ks8701 Samsung Semiconductor, Inc., ks8701 Datasheet - Page 22

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

KS8701
CONTROL PACKET
Table 5: Control Packet Bit Assignments
The Control Packet defines a number of different control bits for the KS8701. The ID of the Control Packet is 2.
FF:
SPM: Single Phase Mode. When this bit is set, the KS8701 will decode only one phase of the transmitted
PS:
SBI:
MTC: Minute Timer Clear. Setting this bit will cause the one minute timer to restart from 0.
Byte 3
Byte 2
Byte 1
Byte 0
Force Frame 0-7. These bits enable and disable forcing the KS8701 to look in frames 0 through 7.
When an FF bit is set, the KS8701 will decode the corresponding frame. Unlike the AF bits in the
Frame Assignment Packets, the system collapse of a FLEX system will not affect frames assigned
using the FF bits (e.g. Where as setting AF
to decode frames 0, 32, 64, and 96, setting FF
KS8701 to decode frame 0.). This may be useful for acquiring transmitted time information or channel
attributes (e.g. Local ID). (value after reset =0)
data. When this bit is clear, the KS8701 will decode all of the phases it receives. A change to this bit
while the KS8701 is on, will not take affect until the next block 0 of the next decoded frame. (value after
reset =0)
according to the following table. This value is determined by the service provider. A change to these
bits while the KS8701 is on, will not take affect until the next block 0 of a frame. (value after reset =0)
Send Block Information words 2-4. When this bit is set, any errored or time related block information
words 2-4 will be sent to the host. See “Block Information Word Packet” on page39 for a description of
the words sent. (value after reset=0)
Phase Select. When the SPM bit is set, these bits define what phase the KS8701 should decode
Bit 7
FF
0
0
0
7
PS
0
0
1
1
1
Bit 6
SPM
PS Value
SBI
FF
0
6
PS
0
1
0
1
Bit 5
FLEX
PS
0
FF
0
0
5
1
TM
Roaming Decoder II
1600bps
0
to 1 when the system collapse is 5 will cause the KS8701
Bit 4
MTC
PS
FF
a
a
a
a
0
0
(based on FLEX Data Rate)
to 1 when the system collapse is 5 will only cause the
4
0
Phase Decoded
3200bps
Bit 3
FF
0
0
0
3
a
a
c
c
Host-to-Decoder Packet Descriptions
Bit 2
FF
0
0
0
6400bps
2
a
b
c
d
Bit 1
EAE
FF
1
0
1
Bit 0
FF
ON
0
0
0
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