參數(shù)資料
型號: STA450A
廠商: 意法半導(dǎo)體
英文描述: XMRADIO SDARS SERVICE LAYER & SOURCE DECODER
中文描述: XMRADIO衛(wèi)星數(shù)字收音機(jī)服務(wù)層
文件頁數(shù): 37/66頁
文件大?。?/td> 439K
代理商: STA450A
37/66
STA450A
3.3.10 CHANNEL_CHECK
3.3.11 CHANNEL_UP_DOWN
BYTE
FIELD
VALUE
DESCRIPTION
0
CHANNEL_CHECK_REQ
0x11
Channel Check Request header
1
channel_number
1-255
Channel number
2
extract_type
0x00 – Audio
0x01 – Data
Service component type to extract. MMI
can extract the audio or data service
component.
BYTE
FIELD
VALUE
DESCRIPTION
0
CHANNEL_CHECK_CFM
0x91
Channel Check Confirm header
1
service_check_status
bit 7 – Service Present
0x80 – SID_PRESENT
0x00 – SID_ABSENT
bit 6 – PC Format
0x40 – PC_STANDARD
0x00 – PC_NONSTANDARD
bit 5 – Service On-Air
0x20 – SERVICE_ONAIR
0x00 – SERVICE_OFFAIR
bit 4 – Service Type
0x10 – TYPE_PRESENT
0x00 – TYPE_ABSENT
bit 3 – Service Free
0x08 – SERVICE_FREE
0x00 – SERVICE_NOTFREE
bit 2 – Activation
0x04 – ACT_PRESENT
0x00 – ACT_ABSENT
bit 1 – Authorization
0x02 – AUTH_PRESENT
0x00 – AUTH_ABSENT
b0 – Reserved
The bits are ordered from left to right.
The MSB is on the left and the LSB is on
the right.
b7, b6, b5, b4, b3, b2, b1, b0
2,3,4,5
crw
Channel Reference Word
Reference: Service Layer Specification
6
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
7 to 14
service_block1
Service Information Block 1
Reference: Service Layer Specification.
BYTE
FIELD
VALUE
DESCRIPTION
0
CHANNEL_UPDWN_REQ
0x12
Channel Up/Down Request header
1
Direction
0x00 – UP
0x01 - DOWN
Direction to search
2
channel_start_number
1-255
Channel start number
3
channel_end_number
1-255
Channel end number
4
extract_type
0x00 – Audio
0x01 – Data
Service type to extract. MMI can extract
the audio or data service component.
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