sm8211m Nippon Precision Circuits Inc, (NPC), sm8211m Datasheet - Page 15

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

Received Data Transmission (SM8211M to CPU)
In lock mode, if the receive data for the frame is rec-
ognized as one of the 24 addresses with 2 bit errors
or less, then ADD-DET goes HIGH for the duration
Table 14. Address set flags
A0
0
1
0
1
0
1
0
1
0
1
0
1
Detected address codeword
Internal bit
ADD-DET
RX-DATA
RX-CLK
A1
0
0
1
1
0
0
1
1
0
0
1
1
clock
A2
1
1
1
1
0
0
0
0
1
1
1
1
27 28 29 30 31
A3
0
0
0
0
1
1
1
1
1
1
1
1
A4
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Address
2
3
A
B
C
Figure 8. Received address transmit timing
4
5
6
7
Function
8
C call
D call
C call
D call
A call
B call
A call
B call
A call
B call
C call
D call
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
SM8211M
A0
0
1
0
1
0
1
0
1
0
1
0
1
of the next code word period and the corresponding
5-bit address information is transmitted to the CPU
on RX-DATA in sync with RX-CLK.
1 codeword
A1
0
0
1
1
0
0
1
1
0
0
1
1
A2
0
0
0
0
1
1
1
1
0
0
0
0
A3
0
0
0
0
0
0
0
0
1
1
1
1
NIPPON PRECISION CIRCUITS—15
A4
1
1
1
1
1
1
1
1
1
1
1
1
Address
A0 A1 A2 A3 A4
D
E
F
Function
A call
B call
C call
D call
A call
B call
C call
D call
A call
B call
C call
D call
0
1