Toshiba SR-C8002 - Manual (Page 16)

11/24 SR-C8002 Rev.1.0
5.Functions
5.1. Disc Data Configurations
5.1.1. CD-ROM Data Configurations
Figure 5 shows how the data is structured in program units
1 block=1/75 s
Time TNO
TOC 0 Lead-in
Min
Sec
Block
Block 1
Min
Sec
Block
1
Block 2
2
approx.
300 k-Blocks
AA Lead out
1-Disc
Header
Minutes
Second(0~59)
Blocks(0~74)
Mode
4 bytes
User Data
2048 bytes in Mode-1
2336 bytes in Mode-2
ECC (Mode-1)
288 bytes
SYNC
12 bytes
~ ~ ~ ~
~ ~
~ ~
Figure 5 CD-ROM Disc Data Configuration
5.1.2. CD-R / CD-RW Data Configurations
Before writing
CD-R / CD-RW disc contains time-code information called ATIP.
ATIP is abbreviation of "Absolute Time In Pre-groove" in the wobbling groove by modulating
the carrier frequency.
(Address information is pre-formatted to ATIP on the CD-R / CD-RW disc and method for the
guide groove to wobble by FM modulation.)
Figure 6 shows the composition of ATIP.
Address
(n-1)
n
n+1
n+2
Address
Address
Address
Synchronization
Min
Sec
Frame
CRC
(4 bit)
(8 bit)
(8 bit)
(8 bit)
(14 bit)
Figure 6 CD-R / CD-RW Disc ATIP Data Configuration
After Writing
Data are written in CD format synchronizing with ATIP.