DS_S5T8702 Datasheet, PDF (30/62 Pages) Samsung semiconductor – FEEX ALPHANUMERIC DECODER II

S5T8702
FEEX^TM ALPHANUMERIC DECODER II
USER ADDRESS ASSIGNMENT PACKETS
The S5T8702 has 16 user address words. Each word can be programmed to be a short address, part of a long
address, or the first part of a network ID. The addresses are configured using the Address Assignment Packets.
Each user address can be configured as long or short and tone-only or regular (network ID's are short and
regular). Although the host is allowed to send these packets while the S5T8702 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).
Byte 3
Byte 2
Byte 1
Byte 0
Table 18: User Address Assignment Packet Bit Assignments
Bit 7
1
0
A₁₅
A₇
Bit 6
0
LA
A₁₄
A₆
Bit 5
0
TOA
A₁₃
A₅
Bit 4
0
A₂₀
A₁₂
A₄
Bit 3
a₃
A₁₉
A₁₁
A₃
Bit 2
a₂
A₁₈
A₁₀
A₂
Bit 1
a₁
A₁₇
A₉
A₁
Bit 0
a₀
A₁₆
A₈
A₀
a:
LA:
TOA:
A:
User Address Word Number. This specifies which address word is being configured. A zero in this
field corresponds to address index zero (AI=0) in the Address Packet received from the S5T8702
when an address is detected. See "Address Packet" on page 36 for a description of the address
index field.
Long address. 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 address index
and the second word must be in the address index immediately following the first word.
Tone-Only Address. When this bit is set, the S5T8702 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.
Address word. This is the 21 bit value of the address word. Valid FLEX messaging addresses or
Network ID's may be used.
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