< 9/19>CD communication I/F (CD part)/data specifications

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★ PROGRAMMER'S GUIDE ★ CD communication I/F (CD part)

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CD Communication Interface User's Manual (CD Part)/Reference

Data details

7.2.6 Data types

one View table Title data specifications Data CD status information Data Name CdcStat No 6.1

Together, the CD block status and CD report are referred to as CD status information.

(1)CD status information……CDC_GetCurStat, CDC_GetLastStat, CDC_GetPeriStat functions

CdcStat *stat

access macro	mold	explanation
CDC_STAT_STATUS(stat)	Uint8	Status (e.g. status code)
CDC_STAT_FLGREP(stat)	Uint8	CD flag and repeat count in CD report
CDC_STAT_CTLADR(stat)	Uint8	CONTROL/ADR byte of CD report
CDC_STAT_TNO(stat)	Uint8	CD report track number (binary value)
CDC_STAT_IDX (stat)	Uint8	CD report index number (binary value)
CDC_STAT_FAD(stat)	Uint32	CD report frame address

(2) Related macros

macro name	explanation
CDC_GET_STC(stat)	Get status code from CD status information
CDC_GET_REPEAT(stat)	Get repeat count from CD status information

one View table Title data specifications Data Hardware information Data Name CdcHw No 6.2

(1) Hardware information……CDC_GetHwlnfo function

CdcHw *hw

access macro	mold	explanation
CDC_HW_HFLAG(hw)	Uint8	hardware flag
CDC_HW_VER(hw)	Uint8	CD block version information
CDC_HW_MPVER(hw)	Uint8	MPEG version information ・ If 0: MPEG cannot be used* ・ If other than 0: MPEG can be used
CDC_HW_DRV(hw)	Uint8	CD drive information
CDC_HW_REV(hw)	Uint8	CD block revision information

*It is necessary to perform an MPEG check of the service routine in the BOOT ROM.

(2)Hardware flag

bit  7  6  5  4  3  2  1  0
    [ ][-][-][-][-][-][ ][-]
     |                 |   
     |                 |
     |                 +------- CDC_HFLAG_MPEG  1:MPEG cartridge installed
     |
     +------------------------- CDC_HFLAG_HERR  1:Hardware error occurred


 one
 View
 table  Title
 data specifications  Data
 CD position parameter (1/2)  Data Name
 CdcPos  No
 6.3


 Used to specify the CD playback range (start position, end position) and seek position.
 (1)Position type
 Positional parameters can be specified as default values, frame addresses, tracks/indexes, or unchanged. Specify which one to select using the constant (position type) below.

 constant name  explanation
 CDC_PTYPE_DFL  Default value specification_When playing a CD: Indicates the beginning/end of the disc
 When seeking: represents the home position
 CDC_PTYPE_FAD  Frame addressing
 CDC_PTYPE_TNO  Track/index specification
 CDC_PTYPE_NOCHG  Specify unchanged (do not change the setting value)

 Disc start: FAD = 150 (96H) position (2 seconds 0 frames in absolute time)
 End of disc: FAD = lead-out start frame address (TOC information) - 1 position
 (2) Positional parameter……CDC_CdSeek function
 CdcPos *pos

 access macro  mold  explanation
 CDC_POS_PTYPE(pos)  Sint32  location type
 CDC_POS_FAD(pos)  Sint32  Frame address, FAD sector number
 CDC_POS_TNO(pos)  Uint8  track number
 CDC_POS_IDX(pos)  Uint8  index number


 (3) Setting method

 Specifying default valuesCdcPosposwk, *pos = &poswk;
CDC_POS_PTYPE(pos) = CDC_PTYPE_DFL;

Frame addressingCdcPosposwk, *pos = &poswk;
CDC_POS_PTYPE(pos) = CDC_PTYPE_FAD;
CDC_POS_FAD(pos) = fad; /* Frame address */
For the end position, specify the number of sectors from the start FAD (FAD sector number).
 Track/index specificationCdcPosposwk, *pos = &poswk;
CDC_POS_PTYPE(pos) = CDC_PTYPE_TNO;
CDC_POS_TNO(pos) = tno; /* Track number */
CDC_POS_IDX(pos) = x; /* Index number */

Unchanged designationCdcPosposwk, *pos = &poswk;
CDC_POS_PTYPE(pos) = CDC_PTYPE_NOCHG;


