5. Functions

5.1.CD-ROM Data Configurations

Figure 6 shows how the data is structured in program units. 1block=1/75 s

1-Disc

 

TNO

Time

 

 

 

0

TOC

Lead-in

 

 

Min

 

 

 

 

Sec

Block 1

 

1

Block

 

 

 

Min

 

 

 

 

 

 

 

 

Sec

Block 2

 

 

Block

 

 

 

 

2approx. 300k-

Blocks

SYNC

 

12 bytes

 

 

 

Header

4 bytes

 

User Data

 

2048 bytes in Mode-1

 

2336 bytes in Mode-2

 

 

 

 

 

~

~

 

 

ECC(Mode-1)

 

 

~288 bytes

~

 

 

 

 

 

Minutes

Second(0~59)

Blocks(0~74)

Mode

~ ~

~

~

 

AA

Lead out

 

 

 

 

 

 

 

 

 

Figure 6 CD-ROM Data Configuration

5.2.Power ON/OFF Timing

Figure 7 shows the initialization.

Power ON

 

Max 500 ms

 

 

System

 

 

"Command" Receivable

Max 2 s

 

 

Initialization

 

 

Focus Serch

Max 3.5 s

 

 

 

Spindle ON

 

 

 

Learning

 

Typ.13 s, Max 16 s

 

 

 

(Single Session Disc)

 

Idle

 

 

 

"TEST UNIT READY"

 

Any Command Sendable

"Read-Command"Acceptable

Command

 

"Check Condition"Status

"Good"Status

Correspondence

Can't send

 

 

 

COMMAND

Figure 7 Initialization Sequence

12/27

XM-7002B Rev.1.0

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Image 16
Toshiba XM-7002B specifications 12/27, Functions