PCD5008 datasheet(31/64 Pages) PHILIPS

31 / 64 page

1998 Jun 17

Philips Semiconductors

Product speciﬁcation

FLEX

™ Pager Decoder

PCD5008

8.6.6

CONFIGURATION OF USER ADDRESSES

(ID = 78H, 80H TO 8FH)

The PCD5008 has 16 user address locations which can be

programmed as long or short, and configured as priority

and/or tone-only. After a reset all address locations are

disabled. Short addresses occupy a single location, long

addresses occupy two locations. The first word of a long

address must be in an even address location and the

second word must be in the address index immediately

following the first word. Address location containing long

addresses of the 2-3 and 2-4 set (Section 8.6.3) must

follow any address locations programmed as long

addresses of the 1-2, 1-3 and 1-4 set.

User addresses are programmed using the address

assignment packets, and are enabled and disabled using

the address enable packet. To allow easy reprogramming

of user addresses without disrupting normal operation, the

host can send address assignment packets while the

PCD5008 is on. In this case, the host must disable the user

address location(s) by clearing the corresponding user

address enable (UAE) bit in the UAE packet before

changing any of the bits in the corresponding address

assignment packet.

a: address location (Table 26). This specifies which

address location is being configured. A zero in this field

corresponds to address index zero (AI = 0) in the address

packet received from the PCD5008 when an address is

detected (Section 8.7.2).

LA: long address (Table 26). When this bit is set, the

address is configured as a long address. Both words of a

long address must have this bit set.

TOA: tone-only address (Table 26). When this bit is set,

the PCD5008 considers this address a tone-only address

and does not decode a vector word when the address is

received. Both words of a long, tone only address must

have this bit set.

A: address word (Table 26). This is the 21 bit value of the

address word (A20 = MSB). Valid FLEX

™ messaging

addresses must be used. For the conversion from a

CAPCODE (Section 8.6.4).

UAE: user address enable (Table 27). When a bit is set,

the corresponding user address location is enabled. When

it is cleared, the corresponding user address location is

disabled. UAE0 corresponds to the user address location

configured using a packet ID of 80H and UAE15

corresponds to the user address location configured using

a packet ID of 8FH. In some instances, if an invalid

FLEX

™ messaging address is programmed, it is not

detected even when the address is enabled. Value after

reset = 0.

Table 26 Address assignment packet bit assignments (ID = 80H to 8FH)

Table 27 Address enable packet bit assignments (ID = 78H)

BYTE

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

31000

TOA

A20

A19

A18

A17

A16

1A15

A14

A13

A12

A11

A10

0A7

BYTE

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

301111000

200000000

UAE15

UAE14

UAE13

UAE12

UAE11

UAE10

UAE9

UAE8

UAE7

UAE6

UAE5

UAE4

UAE3

UAE2

UAE1

UAE0

PCD5008 Datasheet(PDF) 31 Page - NXP Semiconductors

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