- 您現在的位置：買賣IC網 > PDF目錄382380 > PCD5003 (NXP Semiconductors N.V.) Advanced POCSAG Paging Decoder PDF資料下載
參數資料
| 型號： | PCD5003 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Advanced POCSAG Paging Decoder |
| 中文描述： | 高級尋呼POCSAG碼解碼器 |
| 文件頁數： | 13/44頁 |
| 文件大小： | 187K |
| 代理商： | PCD5003 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
1997 Jun 24
13
Philips Semiconductors
Product specification
Advanced POCSAG Paging Decoder
PCD5003
Table 9
Call terminator bit identification
Note
1.
The DF bit in the call terminator is set:
a) When any call data codeword in the terminating batch was uncorrectable, while in ‘data receive’ mode.
b) When the sync word at the start of the terminating batch did not match the standard POCSAG or a
user-programmed sync word, while in ‘data fail’ mode.
Table 10
Error type identification (note 1)
Note
1.
POCSAG code allows a maximum of 3 bit errors to be detected per codeword.
BITS (MSB to LSB)
IDENTIFICATION
FT
forced call termination (1 = yes)
identifier number of last sync word
data fail mode indication (1 = data fail mode); note 1
detected error type; see Table 10; E3 = 0 in a call terminator
S3 to S1
DF
E3 to E1
E3
E2
E1
ERROR TYPE
NUMBER OF ERRORS
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
no errors - correct codeword
parity bit in error
single bit error
single bit error and parity error
not used
4-bit burst error and parity error
2-bit random error
uncorrectable codeword
0
1
1 + parity
1
3 (e.g.1101)
2
3 or more
Successful call termination occurs by reception of a valid
address codeword with less than 2 bit errors.
Unsuccessful termination occurs when sync word is not
detected while in ‘data fail’ mode.
It is generally possible to distinguish these two conditions
using the sync word identifier number (bits S3 to S1); the
identifier number will be non-zero for correct termination,
and zero for sync word failure.
Only when a call is received in ‘data fail’ mode and the call
is terminated before the end of the batch, is it not possible
to distinguish unsuccessful from correct termination.
Reception of message data can be terminated at any time
by transmitting a forced call termination command to the
control register via the I
2
C-bus. Any call received will then
be terminated immediately and ‘data fail’ mode will be
entered.
7.18
Receiver and oscillator control
A paging receiver and an RF oscillator circuit can be
controlled independently via enable outputs RXE and ROE
respectively. Their operating periods are optimized
according to the synchronization mode of the decoder.
Each enable signal has its own programmable
establishment time (see Table 11).
7.19
External receiver control and monitoring
An external controller may enable the receiver control
outputs continuously via an I
2
C-bus command, overruling
the normal enable pattern. Data reception continues
normally. This mode can be left by means of a reset or an
I
2
C-bus command.
External monitoring of the receiver control output RXE is
possible via bit D6 in the status register, when enabled via
the control register (D2 = 1). Each change of state of
output RXE will generate an external interrupt at
output INT.
相關PDF資料 |
PDF描述 |
|---|---|
| PCD5003H | Advanced POCSAG Paging Decoder |
| PCD5008 | FLEX Pager Decoder |
| PCD5008H | FLEX Pager Decoder |
| PCD5013 | FLEX roaming decoder II |
| PCD5013H | FLEX roaming decoder II |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PCD5003A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced Pager Decoder for POCSAG |
| PCD5003AH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Enhanced Pager Decoder for POCSAG |
| PCD5003H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Advanced POCSAG Paging Decoder |
| PCD5003HB-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication Decoder |
| PCD5003U/10 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Advanced POCSAG Paging Decoder |
發布緊急采購，3分鐘左右您將得到回復。