Data details

7.2.1 Basic data

List

Title Data specifications

Data Basic data

Data Name

No 1.0

(1) Basic data type

Model name	explanation
Uint8	Unsigned 1-byte integer
Sint8	Signed 1-byte integer
Uint16	Unsigned 2-byte integer
Sint16	Signed 2-byte integer
Uint32	Unsigned 4-byte integer
Sint32	Signed 4-byte integer
Boo1	Logical type 4-byte integer (takes a logical constant as a value)

(2) Logical constant

Used as a Boolean value.

Constant name	value	explanation
FALSE TRUE	0 1	Represents a false logical value. Represents the true value of a logical value.
OFF OFF ON	0 1	Indicates switch off (false). Indicates switch-on (true).

(3) Other

Constant name	value	explanation
NULL	((Void *) 0)	NULL pointer

7.2.2 Constant

List

Title Data specifications

Data Constant (1/2)

Data Name Constant

No 2.0

(1) Bit names related to interrupt factor registers (HIRQREQ, HIRQMSK)

bit 7 6 5 4 3 2 1 0
    [] [] [] [] [] [] [] []
     | | | | | | | |
     | | | | | | | + ---- CDC_HIRQ_CMOK 1: Command can be issued | | | | | | + ------- CDC_HIRQ_DRDY 1: Data transfer ready | | | | | + ----- ----- CDC_HIRQ_CSCT 1: 1 sector read completed | | | | + ------------- CDC_HIRQ_BFUL 1: CD buffer full | | | + ---------- ------ CDC_HIRQ_PEND 1: End of CD playback | | + ------------------ CDC_HIRQ_DCHG 1: Disk replacement occurs | + ------- --------------- CDC_HIRQ_ESEL 1: End of selector setting process + ------------------------- CDC_HIRQ_EHST 1: End of host input / output processing bit 15 14 13 12 11 10 9 8
    [-] [-] [] [] [] [] [] []
           | | | | | |
           | | | | | + ---- CDC_HIRQ_ECPY 1: End of copy / move processing | | | | + ------- CDC_HIRQ_EFLS 1: End of file system processing | | | + ------- --- CDC_HIRQ_SCDQ 1: Subcode Q update completed | | + ------------- CDC_HIRQ_MPED 1: MPEG related processing completed | + ------------ ---- CDC_HIRQ_MPCM 1: End of MPEG malfunction section + ------------------- CDC_HIRQ_MPST 1: Notification of MPEG interrupt status

(2) Error code

Constant name	explanation
CDC_ERR_OK	The function completed normally.
CDC_ERR_CMDBUSY	When issuing a command, the command end flag is not 1. Target: All functions that check the command end flag
CDC_ERR_CMDNG	The CMOK flag is not set to 1 when the command is issued. Target: All functions that issue commands
CDC_ERR_TMOUT	Timed out. (Waiting for response, waiting for data transfer preparation) Target: All functions that issue commands CDC_GetPeriStat function, CDC_DataReady function
CDC_ERR_PUT	A free sector could not be secured while waiting for data transfer preparation by writing sector data. Target: CDC_DataReady function after executing the CDC_PutSctData function
CDC_ERR_REJECT	The response to the command is now REJECT. Target: All functions that issue commands
CDC_ERR_WAIT	The response to the command is now WAIT. Target: All functions that issue commands
CDC_ERR_TRNS	The data transfer size is abnormal. Target: Functions that transfer data internally (functions that start with CDC_Tget)
CDC_ERR_PERI	The periodic response could not be obtained. Target: CDC_GetPeriStat function

(3) Special specification of sector range (sector position and number of sectors) of buffer partition

Constant name	explanation
CDC_SPOS_END	Indicates the sector position at the end of the partition. Same as the specification of (Number of sectors in partition-1).
CDC_SNUM_END	Indicates the number of sectors from the specified sector position SP to the end of the partition. Same as the specification of (Number of sectors in partition-SP).

This is valid for the following buffer partition functions.

CDC_CalActSiz

CDC_GetSctInfo

CDC_ExeFadSearch

CDC_GetSctData

CDC_DelSctData

CDC_GetdelSctData

CDC_CopySctData

CDC_MoveSctData

caution

When the number of sectors in a partition is 0, WAIT is always returned regardless of the specification. Before executing these functions, be sure to execute Get the number of sectors in the buffer partition (CDC_GetSctNum) to make sure that the number of sectors is not 0.

(4) Other special designations

Constant name	explanation
CDC_PARA_DFL	Specify default value of setting parameter (0) It can be used when the default value is specified as 0.
CDC_PARA_NOCHG	Unchanged specification of setting parameters (-1) It can be used when unchanged is specified by FFH, FFFFH, most significant bit = 1, etc.
CDC_NUL_SEL	Special value of selector number (aperture number, buffer partition number)
CDC_NUL_FID	File identifier special value

7.2.3 TOC information / session information

List

Title Data specifications

Data TOC information / session information

Data Name TOC / SES

No 3.0

(1) TOC information …… CDC_TgetToc function

(2) Session information …… CDC_GetSes function

7.2.4 Subcode information

List

Title Data specifications

Data Subcode information

Data Name Subcode

No 4.0

(1) Subcode Q information …… CDC_TgetScdQch function

(a) When Adr = 1

byte	1	2	3	4	5	6	7	8	9	Ten
	Ctrl Adr	TNO	X	P_FAD			00	Q_FAD			CRC

Ctrl Adr	: CONTROL / ADR bytes
TNO	: Track number (binary value, not BCD)
X	: Index number (binary value, not BCD)
P_FAD	: In-track time (frame address format with 0 at the beginning of the track)
Q_FAD	: Absolute time (frame address format with 00:00:00 as 0)

The content of each status is the same as for the CD report.

