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| 型號： | PCD5008H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 尋呼電路 |
| 英文描述： | FLEX Pager Decoder |
| 中文描述： | TELECOM, PAGING DECODER, PQFP32 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, SOT-358-1, LQFP-32 |
| 文件頁數(shù)： | 38/64頁 |
| 文件大?。?/td> | 341K |
| 代理商： | PCD5008H |
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1998 Jun 17
38
Philips Semiconductors
Product specification
FLEX
Pager Decoder
PCD5008
8.7.8
M
ESSAGE PACKETS
(ID = 03H
TO
57H)
8.7.8.1
General
The message field follows the vector field in the FLEX
protocol. It contains the message data, checksum
information, and may contain fragment and message
numbers (Sections 8.8.7 and 8.8.5). If the error bit of a
vector word is not set and the vector word indicates that
there are message words associated with the page, the
message words are sent in message packets to the host.
The ID of the message packet is the word number where
the message word was received in the frame.
WN:
word number of message word (3 to 87 decimal)
(Table 40). WN describes the location of the message
word in the frame.
e:
error (Table 40). Set if more than 2 bit errors are
detected in the word.
p:
phase (Table 40). This is the phase on which the vector
was found (0 = A, 1 = B, 2 = C and 3 = D).
i:
these are the information bits of the message word
(Table 40). The definition of these i bits depends on the
vector type and which word of the message is being
received.
8.7.8.2
Numeric Message
FLEX
numeric messages are encoded using the
4-bit BCD encoded characters sets described in Table 39.
Characters are placed in codewords along with additional
information about the message as described in
Tables 41 and 42 and the following definitions. The 4-bit
numeric characters of the message are designated as
letters a, b, c, d, ... z, A, B etc.
Only codewords containing the numeric message are to
be transmitted. The space character CH is used to fill any
unused 4-bit characters in the last word and zeros to fill
any remaining partial characters. The checksum includes
only the codewords comprising the shortened message,
along with the space and fill characters used to fill in the
last word.
Table 39
Standard and alternate numeric character sets;
Peoples Republic of China (ROC) option ‘on’
and ‘off’
B
3
B
2
B
1
B
0
CHARACTER
ROC ‘on’
ROC ‘off’
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
2
3
4
5
6
7
8
9
A
B
0
1
2
3
4
5
6
7
8
9
Spare
U
Space
]
[
Space
C
D
E
Table 40
Message packet bit assignments
BYTE
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
3
2
1
0
0
e
i
15
i
7
WN
6
p
1
i
14
i
6
WN
5
p
0
i
13
i
5
WN
4
i
20
i
12
i
4
WN
3
i
19
i
11
i
3
WN
2
i
18
i
10
i
2
WN
1
i
17
i
9
i
1
WN
0
i
16
i
8
i
0
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PDF描述 |
|---|---|
| PCD5013 | FLEX roaming decoder II |
| PCD5013H | FLEX roaming decoder II |
| PCD5032 | ADPCM CODEC for digital cordless telephones |
| PCD5032H | ADPCM CODEC for digital cordless telephones |
| PCD5032T | ADPCM CODEC for digital cordless telephones |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCD5008HBD-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication Decoder |
| PCD5013 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:FLEX roaming decoder II |
| PCD5013H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:FLEX roaming decoder II |
| PCD5032 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:ADPCM CODEC for digital cordless telephones |
| PCD5032B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Linear CODEC |
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