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Application:
HOST
HOST – HOST PROCESSOR SIDE
Interrupt Status Register (ISR)
$2 Read/Write
Reset = $03
C - 32
DSP56156 Host Programming Sheet
Receive Data Register Full
0 = Wait
Transmit Data Register Empty
0 = Wait
Transmitter Ready
0 = Data in HI 1 = Data Not in HI
Host Flags
Read Only
DMA Status
0 = ∏ DMA Disabled
Host Request
0 = ∏ HREQ Deasserted1 = ∏ HREQ Asserted
Figure C-28 Interrupt Status Register (ISR)
PROGRAMMING SHEETS
Date:
Programmer:
1 = Read
1 = Write
1 = ∏ DMA Enabled
7
HREQ
*
Sheet 4 of 5
6
5
4
3
2
1
*
DMA
HF3
HF2
TRDY
TXDE RXDF
0
= Reserved, Program as zero
MOTOROLA
0
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