Dsp side hi, Programming reference – Motorola DSP56012 User Manual
Page 252
B-20
DSP56012 User’s Manual
MOTOROLA
Programming Reference
Sheet 2 of 5
Application:
Date:
Programmer:
Host Status Register (HSR)
HTDE
HCP
HRDF
HF1
HF0
6
5
4
3
2
1
0
7
23
* = Reserved, write as 0
• • •
*
0
*
0
*
0
Host Status Register (HSR)
X:$FFE9 Read Only
Reset = $000002
Host Receive Data Full (HRDF)
0 = wait/1 = read
Host Transmit Data Empty (HTDE)
0 = wait/1 = write
Host Command Pending (HCP)
0 = wait/1 = ready
Host Flags (HFO, HF1)
read only
DMA
DMA Status (DMA)
0 = disabled/1 = enabled
15
6
5
4
3
2
1
0
10
9
8
7
14
13
12
11
19
18
17
16
23
22
21
20
Receive Middle Byte
Receive Low Byte
Receive High Byte
Host Receive Data Register (HORX)
X:$FFEB Read Only
Reset = $000000
Host Receive Data (Usually Read by Program)
Host Receive Data Register (HORX)
15
6
5
4
3
2
1
0
10
9
8
7
14
13
12
11
19
18
17
16
23
22
21
20
Receive Middle Byte
Receive Low Byte
Receive High Byte
Host Transmit Data Register (HOTX)
X:$FFEB Write Only
Reset = $000000
Host Transmit Data (Usually Loaded by Program)
Host Transmit Data Register (HOTX)
DSP Side
HI
read only