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參數(shù)資料
| 型號： | S5T8701 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | FLEX ROAMING DECODER II |
| 中文描述： | FleX創(chuàng)建漫游解碼器二 |
| 文件頁數(shù)： | 22/70頁 |
| 文件大?。?/td> | 506K |
| 代理商： | S5T8701 |
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FLEX
TM
ROAMING DECODER II
S5T8701
22
ROAMING CONTROL PACKET
The roaming control packet controls the features of the S5T8701 that allow implementation of a roaming device.
The ID of the roaming control packet is 5.
Table 8: Roaming Control Packet Bit Assignments
Bit 7
0
IRS
RND
0
Bit 6
0
NBC
ABI
0
Bit 5
0
MCM
SAS
MFC
1
Bit4
0
IS1
DAS
MFC
0
Bit 3
0
SDF
0
0
Bit 2
1
RSP
0
0
Bit 1
0
SND
0
MCO
1
Bit 0
1
CND
0
MCO
0
Byte 3
Byte 2
Byte 1
Byte 0
IRS:
Ignore Re-synchronization Signal. When this bit is set, S5T8701 will not go asynchronous when
detecting an Ar or Ar signal during searches for A-words. It will merely report that the re-
synchronization signal was received by setting RSR to 1 in the Roaming Status packet. This allows
the host to decide what to do when the paging device is synchronous to more than one channel and
only one channel is sending the re-synchronization signal. It also prevents the S5T8701 from losing
synchronization when it detects the re-synchronization signal while the paging device is checking an
unknown channel. This bit is set and cleared by the host. (value after reset=0)
NBC:
Network Bit Check. Setting this bit will enable reporting of the received network bit value (NBU and
n) in the Roaming Status Packet. Setting this bit also makes the S5T8701 abandon a frame after
the Frame Info word without synchronizing to the frame if the frame information word is
uncorrectable or if the n bit in the frame information word is not set. If the S5T8701 was in
synchronous mode when this occurred (probably due to synchronizing to a second channel), it will
maintain synchronization to the original channel. If the S5T8701 was in asynchronous mode when
this occurred, it will stay in asynchronous mode and end the A-word search. This is done to avoid
synchronizing to a non-roaming channel when searching for roaming channels. This bit is set and
cleared by the host. (value after reset=0)
MCM:
Manual Collapse Mode. When this bit is set, the S5T8701 behaves as if the system collapse was 7.
The S5T8701 will not apply the received system collapse to the AF bits. When this bit is set, the
received system collapse is reported to the host via SCU and RSC in the Roaming Status Packet.
This is so the host can modify the AF bits based on the system collapse of the channel. This bit is
set and cleared by the host. (value after reset=0)
IS1:
Invert EXTS1. Setting this bit inverts the expected polarity of the EXTS1 pin from the way it is
configured by SP1 in the Configuration Packet (e.g. if both IS1 and SP1 are set, the polarity of the
EXTS1 pin is untouched). This bit is intended to be changed when a change in a channel changes
the polarity of the received signal. This bit is set and cleared by the host. This bit has the equivalent
effect when using the internal demodulator. (value after reset=0)
SDF:
Stop Decoding Frame. Setting this bit causes the S5T8701 to stop decoding a frame without losing
frame synchronization. This bit is set by the host, and cleared by the S5T8701 once it has been
processed. The packet with the SDF bit set must be sent after receiving the status packet with EA
bit set. It must be sent within 40ms of the end of block in which the S5T8701 set the EA bit.
(value after reset=0)
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PDF描述 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S5T8701X01-E0R0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FLEX ROAMING DECODER II |
| S5T8702 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FEEX ALPHANUMERIC DECODER II |
| S5T8702X01-E0R0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FEEX ALPHANUMERIC DECODER II |
| S5T8803A | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:10 CH PLL |
| S5T8803A01-D0B0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:10 CH PLL |
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