Freescale Semiconductor DSP56366 - Manual (Page 321)

Host Interface—Quick Reference
DSP56366 24-Bit Digital Signal Processor User Manual, Rev. 4
Freescale Semiconductor D-13
HPCR 0 HGEN Host GPIO Enable 0
1
GPIO pin disconnected
GPIO pins active
0 - -
1 HA8EN Host Address Line 8
Enable 0 HA8/HA1 = GPIO this bit is treated
as 1 if HMUX=0
this bit is treated
as 0 if HEN=0
0 - -
1 HA8/HA1 = HA8/HA1
2 HA9EN Host Address Line 9
Enable 0 HA9/HA2 = GPIO this bit is treated
as 1 if HMUX=0
this bit is treated
as 0 if HEN=0
0 - -
1 HA9/HA2 = HA9/HA2
3 HCSEN Host Chip Select Enable 0
1
HCS/HA10 = GPIO
HCS/HA10 = HCS/HA10
this bit is treated
as 0 if HEN=0 0 - -
4 HREN Host Request Enable 0 HOREQ/HTRQ = GPIO
HACK/HRRQ=GPIO
this bit is treated
as 0 if HEN=0 0 - -
1 HOREQ/HTRQ=HOREQ/HTRQ
HACK/HRRQ=HACK/HRRQ
5 HAEN Host Acknowledge Enable 0 HACK/HRRQ = GPIO 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
0 - -
1 HACK/HRRQ= HACK
6 HEN Host Enable 0
1
Host Port=GPIO
Host Port Active
0 - -
8 HROD Host Request Open Drain 0
1
HOREQ/HTRQ/HRRQ=driven
HOREQ/HTRQ/HRRQ=open drain
this bit is ignored if
HEN=0 0 - -
9 HDSP Host Data Strobe Polarity 0
1
HDS/HRD/HWR active low
HDS/HRD/HWR active high
this bit is ignored if
HEN=0 0 - -
10 HASP Host Address Strobe
Polarity 0
1
HAS active low
HAS active high
this bit is ignored if
HEN=0 0 - -
11 HMUX Host Multiplxed Bus 0
1
Separate address and data lines
Multiplexed address/data
this bit is ignored if
HEN=0 0 - -
12 HDDS Host Dual Data Strobe 0
1
Single Data Strobe (HDS)
Double Data Strobe (HWR, HRD)
this bit is ignored if
HEN=0 0 - -
13 HCSP Host Chip Select Polarity 0
1
HCS active low
HCS active high
this bit is ignored if
HEN=0 0 - -
14 HRP Host Request polarity 0
1
HOREQ/HTRQ/HRRQ active low
HOREQ/HTRQ/HRRQ active high
this bit is ignored if
HEN=0 0 - -
15 HAP Host Acknowledge Polarity 0
1
HACK active low
HACK active high
this bit is ignored if
HEN=0 0 - -
Table D-4. HDI08 Programming Model (continued)
Reg
Bit
Comments
Reset Type
Num Mnemonic Name Val Function
HW /
SW
IR ST