STA450A datasheet(39/66 Pages) STMICROELECTRONICS

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STA450A

3.3.13 SERVICE_EXTRACT

3,4,5,6

crw

Channel Reference Word

Reference: Service Layer Specification

sib1_status

0x00 – SIB1_ABSENT

0x01 – SIB1_PRESENT

If service information block 1 was not

received, then DSP returns

SIB1_ABSENT. If service information

block 1 was received, then DSP returns

SIB1_PRESENT.

8 to 15

service_block1

Service Information Block 1

Reference: Service Layer Specification

BYTE

FIELD

VALUE

DESCRIPTION

SERVICE_EXTRACT_REQ

0x14

Service Extract Request header

location

0x00 – location 0

0x01 – location 1

Since DSP can extract two services

simultaneously, XM stack assigns an

extraction location.

2 – 3

pc_detect_time

0x0001 to 0xFFFF

Number of master frame that the DSP

waits for the primary PCID or secondary

PCID.

sid

1 – 255

Service Identifier

sc_type

0x03 – Audio AMBE

0x05 – Audio AAC+

0x0A – Trans. Data

Service Component Type

Reference: Service Layer Specification;

page 21

primary_pcid

5 – 255

Primary Payload Channel Identification

Reference: Transport Layer Specification

Secondary_pcid

5 – 255

Secondary Payload Channel

Identification

Reference: Transport Layer Specification

Routing

0x00 – No routing

0x01 – AUD_PORT

0x02 – DAT_PORT

0x03 – BOTH_PORT

Routing information

A data service component can only be

routed to the data port (DAT_PORT). An

audio service component be routed to

audio port (AUD_PORT), data port

(DAT_PORT) or both the audio and data

port (BOTH_PORT).

BYTE

FIELD

VALUE

DESCRIPTION

SERVICE_EXTRACT_CFM

0x94

Service Extract Confirm header

Location

0x00 – location 0

0x01 – location 1

0xFF – command refused

Location assigned to the service. If the

command was refused the location is set

to 0xFF. This can happen if the

extraction of a component with routing

for audio port is commanded and a

component with routing audio port is

already extracted in the other location or

if an inexistent location is passed to the

DSP

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