(4) Exceptions to frame addresses
 Depending on the conditions, frame addresses are interpreted as follows:

 conditions  Start position, seek position  End position
 F.A.D.＜ beginning of disc  FAD = beginning of disk (150)  FAD=disc start-1
 (The number of FAD sectors is 0)
 F.A.D.＞ disc last  FAD=end of disk +1
 (equal to leadout)  FAD=end of disk


 Relationship between start and end positions  : End FAD = Start FAD + Number of FAD sectors - 1
 Starting FAD＜ For 150  : End FAD = 150 + Number of FAD sectors - 1


 The content of the playback range that is retained is the start FAD and end FAD.
 (5) Track/index exceptions
 Depending on the conditions, the track/index is interpreted as follows:

 conditions  Start position, seek position  End position
 TNO=0
 (default value for tracks)  TNO = Disc first track  TNO=last track of disc
 X=0
 (default value of index)  X=1  X=99 (63H)
 TNO＜ Disc first track  TNO = Disc first track
 X=1 (same as X=0)  TNO = Disc first track
 X=99 (same as X=0)
 TNO＞ disc final track  TNO=last track of disc
 X=1 (same as X=0)  TNO=last track of disc
 X=99 (same as X=0)
 X does not exist  (from next track)  (until the end of the track)

 TNO: Track number, X: Index number
 X=0 means specifying only the track. (Track start/last index)

 TNO=X=0 is the default value for positional parameters.

 (Start position: beginning of disk, end position: end of disk, seek position: home position)
 (6) Exceptions to playback range
 End position＜ If it is the start position, the playback range will be maintained, but the CD will not be played.

 (For both frame address specification and track/index specification)
 (7) Meaning of special designations

 Specifying a default value for the seek position: Used as a stop command. (seek to home position)
 Specify the seek position unchanged: Use as a pause command.
 Specifying the playback range as unchanged: Used to release the pause (resume CD playback). 



 one
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 table  Title
 data specifications  Data
 CD playback parameters  Data Name
 CdcPly  No
 6.4


 Used to specify the playback range and playback mode when playing a CD.
 (1) Playback mode
 When playing a CD, specify the maximum number of repeats for the playback section and the pickup position (playback position).

bit  7  6  5  4  3  2  1  0
    [ ][          ]    Default value (initial value): 00H
     |   Maximum number of repeats (valid range of the specified number of times is the lower 4 bits)
     |
     |     00H   → No repeat (plays only once)
     |   01H～0EH→ Specified number of repeats (1 to 14 repeats)
     |     0FH   → Infinite repeat
     |     7FH   → Maximum repeat count does not change
     |
     +------------------------- 0: Do not change pickup position (play from current position)
                                1: Move the pickup to the start position (play from the start position)


constant name  explanation
 CDC_PM_DFL  Default playback mode
 (No repeat, move pickup to start position)
 CDC_PM_REP_NOCHG  Do not change the maximum number of repeats
 CDC_PM_PIC_NOCHG  Do not change pickup position
 CDC_PM_NOCHG  Playback mode (maximum repeat count, pickup position)
 do not change


 《If you do not change the pickup position》
 You can start playback from any position by seeking and then executing.〈 PLAY〉 If you run it during playback, you can change only the playback range and maximum repeat count without interrupting CD playback.

 If the current position is outside the playback range as a result of execution, repeat processing will be performed.
 (2) Playback parameters……CDC_CdPlay function
 CdcPly *ply

 access macro  mold  explanation
 CDC_PLY_START (ply)  CdcPos  Playback start position parameter
 CDC_PLY_STYPE (ply)  Sint32  Starting position type
 CDC_PLY_SFAD (ply)  Sint32  Start position frame address
 CDC_PLY_STNO (ply)  Uint8  Start position track number
 CDC_PLY_SIDX (ply)  Uint8  Starting position index number
 CDC_PLY_END (ply)  CdcPos  Playback end position parameter
 CDC_PLY_ETYPE (ply)  Sint32  End position type
 CDC_PLY_EFAS (ply)  Sint32  End position frame address number of sectors
 CDC_PLY_ETNO(ply)  Uint8  End position track number
 CDC_PLY_EIDX (ply)  Uint8  End position index number
 CDC_PLY_PMODE (ply)  Uint8  Playback mode (repeat specification, pickup movement)

 (3) How to set playback parameters
 The playback parameters specify the playback range and playback mode. The playback range is specified by a combination of position parameters for the start position and end position.

