U2739M-BFC ATMEL [ATMEL Corporation], U2739M-BFC Datasheet - Page 58

• Manufacturer Part Number: U2739M-BFC
• Description: DAB One-Chip Channel- and Source Decoder
• Manufacturer: ATMEL [ATMEL Corporation]

8.4.2
Command Overview:
D Get MPEG ancillary data (X–PAD)
Command Parameters:
U2739M-B
58 (69)
XPNUM
X–PADm
Parameter
7
0
7
0
Read X–PAD
DAB
DAB
6
1
6
1
X–PAD block number n
(n from 1..5)
X–PAD byte m
Read RFU
Meaning
5
1
7
0
5
1
7
Address Mode
Address Mode
4
0
6
1
4
0
6
U2739M-B
U2739M-B
The maximum X–PAD capacity supported by the U2739M-B is 64kbit/s.
The access is splitted into 6 blocks (numbered 1..5) of 32 bytes.
The blocks are time aligned, that means block 1 is the first block in an
MPEG frame after audio samples.
Byte 0 is the first byte of block n, byte 31 the last one. It is followed by
the first one of block n+1.
Use MC command “RFU” to read block 6
3
1
5
0
3
1
5
Data Mode
Data Mode
2
1
4
1
2
1
4
X–PAD31
X–PAD0
...
Write Command
Write Command
1
1
3
0
1
0
3
Description
0
1
2
0
1
2
XPNUM
1
1
Rev. A1, 22-May-01
0
0
Command
sequence:
$XX
$XX
$5X
$6D
$6F