xon Character 2

 ID PROM

The ID data byte addresses are as below:-

IP-MUXADC 8515 I/O Connector

Connector: 50 way 

Pin Allocation

     Pin                       RS-232                       

Copyright © 2002 [Hytec Electronics Ltd]. All rights reserved. Information in this document is subject to change without notice. Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.