MT312 Zarlink Semiconductor, MT312 Datasheet - Page 60

• Manufacturer Part Number: MT312
• Description: Satellite Channel Decoder
• Manufacturer: Zarlink Semiconductor

10.3.2
When ERR_IND is High:
Figure 22 above shows lock being lost while ERR_IND is high. The events are similar to the previous figure but
BKERR remains low when signal lock is lost.
Note: the signal on pin 75 can be inverted by setting the BKERIV bit 6 of OP_CTRL register 96, see page 62.
ERR_IND = 1
MDO[7:0] bus. BKERR goes low when there is no de-scrambler lock or on the first byte
of a packet where uncorrectable bytes are detected. BKERR remains low until error
free MPEG packets are being output on the MDO[7:0] bus.
BKERR remains high when error free MPEG packets are being output on the
Figure 22 - BKERR example when ERR_IND is high.
Zarlink Semiconductor Inc.
MT312
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Design Manual