PCD5008 datasheet(34/64 Pages) PHILIPS

34 / 64 page

1998 Jun 17

Philips Semiconductors

Product speciﬁcation

FLEX

™ Pager Decoder

PCD5008

8.7.4

NUMERIC VECTOR PACKET

WN: word number of vector (2 to 87 decimal) (Table 31).

WN describes the location of the vector word in the frame.

e: error (Table 31). Set if more than 2 bit errors are

detected in the word, if the check character calculation fails

after error correction has been performed, or if the vector

value is determined to be invalid.

p: phase (Table 31). This is the phase on which the vector

was found (0 = A, 1 = B,2=Cand3=D).

K: first check bits of the message checksum

(Table 31 and Section 8.8.6).

n: number of message words in the message (Table 31),

including the second vector word for long addresses,

(000 = 1 word message, 001 = 2 word message, etc.).

For long addresses, the first message word is located in

the word location that immediately follows the associated

vector.

b: word number of message start in the message field

(3 to 87 decimal) (Table 31). For long addresses, the word

number indicates the location of the second message

word.

x: unused bits (Table 31). The value of these bits is not

guaranteed.

V: vector type identifier (Table 32).

Table 31 Numeric vector packet bit assignments

Table 32 Numeric vector deﬁnitions

BYTE

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

WN6

WN5

WN4

WN3

WN2

WN1

WN0

0n0

TYPE

DESCRIPTION

standard numeric

No special formatting of characters is speciﬁed.

special format numeric

Formatting of the received characters is predetermined by

special rules in the host (e.g. inserting spaces and dashes).

numbered numeric

Received information is numbered by the service provider to

indicate all messages have been properly received.

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