参数资料
型号: L64781
厂商: LSI CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封装: PLASTIC, QFP-100
文件页数: 159/164页
文件大小: 2003K
代理商: L64781
5-24
Registers
5.4.4 TPS Register 3 (0x06)
This is a 7-bit wide, read/write register.
FRAME_NB
COFDM Frame Number
D[6:5] R
In read mode, FRAME_NB provides the last value of the
frame number received by the channel, using the TPS
signalling information.
The initial value of FRAME_NB is 00.
HIERARCHY
COFDM Nonuniform Constellation Ratio
D[4:2] R/W
In read mode, the HIERARCHY provides the last value
received by the channel, using the TPS signalling
information.
In write mode, the HIERARCHY stores the next
constellation-expansion ratio for the system to use, after
applying it.
D7
D6
D5
D4
D2
D1
D0
Reserved
FRAME_NB
HIERARCHY
CONSTELLATION
FRAME_NB[1:0]
Denition
0
Frame 0
0
1
Frame 1
1
0
Frame 2
1
Frame 3
HIERARCHY[2:0]
Denition
0
Nonhierarchical (initial value)
00
1
01
0
01
1
0
Reserved
1
0
1
Reserved
1
0
Reserved
1
Reserved
α
1
=
α
2
=
α
4
=
l64781.book Page 24 Friday, January 19, 2001 1:28 PM
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