DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 265

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Freescale Semiconductor
Host Vector
Host Command
Contains the host command interrupt address
Contains Host Command Interrupt Address ÷ 2
Handshakes Executing Host Command Interrupts
Application:
HOST
Receive Request Enable
Host Little Endian
Initialize (Write Only)
Host Flags
Transmit Request Enable
Write Only
DMA Off
DMA On
DMA Off
DMA On
0 = No Action
HDRQ
Figure B-12. Interrupt Control and Command Vector Registers
0
1
HREQ/HTRQ
HREQ
HTRQ
0 = Interrupts Disabled
0 = Host → DSP
0 = Interrupts Disabled
0 = DSP → Host
1 = Initialize DMA
HACK/HRRQ
Command Vector Register (CVR)
Interrupt Control Register (ICR)
Reset = $00
Reset = $32
HRRQ
HACK
DSP56303 User’s Manual, Rev. 2
Host Side
1 = Interrupts Enabled
1 = DSP → Host
1 = Interrupts Enabled
1 = Host → DSP
HC7
7
HC6
6
INIT
7
HC5
5
*
6
0
HC4
4
Host Address: $0 Read/Write
HLEND
Host Address: $1 Read/Write
5
*
HC3
3
= Reserved, Program as 0
Date:
Programmer:
HF1
4
HC2
2
HF0
3
HC1
1
HDRQ
2
Programming Sheets
HC0
0
TREQ
Sheet 4 of 5
1
RREQ
0
B-21