ks8701 Samsung Semiconductor, Inc., ks8701 Datasheet - Page 63

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

Appendix A: Application Notes
Table 32: Alphanumeric Message without fragmentation
Table 33: Alphanumeric Message with fragmentation
62
PACKET
PACKET
l
l
a.
2nd
2nd
3rd
4th
1st
3rd
4th
5th
6th
7th
8th
9th
1st
When the host receives a Message Packet with the Message Continued Flag “C” = 0, it will send two All
Frame Mode Packets to the KS8701 with the “DAF” bit = 1. The two packets decrement the count for
the first fragment and the last fragment. This decrements the all frame counter to zero, if no other
fragmented messages, temporary addresses are pending and the FAF bit is clear in the All Frame Mode
Register, the KS8701 returns to normal operation.
The above process must be repeated for each occurrence of a fragmented message. The host must
keep track of the number of fragmented messages being decoded and insure the all frame mode
counter decrements after each fragment or after each fragmented message.
Host Initiated Packet. The KS8701 returns a packet according to “Decoder-to-Host Packet Descriptions”
on page 38.
PACKET TYPE
PACKET TYPE
ADDRESS 1
ADDRESS 1
ADDRESS 1
VECTOR 1
MESSAGE
VECTOR 1
VECTOR 1
MESSAGE
MESSAGE
Variable
Variable
STATUS
STATUS
a
a
PHASE
PHASE
A
A
A
A
A
A
B
B
B
FLEX
All Frame
All Frame
Counter
Counter
TM
0
1
1
0
0
1
1
1
1
2
2
1
1
Roaming Decoder II
Address 1 is received
Vector = Alphanumeric Type
Message Word received “C” bit = 0, No more
fragments are expected.
Host writes All Frame Mode Packet to the KS8701
with the “DAF” bit = 1
Address 1 is received
Vector = Alphanumeric Type
Message Word received “C” bit = 1, Message is
fragmented, more expected
End of Frame Indication (EOF = 1)
Address 1 is received
Vector = Alphanumeric Type
Message Word received “C” bit = 1, Message is
fragmented, more expected.
Host writes All Frame Mode Packet to the KS8701
with the “DAF” bit = 1
End of Frame Indication (EOF = 1 )
COMMENT
COMMENT
KS8701