W93910 Datasheet, PDF (30/35 Pages) Winbond – ERMES PAGING DECODER

W93910
LED CONTROL
LEDO will output a frequency while ENLED is in high level. The LEDO output frequency is selected by
option bit LEDF and PLEN condition as described in table 38. When the LEDF is set to 1, the TCTL1
and TCTL2 control pin will also be activated to output the control signal. The TCTL1 and TCTL2 timing
is shown in figure 3.
PLEN
ENLED
LEDO
.......
10 kHZ
Option bit LEDF = 1
40 kHZ
Figure 13. LEDO Timing
OPTION BIT AND PLEN PIN
LEDF
PLEN Status
0
inactive
0
active
1
inactive
1
active
Table 38. LED option bit
FUNCTION
LEDO output frequency
4 kHz
16 kHz
10 kHZ
40 kHZ
RESET CONDITION
The W93910 has two reset conditions.
Power on & XRST active
• Reset all 192 option bits and all remote programming registers
• RFEN, PLEN, QC1, QC2, LOCK, MSGVAL, MCLK, MDATA in non-active state
ON pin rising edge is occurred
• Oscillator start oscillation
• Reset channel number to CH3−CH0 of the 192 option bits
• The values of remote programming registers is not changed
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