The values for each TNO are shown in the following table.

(Lead-in and lead-out can be obtained in multiple sessions)

TNO	X	P_FAD
01H ~ 63H (1 ~ 99)	01H ~ 63H	Progress FAD in the track
AAH (lead out)	01H ~ 63H	Progress FAD in the track
00H (lead-in)	01H ~ 63H, A0H, A1H, A2H	000000H

The lead-in of the first session is Q_FAD = 000000H.

(Usually not available)

(b) Others (ADR ≠ 1):

The raw value of subcode Q (10 bytes other than CRC)

(2) Subcode R to W information …… CDC_TgetScdRwch function

Subcodes R to W are decoded in units of 1 pack (24 bytes = 12 words).
The CD block has a pack buffer for 24 packs (6 packets) inside.

7.2.5 Status and reports

List

Title Data specifications

Data Status and reports

Data Name Status & CD Report

No 5.0

(1) Response format

The response consists of a Status and a Report. Whether to return a CD Report as a report depends on the command. Regular responses always return a CD report.
The combination of status and CD report is called CD status information.

(2) Status

When the status is FFH, it indicates REJECT (command invalid). The status code is always valid except during REJECT. Also, bit5 to bit7 are exclusive and cannot be 1 at the same time.

bit 7 6 5 4 3 2 1 0
    [] [] [] [-] []
     | | | Status code (CD drive status)
     | | |
     | | + ----- CDC_ST_PERI 1: Periodic response 0: Response to command | + --------- CDC_ST_TRNS 1: Data transfer request 0: No request + --------- --CDC_ST_WAIT 1: WAIT (execution pending) 0: ACK (command normal reception)

(a) Status code (CD drive status)

Constant name	value	Status	explanation
CDC_ST_BUSY	00H	<BUSY>	During state transition
CDC_ST_PAUSE	01H	<PAUSE>	Pausing (pause)
CDC_ST_STANDBY	02H	<STANDBY>	Standby (drive stopped state)
CDC_ST_PLAY	03H	<PLAY>	Playing a CD
CDC_ST_SEEK	04H	<SEEK>	Seeking
CDC_ST_SCAN	05H	<SCAN>	Scan playback
CDC_ST_OPEN	06H	<OPEN>	The tray is open
CDC_ST_NODISC	07H	<NODISC>	No disk
CDC_ST_RETRY	08H	<RETRY>	Read retry processing in progress
CDC_ST_ERROR	09H	<ERROR>	Read data error occurred
CDC_ST_FATAL	0AH	<FATAL>	A fatal error has occurred

(3) CD report

byte	1		2	3	4	5	6	7
CD Report	Flg	Rep Cnt	Ctrl Adr	TNO	X	FAD

Flg	: CD flag (upper 4 bits) …… Valid in <PLAY> state
RepCnt	: Number of repeats (lower 4 bits) …… Notification range is 0H to EH

bit 7 6 5 4 3 2 1 0
    [] [-] [-] [-] []
     | Repeat count |
     + ----------- CDC_CDFLG_ROM 1: CD-ROM decoding 0: CD-DA, seek, scan, etc.

Ctrl Adr	: CONTROL / ADR bytes
TNO	: Track number (binary value, not BCD) Based on subcode Q
X	: Index number (binary value, not BCD)
FAD	: Frame address (based on header information for CD-ROM, otherwise based on subcode Q)

(4) CD report contents in each status

The CD drive status and CD report contents are shown below. The sequence of FFH means an invalid value. (CD report at REJECT is invalid, valid at WAIT.)

Status	CD flag / repeat	CONTROL / ADR	Track number	Index number	Frame address
<BUSY>	○ / FFH	○ / FFH	○ / FFH	○ / FFH	○ / FFFFFFH
<PAUSE>	○	○	○	○	○
<STANDBY>	Value at the time of pause	Value at the time of pause	Value at the time of pause	Value at the time of pause	Value at the time of pause
At seek home	FFH	FFH	FFH	FFH	FFFFFFH
<PLAY>	○	○	○	○	○
<SEEK>	○	Target position	Target position	Target position	Target position
<SCAN>	○	○	○	○	○
<OPEN>	FFH	FFH	FFH	FFH	FFFFFFH
<NODISC>	FFH	FFH	FFH	FFH	FFFFFFH
<RETRY>	○	○	○	○	○
<ERROR>	FFH	FFH	FFH	FFH	FFFFFFH
<FATAL>	Indefinite	Indefinite	Indefinite	Indefinite	Indefinite

○: Current value Seek Home: Seek (stop) to the home position

When the standby time elapses and the status changes from <PAUSE> to <STANDBY>, the value at the time of pause is retained.

(5) When the content of the CD report is invalid

1. The previous value is retained for the number of repeats. When it transitions to another state, it returns to the retained value.

2. When transitioning from seek home to the <PAUSE> state, it moves to the beginning of the disk (FAD = 150).

3. When <ERROR>, the previous value is retained. When it transitions to the state, it returns to the retained value.

4. In the case of state transition, on the way The state may return an invalid value.
   Be sure to confirm the status other than <BUSY> before referring to the contents of the CD report.