PCD5013 datasheet(39/76 Pages) PHILIPS

39 / 76 page

1999 Apr 12

Philips Semiconductors

Product speciﬁcation

FLEX

™ roaming decoder II

PCD5013

8.6.7

CONFIGURATION OF ASSIGNED FRAMES AND PAGER

COLLAPSE

(ID = 20H TO 27H)

The assigned frame and collapse value determine the

frames in which the decoding device typically looks for

messages (other system factors can cause the decoding

device to look in other frames in addition to the typical

frames).

The PCD5013 must be configured explicitly to receive all

required frames by setting the associated assigned

frame (AF) bits. For each enabled CAPCODE these are

the base frame and the associated frames implied by the

pager collapse value. For example if the PCD5013 has

one enabled address and it is assigned to base frame 3

with a collapse value of 4, the AF bits for

frames 3, 19, 35, 51, 67, 83, 99 and 115 should be set

and the AF bits for all other frames should be cleared.

When the PCD5013 is configured for manual collapse

mode by setting the MCM bit in the Roaming Control

Packet, the PCD5013 does not apply the received system

collapse to the AF bits. The host should set the AF bits for

all frames that should be decoded on all channels.

For example, if frames 0 and 64 should be decoded on one

channel and frames 4, 36, 68, and 100 should be decoded

on another channel, all six of the corresponding AF bits

should be set. The host can then change the receiver’s

carrier frequency after the PCD5013 decodes frames 0,

36, 64, and 100.

There are 8 frame assignment packets each capable of

assigning a range of 16 consecutive frame numbers.

f: frame range, see Table 38 for location in the frame

assignment packet and Table 36 for the AFs and values.

The value determines which 16 frames out of a range

of 128 correspond to the 16 AF bits in the packet. At least

one of these bits must have been set when the PCD5013

is turned on by setting the ON bit in the control packet.

Value after reset = 0.

AF: assigned frame (Table 38). If a bit is set, the PCD5013

decodes the associated FLEX

™ frame and scans its

contents for enabled addresses. Value after reset = 0.

8.6.8

CONFIGURATION OF ASSIGNED PHASE

The assigned phase is required only for single-phase

devices. It determines the phase (A, B, C, or D) in which

the messages are received.

For details of phase calculation see Section 8.6.5.

For details of programming the assigned phase

see Section 8.4.7.

Table 36 Frame assignment ranges

8.6.9

OPERATOR MESSAGING ADDRESS ENABLE PACKET

(ID = 04H)

The operator messaging address enable packet is used to

enable and disable the built-in FLEX

™ operator messaging

addresses. Enabling and disabling operator messaging

addresses does not affect on which frames the decoder IC

decodes. To ensure that the correct frames are decoded,

the host must modify the FF bits in the Control Packet or

the AF bits in the Frame Assignment Packets.

OAE: operator messaging address enable (Table 37).

When a bit is set, the corresponding operator messaging

address is enabled. When it is cleared, the corresponding

operator messaging address is disabled. OAE0 to OAE15

corresponds to the hexadecimal operator messaging

address values of 1F7810 through to 1F781F

respectively. Value after reset = 0.

AF15

AF0

frame 127

frame 112

frame 111

frame 96

frame 95

frame 80

frame 79

frame 64

frame 63

frame 48

frame 47

frame 32

frame 31

frame 16

frame 15

frame 0

Table 37 Operator messaging address enable packet bit assignments

BYTE

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

300000100

200000000

OAE15

OAE14

OAE13

OAE12

OAE11

OAE10

OAE9

OAE8

OAE7

OAE6

OAE5

OAE4

OAE3

OAE2

OAE1

OAE0

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