sm8211m Nippon Precision Circuits Inc, (NPC), sm8211m Datasheet - Page 19

• Manufacturer Part Number: sm8211m
• Description: Pocsag Decoder For Pagers
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

FLOWCHARTS
No
No
No
TX-CLK increment (T = T + 1)
TX-CLK count reset (T = 0)
ID code and flags read in
ID code and flags set
BS1 = BS2 = HIGH
BS1 = BS3 = LOW
BS1 = BS3 = LOW
Parentheses indicate operation with flag BS2 = 1.
(BS1 = HIGH)
(BS2 = HIGH)
RST = HIGH
RST = LOW
BS3 = HIGH
BS2 = LOW
Switch ON
Preamble
T = 225
Yes
Yes
Yes
No
Bit clock counter reset (T = 0)
(BS1 = BS2 = BS3 = LOW)
Bit clock count increment
Sync code detected
BS1 = BS3 = LOW
Preamble pattern
(T = T + 1)
Rate error
Preamble
T = 544
Idle
SM8211M
No
No
No
Yes
Yes
Yes
SYN-VAL = HIGH
Yes
Lock
No
No
NIPPON PRECISION CIRCUITS—19
(BS1 = BS2 = BS3 = LOW)
Receive timing finished
Just transferred from
Sync code detected
BS1 = BS2 = HIGH
BS1 = BS3 = LOW
BS3 output timing
Preamble present
(BS1 = HIGH)
(BS2 = HIGH)
BS3 = HIGH
BS2 = LOW
lock mode
Idle
Yes
No
No
Yes
Yes
Preamble
No
Yes