
S5T8701
FLEX
TM
ROAMING DECODER II
45
ROAMING STATUS PACKET
The S5T8701 will prompt the host to read a Roaming Status Packet if
RSR
,
MS1
,
MFI
,
MS2
,
MBI
,
MAW
,
NBU
NDR
1
,
NDR
0
,
or
SCU
is set.
Table 26: Roaming Status Packet Bit Assignments
Bit 7
0
RSR
x
x
Bit 6
1
MS1
x
x
Bit 5
1
MFI
x
x
Bit4
0
MS2
x
x
Bit 3
0
MBI
x
SCU
Bit 2
0
MAW
x
RSC
2
Bit 1
0
NBU
NDR
1
RSC
1
Bit 0
0
n
NDR
0
RSC
0
Byte 3
Byte 2
Byte 1
Byte 0
RSR:
Re-synchronization Signal Received. Set when the S5T8701 detected a re-synchronization signal
and the host configured the S5T8701 to ignore it via the IRS bit in the roaming control packet. This
bit is cleared when read.
MS1:
Missed Synchronization 1. Set when the S5T8701 failed to detect the first synchronization pattern
(A / A) of a FLEX frame and the S5T8701 was configured to report missed frame information via
the MFC bit in the roaming control packet. This bit is cleared when read.
MFI:
Missed Frame Information word. Set when the frame information word is received with an
uncorrectable number of errors and the S5T8701 was configured to report missed frame information
via the MFC bit in the roaming control packet. This bit is cleared when read.
MS2:
Missed Synchronization 2. Set when the S5T8701 failed to detect the second synchronization
pattern (C / C) of a frame and the S5T8701 was configured to report missed frame information via
the MFC bit in the roaming control packet. This bit is cleared when read.
MBI:
Missed Block Information word 1. Set when at least one of the block information word ones is
received with an uncorrectable number of errors and the S5T8701 was configured to report missed
frame information via the MFC bit in the roaming control packet. This bit is set no more than once
per frame regardless of the number of missed block information word 1's in the frame. This bit is
cleared when read.
MAW:
Missed Address Word. Set when any address words in the address field is received with an
uncorrectable number of errors and the S5T8701 was configured to report missed frame information
via the MFC bit in the roaming control packet. This bit is set no more than once per frame
regardless of the number of missed address words in the frame. This bit is cleared when read.
NBU:
Network Bit Update. Set when the NBC bit in the roaming control packet is set and a frame
information word is received with a correctable number of errors. This bit will not be set when the
frame information word is not received due to missing the first synchronization pattern (A / A). This
bit is cleared when read.
n:
Network bit value. When NBU is set, this is the value of the n bit in the last received frame
information word.