The values for bytes which this Ecma Standard specifies are related to Recordable disks which are in conformance with this Ecma Standard, viz. +R Format disks. It is expected that other categories of disks will be standardized in future. It is therefore recommended that the following values be used for these other disks. Further possible bit patterns are intended for future standardization.
All standards are subject to revisions, so the information in this Annex can be subject to changes. Therefore it is recommended to check this information against the most recent edition of the indicated standards.
Identification Data
Bit b31 shall be set to
ZERO, indicating CLD format ONE, indicating Zoned format Bit b30 shall be set to
ZERO, indicating pit tracking ONE, indicating groove tracking Bit b29 shall be set to
ZERO if the reflectance is greater than 40 % with a PBS optical system ONE if the reflectance is less than 40 % with a PBS optical system Bit b28 Reserved, shall be set to ZERO
Bits b27 to b26 shall be set to
ZERO ZERO in the Data Zone ZERO ONE in the Lead-in Zone ONE ZERO in the Lead-out Zone ONE ONE in the Middle Zone Bit b25 shall be set to
ZERO, indicating read-only data
ONE, indicating other than read-only data Bit b24 shall be set to
ZERO on Layer 0 of Dual Layer disks ONE on Layer 1 of Dual Layer disks ZERO on Single Layer disks
Physical format information in the ADIP in the Lead-in Zone Byte 0 - Disk Category and Version Number
Bits b7 to b4 shall specify the Disk Category
if set to 0000, they indicate a DVD - Read-Only disk (DVD-RO) if set to 0001, they indicate a DVD Rewritable disk (DVD-RAM) if set to 0010, they indicate a DVD-Recordable disk (DVD-R) if set to 0011, they indicate a DVD Re-recordable disk (DVD-RW) if set to 1001, they indicate a +RW Single Layer disk
if set to 1010, they indicate a +R Single Layer disk if set to 1101, they indicate a +RW Dual Layer disk if set to 1110, they indicate a +R Dual Layer disk
Bits b3 to b0 shall specify the Version Number. Together with b7 to b4 they specify the related document. if b7 to b4 set to 0000 and b3 to b0 set to 0001, they specify ECMA-267/268 (DVD-RO)
if b7 to b4 set to 0001 and b3 to b0 set to 0001, they specify ECMA-272 (DVD-RAM 2,6 Gbytes) if b7 to b4 set to 0001 and b3 to b0 set to 0110, they specify ECMA-330 (DVD-RAM)
if b7 to b4 set to 0010 and b3 to b0 set to 0001, they specify ECMA-279 (DVD-R 3,95 Gbytes) if b7 to b4 set to 0010 and b3 to b0 set to 0101, they specify ECMA-359 (DVD-R)
if b7 to b4 set to 0011 and b3 to b0 set to 0010, they specify ECMA-338 (DVD-RW)
if b7 to b4 set to 1001 and b3 to b0 set to 0001, they specify ECMA-274 (+RW 3,0 Gbytes) if b7 to b4 set to 1001 and b3 to b0 set to 0010, they specify ECMA-337 (+RW)
if b7 to b4 set to 1001 and b3 to b0 set to 0011, they specify ECMA-371 (+RW HS) if b7 to b4 set to 1010 and b3 to b0 set to 0001, they specify ECMA-349 (+R) if b7 to b4 set to 1101 and b3 to b0 set to 0001, they specify ECMA-374 (+RW DL) if b7 to b4 set to 1110 and b3 to b0 set to 0001, they specify ECMA-364 (+R DL)
Byte 1 - Disk size and maximum transfer rate
Bits b7 to b4 shall specify the disk size
if set to 0000, they specify a 120 mm disk if set to 0001, they specify an 80 mm disk Bits b3 to b0 shall specify the maximum transfer rate
if set to 0000, they specify a maximum transfer rate of 2,52 Mbits/s if set to 0001, they specify a maximum transfer rate of 5,04 Mbits/s if set to 0010, they specify a maximum transfer rate of 10,08 Mbits/s if set to 1111, they specify no maximum transfer rate is specified
Byte 2 - Disk structure
Bit b7 shall be set to ZERO.
Bits b6 and b5 shall specify the disk Type
if set to 00, they specify a single recording layer per side if set to 01, they specify two recording layers per side Bit b4 shall specify the track path
if set to ZERO, it specifies PTP on Dual Layer disks or a Single Layer disk, if set to ONE, it specifies OTP on Dual Layer disks
Bits b3 to b0 specify the layer type Bit b3 shall be set to ZERO Bit b2 if set to
ZERO, shall specify that the disk does not contain re-writable Data Zones ONE, shall specify that the disk contains re-writable Data Zones
Bit b1 if set to
ZERO, shall specify that the disk does not contain recordable Data Zones ONE, shall specify that the disk contains recordable Data Zones
Bit b0 if set to
ZERO, shall specify that the disk does not contain embossed Data Zones ONE, shall specify that the disk contains embossed Data Zones
Byte 3 - Recording density
Bits b7 to b4 shall specify the average Channel bit length if set to 0000, they specify 0,133 μm if set to 0001, they specify 0,147 μm
if set to 0010, they indicate that this average length is in the range 0,205 μm to 0,218 μm if set to 1000, they specify 0,176 37 μm
Bits b3 to b0 shall specify the average track pitch
if set to 0000, they indicate a track pitch of 0,74 μm if set to 0001, they indicate a track pitch of 0,80 μm.