mc68181 Freescale Semiconductor, Inc, mc68181 Datasheet - Page 86

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

MC68181
Host-to-Decoder Packet Descriptions
User Address Assignment Packets
B-26
USER ADDRESS WORD NUMBER (a
LONG ADDRESS (LA)
TONE-ONLY ADDRESS (TOA)
ADDRESS WORD (A
Byte
3
2
1
0
The FLEX chip IC has sixteen user address words. Each word can be programmed to
be a short address, part of a long address,
addresses are configured using the Address Assignment Packets. Each user address
can be configured as long or short and tone-only or regular. N
and regular
IC is on, the host must disable the user address word by clearing the corresponding
UAE bit in the User Address Enable Packet before changing any of the bits in the
corresponding User Address Assignment Packet. This method allows for easy
reprogramming of user addresses without disrupting normal operation. The IDs for
these packets range from 128 to 143 (decimal).
This specifies which address word is being configured. Having all 0s in this field
corresponds to Address Index zero (AI = 0) in the Address Packet received from the
FLEX chip IC when an address is detected. (See Address Packet on page B-29.)
When this bit is set, the address is considered a long address. Both words of a long
address must have this bit set. The first word of a long address must have an even
user address word number and the second word must be in the address index
immediately following the first word. Long addresses of the 2–3 and 2–4 set (See
FLEX CAPCODES on page A-21) must be programmed to higher user address word
numbers than long addresses of the 1–2, 1–3, and 1–4 set.
When this bit is set, the FLEX chip IC will consider this address a tone-only address
and will not decode a vector word when the address is received. If the TOA bit of a
long address word is set, the TOA bit of the other word of the long address must also
be set.
This is the 21 bit value of the address word. Valid FLEX messaging addresses
Network ID’s may be
Table B-25 User Address Assignment Packet Bit Assignments
Bit 7
A
A
1
0
15
7
. Although the host is allowed to send these packets while the FLEX chip
Bit 6
0
A
LA
MC68181 Technical Data Sheet
A
–A
Freescale Semiconductor, Inc.
0
14
6
For More Information On This Product,
20
used.
)
Bit 5
TOA
A
A
0
Go to: www.freescale.com
13
5
0
Bit 4
–a
A
A
A
0
20
12
4
3
)
or the first part of a network ID
Bit 3
A
A
A
a
19
11
3
3
Bit 2
A
A
A
a
18
10
2
2
etwork ID’s are short
Bit 1
A
A
A
a
17
1
9
1
MOTOROLA
. The
Bit 0
A
A
A
a
or
16
0
8
0