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Reg
Num Mnemonic
HPCR
0
HGEN
Host GPIO Enable
1
HA8EN
Host Address Line 8
Enable
2
HA9EN
Host Address Line 9
Enable
3
HCSEN
Host Chip Select Enable
4
HREN
Host Request Enable
5
HAEN
Host Acknowledge
Enable
6
HEN
Host Enable
8
HROD
Host Request Open Drain
9
HDSP
Host Data Strobe Polarity
10
HASP
Host Address Strobe
Polarity
11
HMUX
Host Multiplxed Bus
12
HDDS
Host Dual Data Strobe
13
HCSP
Host Chip Select Polarity
14
HRP
Host Request polarity
15
HAP
Host Acknowledge
Polarity
HSR
0
HRDF
Host Receive Data Full
1
HTDE
Host Transmit Data
Empty
2
HCP
Host Command Pending
3
HF0
Host Flag0
4
HF1
Host Flag1
7
DMA
DMA Status
HBAR 7-0
BA10-BA3 Host base Address
Register
MOTOROLA
Table D-4 HDI08 Programming Model
Bit
Name
Val
0
GPIO pin disconnected
1
GPIO pins active
0
HA8/HA1 = GPIO
1
HA8/HA1 = HA8/HA1
0
HA9/HA2 = GPIO
1
HA9/HA2 = HA9/HA2
0
HCS/HA10 = GPIO
1
HCS/HA10 = HCS/HA10
0
HOREQ/HTRQ = GPIO
HACK/HRRQ=GPIO
1
HOREQ/HTRQ=HOREQ/HTRQ
HACK/HRRQ=HACK/HRRQ
0
HACK/HRRQ = GPIO
1
HACK/HRRQ= HACK
0
Host Port=GPIO
1
Host Port Active
0
HOREQ/HTRQ/HRRQ=driven
HOREQ/HTRQ/HRRQ=open
1
drain
0
HDS/HRD/HWR active low
1
HDS/HRD/HWR active high
0
HAS active low
1
HAS active high
0
Seprate address and data lines
1
Multiplexed address/data
0
Single Data Strobe (HDS)
1
Double Data Strobe (HWR,
HRD)
0
HCS active low
1
HCSactive high
0
HOREQ/HTRQ/HRRQ
active low
1
HOREQ/HTRQ/HRRQ
active high
0
HACK active low
1
HACK active high
0
no receive data to be read
1
receive data register is full
1
transmit data register empty
0
transmit data reg. not empty
0
no host command pending
1
host command pending
0
DMA mode disabled
1
DMA mode enabled
DSP56367
Programmer's Reference
Comments
Function
this bit is treated as 1 if
HMUX=0
this bit is treated as 0 if
HEN=0
this bit is treated as 1 if
HMUX=0
this bit is treated as 0 if
HEN=0
this bit is treated as 0 if
HEN=0
this bit is treated as 0 if
HEN=0
this bit is ignored if
HDRQ=1
this bit is treated as 0 if
HREN=0
this bit is treated as 0 if
HEN=0
this bit is ignored if
HEN=0
this bit is ignored if
HEN=0
this bit is ignored if
HEN=0
this bit is ignored if
HEN=0
this bit is ignored if
HEN=0
this bit is ignored if
HEN=0
this bit is ignored if
HEN=0
this bit is ignored if
HEN=0
Reset Type
HW /
IR
ST
SW
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
-
-
0
0
0
1
1
1
0
0
0
0
-
-
0
-
-
0
-
-
$80
D-13
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