
1999 Apr 12
42
Philips Semiconductors
Product specication
FLEX
roaming decoder II
PCD5013
8.7.5
SHORT MESSAGE/TONE-ONLY VECTOR PACKET
V: vector type identifier, these bits set to 010 for a
short message/tone-only vector (Table 42).
WN: word number of vector (2 to 87 decimal) (Table 42).
WN describes the location of the vector word in the frame.
e: error (Table 42). 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 42). This is the phase on which the vector
was found (0 = A, 1 = B,2=Cand3=D).
t: message type (Tables 42 and 43). These bits define the
meaning of the d bits in this packet.
x: unused bits (Table 42). The value of these bits is not
guaranteed.
d: data bits whose definition depends on the value of t in
this packet according to Table 43. Note that if this vector is
received on a long address and the e bit in this packet is
not set, the decoder sends a message packet from the
word location immediately following the vector packet.
Except for the short message on a non-network address
(t = 0), all messages bits in the message packet are
unused and should be ignored.
Table 42 Short message/tone-only vector packet bit assignments
Table 43 Short message/tone-only vector denitions; note 1
Notes
1. When this vector is sent in conjunction with a Network Address, the t1,to value ‘00’ represents Network ID information.
In this case the bit definitions are: T3 T2 T1 T0 M2 M1 M0 A4 A3 A2 A1 A0
Where T are Traffic Management Flags, M represents a multiplier and A is the service area.
2. For long addresses, an extra 5 characters are sent in the message packet immediately following the vector packet.
t0 and t1 are also set to ‘00’ when defining the last 12 bits of a Network Address.
BYTE
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
30
WN6
WN5
WN4
WN3
WN2
WN1
WN0
2e
p1
p0
xx
V2
V1
V0
1x
x
d11
d10
d9
d8
d7
d6
0d5
d4
d3
d2
d1
d0
t1
t0
t1
t0
d11
d10
d9
d8
d7
d6
d5
d4
d3
d2
d1
d0
DESCRIPTION
00
c3
c2
c1
c0
b3
b2
b1
b0
a3
a2
a1
a0
rst 3 numeric characters; note 2
01
s8
s7
s6
s5
s4
s3
s2
s1
s0
S2
S1
S0
8 sources (S) and 9 unused bits (s)
10
s1
s0
R0
N5
N4
N3
N2
N1
N0
S2
S1
S0
8 sources (S), message retrieval
ag (R), message number (N) and
2 unused bits (s)
1
spare message type