W93910 Datasheet, PDF (28/35 Pages) Winbond – ERMES PAGING DECODER

W93910
Unused bit in message shall be set as the following default values:
• Alphanumeric: EOM character and partial EOM character (MSB used first) shall be repeated to fill the
remaining bits;
• Numeric: space character and partial space character ( MSB used first ) shall be repeated to fill the
remaining bits;
• Transparent data: binary zeros shall be used to fill the remaining bits;
The bit mapping in MDW unit for numeric and 7 bit alphanumeric are as follows.
For numeric format, bit17−14 of MDW0 construct the first numeric, bit13−10 are the second... bit1−0 of
MDW0 and bit17−16 of MDW1 are the fifth numeric.... Therefore, two MDWs will construct 9 numeric.
For 7 bit alphanumeric format, bit17−11 of MDW0 construct the first character, bit10−4 of MDW0 are the
second character, bit 3−0 of MDW0 and bit17−15 of MDW1 are the third character... The alphanumeric
definition is depended on Character Set (C.S.). The default C.S. is 00000.
EDW Definition
The EDW will follow the last MDW while the paging message is completed. Normally, the ter flag is
"0" except in a long message completion situation. For any submessage of a long message except the
last one, the ter flag of EDW is "0". Only when the long message is completed will the ter flag of EDW
be "1". There is some other system information in byte2 of EDW such as eti flag, bai flag and current
cycle number, cy5−cy0. The ch3−0 of byte3 indicate which frequency channel the current paging
message is caught from and the bn3−bn0 of byte3 indicate which batch the message is completed in.
EDW
b7
b6
b5
b4
b3
b2
b1
b0
byte3
1
1
1
0
0
ter
epa
etm
byte2
eti
bai
cy5
cy4
cy3
cy2
cy1
cy0
byte1
bn3
bn2
bn1
bn0
ch3
ch2
ch1
ch0
Table 35. EDW format
EDW description:
BIT
ter
epa
etm
cy5−cy0
eti
bai
FUNCTION
set to "1" while current long message is completed, otherwise ter flag is "0" for any
individual call or submessage.
set to "1" if paging message searching is stopped due to PA inconsistency
set to "1" if paging message searching is stopped due to 12 sec time out
cycle number from 0(000000) −59(111011) as minute index.
External Traffic indicator in SI field
Border Area Indicator flag in SI field
Table 36. EDW description
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