SAA7392HLM2B View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
'SAA7392HLM2B' PDF : 76 Pages View PDF
Philips Semiconductors
Channel encoder/decoder CDR60
Preliminary specification
SAA7392
7.15 The EFM modulator
This block takes data from the data encoder block and adds the subcode and synchronisation information. This data
stream is modulated using EFM according to the Red Book standard. This data is output serially from the SAA7392, with
the associated EFM clock signal.
7.15.1 EFM PRESET COUNT REGISTER (EFMPRESETCOUNT)
Table 112 EFM Preset Count Register (address 3CH) - WRITE
7
6
5
4
3
−
−
Count.5
Count.4
Count.3
2
Count.2
1
Count.1
0
Count.0
Table 113 Description of EFMPresetCount bits
BIT
7 and 6
5 to 0
SYMBOL
−
Count<5:0>
DESCRIPTION
These 2 bits are reserved.
This field can be used to program a position in an EFM frame for the modulator to start
outputting data.
7.15.2 EFM MODULATOR CONFIGURATION REGISTER (EFMMODCONFIG)
Table 114 EFM Modulator Configuration Register (address 3DH) - WRITE
7
6
5
4
EFMClkSel ModifiedEFM EnableLWRT LWRTOn
3
GateClkOn
2
DataSel.1
1
DataSel.0
0
PanicOn
Table 115 Description of EFMModConfig bits
BIT
SYMBOL
DESCRIPTION
7
EFMClkSel If EFMClkSel = 0, then EFM clock generator outputs normal XEFM frequency clock. If
EFMClkSel = 1, then EFM clock generator outputs double frequency XEFM clock.
6
ModifiedEFM If ModifiedEFM = 0, then normal EFM output. If ModifiedEFM = 1, then all ‘0’ output
symbols are increased in length by one bit.
5
EnableLWRT If EnableLWRT = 0, then LaserOn is off. If EnableLWRT = 1, then LaserOn will be set
when WriteOn1 is turned on.
4
LWRTOn If LWRTOn = 0, then LaserOn determined by EnableLWRT bit. If LWRTOn = 1, then
LaserOn output is enabled unconditionally.
3
GateClkOn If GateClkOn = 0, then XEFM clock is on if WriteOn2 is set. If GateClkOn = 1, then
XEFM clock is gated on unconditionally.
2
DataSel.1 These 2 bits along with the DataSel.2 bit in register EFMCON2 select the output data
1
DataSel.0 format; see Table 119.
0
PanicOn If PanicOn = 1, the Panic input is enabled. LaserOn will be disabled immediately when
the PANIC pin (pin 27) is logic 1.
2000 Mar 21
52
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