Interrupt Control And Command Vector Registers - Motorola DSP56303 User Manual

Programming Sheets
Application:
HOST
Receive Request Enable
DMA Off
DMA On
Transmit Request Enable
DMA Off
DMA On
HDRQ HREQ/HTRQ
0
1
Host Flags
Write Only
Host Little Endian
Initialize (Write Only)
0 = No Action
Host Vector
Contains Host Command Interrupt Address ÷ 2
Host Command
Handshakes Executing Host Command Interrupts
Contains the host command interrupt address
Figure B-13. Interrupt Control and Command Vector Registers
B-24
Host Side
0 = Interrupts Disabled
0 = Host DSP
0 = Interrupts Disabled
0 = DSP Host
HACK/HRRQ
HREQ HACK
HTRQ HRRQ
1 = Initialize DMA
Interrupt Control Register (ICR)
Reset = $00
Command Vector Register (CVR)
Reset = $32
DSP56303 User's Manual
1 = Interrupts Enabled
1 = DSP Host
1 = Interrupts Enabled
1 = Host DSP
7 6
*
INIT HLEND
0
Host Address: $0 Read/Write
7 6 5 4
HC7 HC6 HC5 HC4
Host Address: $1 Read/Write
Date:
Programmer:
Sheet 4 of 5
5 4 3 2 1
HF1 HF0 HDRQ TREQ RREQ
3 2 1 0
HC3 HC2 HC1 HC0
*
= Reserved, Program as 0
0