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Programmer's Reference
Application:
HOST
(HDI08)
Figure D-7 Host Control and Status Registers
D-22
Host Receive Interrupt Enable
0 = Disable
1 = Enable
if HRDF = 1
Host Transmit Interrupt Enable
0 = Disable
1 = Enable
if HTDE = 1
Host Command Interrupt Enable
0 = Disable
1 = Enable
if HCP = 1
Host Flag 2
Host Flag 3
Host DMA Control Bits
See Table 6-5 in Section 6
Host Control Register (HCR)
X:$FFFFC2 Read /Write
Reset = $0
DSP Side
Host Receive Data Full
0 = Wait
1 = Read
Host Transmit Data Empty
0 = Wait
1 = Write
Host Command Pending
0 = Wait
1 = Ready
Host Flags
Read Only
DMA status
0 = DMA Mode Disabled
1 = DMA Mode Enabled
Host Status Register (HSR)
X:$FFFFC3
Reset = $2
DSP56367
Date:
Programmer:
7
15
8
6
5
4
*
*
HDM2
HDM1
HDM0
HF3
0
0
*
= Reserved, Program as 0
7
6
5
4
8
15
*
*
*
*
HF1
DMA
0
0
0
0
*
= Reserved, Program as 0
Sheet 2 of 6
3
2
1
0
HF2
HCIE
HTIE
HRIE
3
2
1
0
HF0
HCP
HTDE
HRDF
MOTOROLA
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