ks8701 Samsung Semiconductor, Inc., ks8701 Datasheet - Page 60

• Manufacturer Part Number: ks8701
• Description: Flextm Roaming Decoder Ii
• Manufacturer: Samsung Semiconductor, Inc.

KS8701
MESSAGE BUILDING
associated Message Packets. The tables below show a more complex example of receiving three Messages and
two Block Information Word Packets in the first two blocks of a 2 phase 3200 bps, FLEX frame. Note that the
messages shown may be portions of fragmented or group messages. Note further that in the case of a 6400 bps
FLEX signal, there would be four phases: A, B, C and D, and in the case of a 1600 bps signal there would be only
a single phase A.
Note contents of words not meant to be received by the host are left blank. Each phase begins with a block
information word (WN 0), this is not sent to the host. The first message is in phase A and has an address (WN 3),
vector (WN 7) and three message words (WN 9- 11). The second message is also in phase A and has an address
(WN 4), a vector (WN 8) and four message words (WN 12 - 15). The third message is in phase C and has a 2
word long address (WN 5 - 6) followed by a vector (WN 10) and three message words. Since the third message is
sent on a long address, the first message word (WN 11) begins immediately after the vector. The vector indicates
the location of the second and third message words (WN 14 - 15).
Table 30: FLEX SIGNAL
BLOCK
A simple message consists of an Address Packet followed by a Vector Packet indicating the word numbers of
Table 30 on page 59 shows the block number, word number (WN) and word content of both phases A and C.
0
1
Word Number
10
11
12
13
14
15
0
1
3
4
5
6
7
8
9
FLEX
MESSAGE 1,1
MESSAGE 1,2
MESSAGE 1,3
MESSAGE 2,1
MESSAGE 2,2
MESSAGE 2,3
MESSAGE 2,4
ADDRESS 1
ADDRESS 2
VECTOR 1
VECTOR 2
PHASE A
TM
BIW 1
Roaming Decoder II
LONG ADDRESS 3 WORD 1
LONG ADDRESS 3 WORD 2
Appendix A: Application Notes
MESSAGE 3,1
MESSAGE 3,2
MESSAGE 3,3
VECTOR 3
PHASE C
BIW 1
BIW
BIW
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