MT312C ZARLINK [Zarlink Semiconductor Inc], MT312C Datasheet - Page 51

• Manufacturer Part Number: MT312C
• Description: Satellite Channel Decoder
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

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 UBC H
RS UBC L
NAME
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
RS_BERCNT[23:0]
-------------------------------------------------- -
RS_UBC[15:0] *Blk_size
---------------------------------------------------------------- -
ADR
17
18
8.25E8
dt *Rs *CR
RS UBC[7:0] - Reed Solomon uncorrected block errors (low byte)
B7
RS UBC[15:8] - Reed Solomon uncorrected block errors
B6
B5
(high byte)
B4
Forward Error Correction
B3
B2
B1
B0
R
R
MT312
hex
Def
00
00
51