Interrupt Vector Register (Ivr); Interrupt Vector And Host Transmit Data Registers - Motorola DSP56303 User Manual

Programming Sheets
Date:
Application:
Programmer:
Sheet 5 of 5
HOST
Host Side
7 6 5 4 3 2 1 0
IV7 IV6 IV5 IV4 IV3 IV2 IV1 IV0
Contains the interrupt vector or number

Interrupt Vector Register (IVR)

Host Address: $3 Read/Write
Reset = $0F
Host Transmit Data (usually loaded by program)
7 0 7 0 7 0 7 0
Transmit Low Byte Transmit Middle Byte Transmit High Byte Not Used
0 0 0 0 0 0 0 0
$7 $6 $5 $4
Transmit Byte Registers
Host Addresses: $7, $6, $5, $4 Write Only
Reset = $00
Figure B-14. Interrupt Vector and Host Transmit Data Registers
B-25
Programming Reference