SM5906AF datasheet(19/30 Pages) NPC

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NIPPON PRECISION CIRCUITS-19

SM5906AF

– MSWREN

When 1: Write sequence starts

Invalid when MSON is not 1 within the

same 80H command

Invalid when FLAG6=1

Invalid when OVFL=1

If MSWREN = 1 command is issued during

compare-connect operation, MSDCN1 and

MSDCN2 must be set to 0. Write

sequence starts from the point the com-

mand is issued as direct-connect (CD-DA)

sequence.

When 0: Write sequence stops

– MSWACL

When 1: Initializes the write address (WA)

When 0: No operation

– MSRDEN

When 1: Read sequence starts

Does not perform read sequence if

MSON=1. If there is no valid data, read

sequence temporarily stops. But, because

the MSRDEN flag setting is maintained as

is, the sequence automatically re-starts

when valid data appears.

When 0: Read sequence stops

– MSRACL

When 1: Initializes the read address (RA)

When 0: No operation

– MSDCN2, MSDCN1

Refer to compare-connect sequence

After MSWACL and MSRACL, set MSWREN = 1

to start the write sequence. If the start occurs in

direct-connect mode, a noise may be generated.

CDDAMODE

When 1 and 1: 3-pair compare-connect sequence

starts

When 1 and 0: 2-pair compare-connect sequence

starts

When 0 and 1: Direct connect sequence starts

When 0 and 0: Compare-connect sequence stops.

No operation if a compare-connect

sequence is not operating.

VCD, SVCMODE

When 1 and 1: Video CD compare-connect

sequence, checking C2PO, starts (ASH

connect)

When 1 and 0: Video CD compare-connect

sequence, ignoring C2PO, starts (SH con-

nect)

When 0 and 1: Connect sequence, checking sync

data only, starts (S connect)

When 0 and 0: Compare-connect sequence stops.

No operation if a compare-connect

sequence is not operating.

– WAQV

When 1: If a write address (WA) is verified as a

valid at the preceding YBLKCK falling

edge timing, it becomes a valid write

address (VWA).

When 0: No operation

– MSON

When 1: Memory system turns ON and shock-

proof operation starts

When 0: Memory system turns OFF and through-

mode playback starts. Even in through

mode, the CDDAMODE and VCDMODE

settings may become active. VCDMODE

settings should be set if using C2PO.

(see 85H command)

Write command supplementary information

80H (MS command)

81H (Extension I/O port settings)

82H (Extension I/O port output data settings)

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