PCD5002 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
componentes Descripción
Lista de partido
PCD5002 Datasheet PDF : 48 Pages
| |||
Philips Semiconductors
Advanced POCSAG and APOC-1 Paging
Decoder
Product specification
PCD5002
Table 5 Call header format
BYTE NUMBER
1
2
3
BIT 7
(MSB)
0
0
X
BIT 6
S3
S3
X
BIT 5
S2
S2
F0
BIT 4
S1
S1
F1
BIT 3
R3
R3
E3
BIT 2
R2
R2
E2
BIT 1
R1
R1
E1
BIT 0
(LSB)
DF
0
0
Table 6 Call header bit identification
BITS (MSB to LSB)
S3 to S1
R3 to R1
DF
F0 and F1
E3 to E1
IDENTIFICATION
identifier number of sync word for current batch (7 = standard POCSAG)
identifier number of user address (RIC)
data fail mode indication (1 = data fail mode); note 1
function bits of received address codeword (bits 20 and 21)
detected error type; see Table 11; E3 = 0 in a concatenated call header
Note
1. The DF bit in the call header is set:
a) When the sync word of the batch in which the (beginning of the) call was received, did not match the standard
POCSAG or a user-programmed sync word. The sync word identifier (bits S3 to S1) will then be made 0.
b) When any codeword of a previous call received in the same batch was uncorrectable.
Table 7 Message data format
BYTE NUMBER
1
2
3
BIT 7
(MSB)
M2
M10
M18
BIT 6
M3
M11
M19
BIT 5
M4
M12
M20
BIT 4
M5
M13
M21
BIT 3
M6
M14
E3
BIT 2
M7
M15
E2
BIT 1
M8
M16
E1
BIT 0
(LSB)
M9
M17
M1
Table 8 Message data bit identification
BITS (MSB to LSB)
M2 to M21
E3 to E1
M1
IDENTIFICATION
message codeword data bits
detected error type; see Table 11
message codeword flag
Table 9 Call terminator format
BYTE NUMBER
1
2
3
BIT 7
(MSB)
FT
FT
X
BIT 6
S3
S3
X
BIT 5
S2
S2
X
BIT 4
S1
S1
X
BIT 3
0
0
E3
BIT 2
0
0
E2
BIT 1
0
0
E1
BIT 0
(LSB)
DF
X
0
1997 Jun 24
14
Share Link: 