參數(shù)資料
型號: MT312
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 消費家電
英文描述: Satellite Channel Decoder
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝: MQFP-80
文件頁數(shù): 51/90頁
文件大小: 318K
代理商: MT312
Forward Error Correction
MT312
51
Viterbi BER =
7.2.6 Reed Solomon Uncorrected block Errors. Registers 17 - 18 (R)
RS UBC[15:0]: These two registers provide a measurement of the Reed Solomon uncorrected block errors.
Reading the high byte resets the byte and stops the count incrementing. Reading the low byte resets the byte
and restarts the count incrementing again.
Block Error Rate =
Where: dt = delta time between two readings in sec
Rs = Symbol rate in Baud
CR = Viterbi code rate
Blk size = 1632 bits for DVB and 1096 bits for DSS
In denominator: the factor 2 is for QPSK, change it to 1 for BPSK
NAME
ADR
B7
B6
B5
B4
B3
B2
B1
B0
Def
hex
RS UBC H
17
RS UBC[15:8] - Reed Solomon uncorrected block errors
(high byte)
R
00
RS UBC L
18
RS UBC[7:0] - Reed Solomon uncorrected block errors (low byte)
R
00
RS_BERCNT[23:0]
8.25E8
--------------------------------------------------
RS_UBC[15:0] *Blk_size
dt *Rs *CR
-----------------------------------------------------------------
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