Functions; Disc Data Configurations; Cd-Rom Data Configurations; Cd-R/Cd-Rw Data Configurations - Toshiba SR-C8002 Product Specification

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
1-Disc
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.
(n-1)
Address
n
Address
n+1
Address
n+2
Address
After Writing
Data are written in CD format synchronizing with ATIP.
TNO Time
TOC Lead-in
0
Min
Block 1
Sec
Block
1 Min
Block 2
Sec
Block
approx.
2
300 k-Blocks
~ ~ ~
Lead out
AA
Figure 5 CD-ROM Disc Data Configuration
Figure 6 CD-R / CD-RW Disc ATIP Data Configuration
SYNC
12 bytes
Header
User Data
2048 bytes in Mode-1
2336 bytes in Mode-2
~
ECC (Mode-1)
~
288 bytes
~
Synchronization
Min
Sec
Frame
CRC
11/24
Minutes
Second(0~59)
4 bytes
Blocks(0~74)
Mode
~
~
(4 bit)
(8 bit)
(8 bit)
(8 bit)
(14 bit)
SR-C8002 Rev.1.0