D63711 NEC, D63711 Datasheet - Page 19

• Manufacturer Part Number: D63711
• Description: Search -----> UPD63711
• Manufacturer: NEC

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[Functional description]
BRK:
T·CNT: Used in combination with the TK bit.
TB:
TK:
FR:
TEH:
TM:
SK:
Controls the half-wave brake circuit.
“1”
“0”
“1”
Switches the tracking filter coefficient bank.
“0”
“1”
This is the track jump trigger and traverse counter load control.
It has two meanings depending on the T.CNT bit. An operation using the TK bit is a one-shot operation
that operates only in the instant this is set to “1”.
Controls the output level polarity when tracking and sled kicking.
“0”
“1”
Controls the error hold function when track jumping.
Selects tracking output when SK = TM = 1.
“0”
“1”
Controls tracking mute.
“0”
“1”
Controls sled kick.
“1”
Half-wave brake circuit is ON
If TK = 1 is set, start a track jump sequencer
Tracking filter bank 0
Tracking filter bank 1
Output the value in the output level register (CRAM 77H to 79H) multiplied by 1
Output the value in the output level register unchanged
Hold reference
Hold previous value
Output the arithmetic result of the tracking filter (normal operation)
Either hold the previous value or hold a reference (data value 00) depending on the TEH bit
specification
Perform sled kick using the value set in CRAM 79H
If TK = 1 is set, load the values of registers 23H and 24H in the traverse counter
Preliminary Product Information S14470EJ1V1PM00
PD63711
19