DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 130

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Host Interface (HI08)
6-30
HSR
HBAR
HRX
HTX
HDR
HDRR
Register
Reg
ICR
#
0
1
2
3
4
5
7
7–0
23–
23–
16–
16–
No.
Bit
0
1
2
3
4
0
0
0
0
HLEND
HDRQ
RREQ
TREQ
BA[10–3
HF0
HF1
INIT
D[16–0]
DR[16–
Table 6-19. HI08 Programming Model, DSP Side (Continued)
HRDF
HTDE
HCP
HF0
HF1
Bit
0]
]
Table 6-20. HI08 Programming Model: Host Side
Receive Request Enable
Transmit Request Enable
Double Host Request
Host Flag 0
Host Flag 1
Host Little Endian
Initialize
Host Receive
Data Full
Host Transmit
Data Empty
Host Command
Pending
Host Flag 0
Host Flag 1
Host Base
Address
Register
DSP Receive
Data Register
DSP Transmit
Data Register
GPIO signal
Data
GPIO signal
Direction
Name
Name
DSP56303 User’s Manual, Rev. 2
Value
Bit
0
1
1
0
0
1
0
1
Bit
no receive data to be read
Receive Data Register is full
The Transmit Data Register is
empty.
The Transmit Data Register is not
empty.
no host command pending
host command pending
Input
Output
Value
1
1
1
1
0
0
0
0
1
HRRQ interrupt disabled
HRRQ interrupt enabled
HTRQ interrupt disabled
HTRQ interrupt enabled
HREQ/HTRQ = HREQ,
HACK/HRRQ = HACK
HREQ/HTRQ = HTRQ,
HACK/HRRQ = HRRQ
Big Endian order
Little Endian order
Reset data paths according to
TREQ and RREQ
Function
Function
empt
empt
$000
$000
HW/
$80
SW
0
1
0
0
0
0
0
y
y
Freescale Semiconductor
HW/
SW
Reset Type
0
0
0
0
0
0
0
Indivi-
dual
Reset Type
—
—
—
—
0
1
0
Indi
vi-d
ual
—
—
—
—
—
—
—
STOP
STOP
—
—
—
—
0
1
0
—
—
—
—
—
—
—