mc68181 Freescale Semiconductor, Inc, mc68181 Datasheet - Page 92

• Manufacturer Part Number: mc68181
• Description: Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

MC68181
Decoder-to-Host Packet Descriptions
B-32
Note:
t
Note:
NUMERIC VECTOR PACKET
1
00
01
10
11
t
0
Byte
Byte
Table B-29 Short Message / Tone Only Vector Packet Bit Assignments (Continued)
3
2
1
0
d
c
s
s
1.
2.
1.
2.
3.
8
1
3
11
d
c
s
s
V: = 010 for a Short Message/Tone Only Vector
WN—Word number of vector (2–87 decimal); describes the location of the vector word in the
frame
e—Set if more than 2 bit errors are detected in the word or, if after error correction, the check
character calculation fails
p—Phase on which the vector was found (0 = a, 1 = b, 2 = c, 3 = d)
d—Data bits whose definition depend on the value of t in this packet according to the following
table
If this vector is received on a long address and the e bit in this packet is not set, the decoder will
send a Message Packet from the word location immediately following the Vector Packet. Except
for the short message on a non-network address (t = 0), all message bits in the Message Packet are
unused and should be ignored
For long addresses, an extra 5 characters are sent in the Message Packet immediately following
the Vector Packet.
For a description of the R and N bits see the description of the same bits for numeric messages
in
t = Message type—These bits define the meaning of the “d” bits in this packet.
x = Unused bits—The value of these bits is not guaranteed.
2
7
0
10
Appendix A
Bit 7
Bit 7
d
c
s
R
1
6
Table B-30 Short Message / Tone Only Vector Definitions
9
n
0
0
x
e
0
d
c
s
N
Table B-31 Numeric Vector Packet Bit Assignments
0
5
8
5
d
b
s
N
4
3
7
4
Bit 6
Bit 6
WN
MC68181 Technical Data Sheet
d
b
s
N
p
b
Freescale Semiconductor, Inc.
x
.
3
2
6
1
6
3
6
For More Information On This Product,
d
b
s
N
2
1
5
2
d
b
s
N
1
0
4
Bit 5
Bit 5
WN
1
K
p
b
Go to: www.freescale.com
d
a
s
N
5
0
3
0
3
3
5
0
d
a
S
S
2
2
2
2
d
a
S
S
Bit 4
Bit 4
WN
.
1
1
1
1
K
b
x
4
2
d
a
S
S
4
0
0
0
0
First 3 numeric chars
8 sources (S) and 9 unused bits (s)
8 sources (S), message number (N),
message retrieval flag (R)
unused bits (s)
spare message type
Bit 3
Bit 3
WN
K
b
x
3
1
3
Bit 2
Bit 2
WN
V
K
Description
b
2
2
0
2
1
Bit 1
Bit 1
WN
V
n
b
2
2
1
1
, and 2
1
MOTOROLA
Bit 0
Bit 0
WN
V
n
b
1
0
0
0