Motorola DSP56012 ユーザーズマニュアル
Parallel Host Interface
Host Interface (HI)
MOTOROLA
DSP56012 User’s Manual
4-23
Figure 4-10 Host Processor Programming Model–Host Side
Interrupt Vector Number
($0F)
0 0 0 0 0 0 0 0
RXH
Receive High Byte
RXM
Receive Middle Byte
Not Used
TXH
Transmit High Byte
TXM
Transmit Middle Byte
Note:
1.
The numbers in parentheses are reset initialization values.
0
0
Interrupt Mode (DMA Off)
0
1
24-Bit DMA Mode
1
0
GPIO-Bit DMA Mode
1
1
8-Bit DMA Mode
Host Vector
($17)
Status
Flags
RXL
Receive Low Byte
TXL
Transmit Low Byte
Receive Byte Registers (RXH:RXM:RXL)
(Read Only)
Transmit Byte Registers (TXH:TXM:TXL)
(Write Only)
$2
Interrupt Status Register (ISR)
(Read Only)
(Read Only)
HOREQ
(0)
0
HF3
(0)
HF2
(0)
TRDY
(1)
TXDE
(1)
RXDF
(0)
7
0
31
24 23
0
7
0 7
0
0 7
0 7
8 7
16 15
$7
$6
$5
$4
$3
Interrupt Vector Register (IVR)
(Read/Write)
(Read/Write)
7
0
$1
Command Vector Register (CVR)
(Read/Write)
(Read/Write)
HC
(0)
0
7
0
DMA
(0)
Flags
Modes
$0
Interrupt Control Register (ICR)
(Read/Write)
(Read/Write)
INIT
(0)
0
HF1
(0)
HF0
(0)
TREQ
(1)
RREQ
(0)
7
0
HM1
(0)
HM0
(0)
5
AA0319k