W93910 Datasheet, PDF (14/35 Pages) Winbond – ERMES PAGING DECODER

W93910
NORMAL MODE (NON-LOCK)
Decoder will enter normal mode while not in the home network or the border area indication condition.
In this mode, the decoder will switch and listen to different frequency channel based on the channel
scan control algorithm. The PLEN operating timing is shown in Figure 8.
PLEN
Status
Batch A of Batch A of
channel 2 channel 4
Batch A of
channel 6
The batch number is set to batch A
Figure 8. Normal Mode
Batch A of
channel 1
Batch A of
channel 0
ON
PLEN
High
XCNCG
uc
internal
channel
2468
PLL freq.
synthesizer
24
6
channel
Decoder
channel
24
6
AC EF D
AC
E
AC
E
B9
B
B
Notes:
1. uC need to count the number of XCNCG pulse during the PLEN active
period, and program the synthesizer with suitable data during the
PLEN inactive period.
2. PLEN will be the dash line if there is no paging message.
Figure 9. Channel scan in NORMAL MODE
- 14 -