Freescale Semiconductor DSP56366 - Manual (Page 337)

Programming Sheets
DSP56366 24-Bit Digital Signal Processor User Manual, Rev. 4
Freescale Semiconductor D-29
Figure D-14. SHI Host Control/Status Register
HBUSY
I 2
C SPI
Mode
0
S
top event
Not Busy
1
S
HI de
tects
Start
SS
detected
(Sl
av
e)
-O
R-
HT
X
/IOSR n
ot
empty (master
)
SHI
*
* =
Reserved, write as 0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
HRQE
0
HFIF0
H
M1
HM0
H
I 2
CH
E
N
SHI Contr
o
l/St
at
us
X:
$FFF
F91
Rese
t =
$0
0820
0
R
egister (HCSR)
19
18
17
16
23
22
21
20
HRF
F
HROE
HBU
S
Y
*
0
HM
ST
H
T
IE
HBIE
HIDL
E
H
R
Q
E
1
HTDE
HTUE
HRIE
1
HR
IE
0
HRNE
HB
ER
H
E
N
D
escript
ion
0
S
HI disabled
1
S
HI ena
bled
HI
2
C
R
esu
lt
0
SPI mode
1I
2
C mode
HM1
H
M0
Des
criptio
n
0
0
8 bit
dat
a
0
1
16
bit da
ta
1
0
24
bit da
ta
11
R
es
er
ve
d
HFIF
O
D
esc
rip
tio
n
0
1 l
ev
el
FIFO
11
0
le
ve
l
H
M
S
T
Result
0S
la
ve
m
o
de
1M
a
st
er
mode
H
R
QE1
H
RQE0
HREQ
P
in
Operati
o
n
0
0
High impeda
nce
0
1
A
sserted if IOSR rea
dy to
receive new
word
1
0
A
sserted if IOSR rea
dy to
transmit n
ew word
11
I 2
C: Asser
ted if IOSR
ready to tr
ansmit or
receive
S
P
I: Asser
ted if OISR
ready
to
tr
ansm
it and receive
H
ID
L
E
D
escrip
tion
0
B
us busy
1
S
top
even
t
H
B
IE
Des
criptio
n
0
B
us Erro
r Inter
rupt
disable
d
1
B
us Erro
r Inter
rupt en
abled
HTIE
Descrip
tio
n
0
T
ransmit I
nterr
upt disabled
1
T
ransmit I
nterrupt activated
H
o
st Trans
m
it U
n
d
er
ru
n
Error
R
ead Only Status Bit
H
o
st
Trans
fer Dat
a Emp
ty
R
ead Only Status Bit
H
o
st Re
ceive FIF
O
No
t Emp
ty
R
ead Only Status Bit
H
o
st
Receive F
IFO Fu
ll
R
ead Only Status Bit
H
o
st
Receive Overrun
Err
o
r
R
ead Only Status Bit
*
0
HBER
I 2
C SPI
Mode
0
N
o err
or
N
o er
ror
1
N
o acknowledge
SS
asser
ted
HRIE1
HRIE0
Int
errupt
Con
d
it
ion
00
1 0 1
disa
bled
Receive
FIFO not e
m
pty
Receive
Overr
un Err
or
re
se
rv
ed
Rec
ei
ve
FIFO
ful
l
Receive
Overr
un Err
or
n.a. HR
NE=1 & HROE=0
HR
OE=1
n.a. HR
FF
=1 & H
R
OE=0
HR
OE=1
0 1 1
*
0
HCK
FR
Application: Date:
Programmer:
HCKFR
D
esc
ri
ption
0
I2C S
lave
Clock
Free
ze
Disab
led
1
I2C S
lave
Clock
Free
ze
E
nable
d
Sheet 3 of 3