 Track specification and frame address specification cannot be combined in the playback range.

 In that case, return REJECT. All other playback range combinations are possible.
 All combinations of playback range and playback mode are possible.
 The playback range and maximum repeat count are retained within the CD block and remain in effect until reset.
 Default value: Disc start to disc end, no repeat, move pickup

 A setting example is shown below.

 NO.  How to play  starting position  End position  remarks
 1  track designation  tno1,x1  tno2,x2 
 2  Frame addressing  fad  fasnum  Note 1
 3  Play from the beginning of the disc  CDC_PTYPE_DFL  tno2,x2 
 fasnum
 4  Play until the end of the disc  tno1,x1  CDC_PTYPE_DFL 
 fad
 5  Do not change end position
 (change only the starting position)  tno1,x1  CDC_PTYPE_NOCHG  Note 2
 fad
 6  Do not change starting position
 (change only the end position)  CDC_PTYPE_NOCHG  tno2,x2  Note 2
 fasnum
 7  Change playback parameters
 CD playback resumes without
 (Cancel pause)  CDC_PTYPE_NOCHG  CDC_PTYPE_NOCHG  into play mode
 CDC_PM_NOCHG
 Specify.

 "Notation"

 fad  :Frame address
 fasnum  : Number of frame address sectors
 tno1  :Start track number
 tno2  :Ending track number
 x1  :Start index number
 x2  :Ending index number

 Note 1: fad+fasnum-1 is retained as the end position.
 Note 2: Even if one of them is unchanged, combinations of track and frame address specifications are not possible.
 (4) Exceptions to playback range
 End position＜ If it is at the start position, it will not be played. As well as outside the playback range,〈 PAUSE〉 state.

 However, the playback range is retained and the playback mode is also valid.


 one
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 table  Title
 data specifications  Data
 subheader condition  Data Name
 CdcSubh  No
 6.5


 Used when setting/obtaining subheader conditions for aperture.
 (1) Subheader conditions……CDC_SetFiltSubh, CDC_GetFiltSubh functions
 *subh


 access macro  mold  explanation
 CDC_SUBH_FN (subh)  Uint8  file number
 CDC_SUBH_CN (subh)  Uint8  channel number
 CDC_SUBH_SMMSK (subh)  Uint8  Submode mask pattern
 CDC_SUBH_SMVAL (subh)  Uint8  Submode comparison value
 CDC_SUBH_CIMSK (subh)  Uint8  Coding information mask pattern
 CDC_SUBH_CIVAL (subh)  Uint8  Coding information comparison value

・Mask pattern: Comparison target bit pattern
・Comparison position: Comparison value of bits specified by mask pattern
 After each submode and coding information are ANDed with the mask pattern, it is determined whether they are equal to the comparison value.

 conditional expression  (Submode & SMMSK)=SMVAL

 (Coding information & CIMSK)=CIVAL

 (2) Submode
bit  7  6  5  4  3  2  1  0
    [ ][ ][ ][ ][ ][ ][ ][ ]
     |  |  |  |  |  |  |  |
     |  |  |  |  |  |  |  +---- CDC_SM_EOR     1:Last sector of record
     |  |  |  |  |  |  +------- CDC_SM_VIDEO   1:Video sector
     |  |  |  |  |  +---------- CDC_SM_AUDIO   1:Audio sector
     |  |  |  |  +------------- CDC_SM_DATA    1:Data sector
     |  |  |  +---------------- CDC_SM_TRIG    1:Trigger ON
     |  |  +------------------- CDC_SM_FORM    1:Form2   0:Form1
     |  +---------------------- CDC_SM_RT      1:Real-time sector
     +------------------------- CDC_SM_EOF     1:Last sector of file


 one
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 table  Title
 data specifications  Data
 Sector information  Data Name
 CdcSct  No
 6.6


 (1) Sector information……CDC_GetSctInfo function
 CdcSct *sct

 access macro  mold  explanation
 CDC_SCT_FAD (sct)  Sint32  frame address
 CDC_SCT_FN(sct)  Uint8  file number
 CDC_SCT_CN (sct)  Uint8  channel number
 CDC_SCT_SM (sct)  Uint8  submode
 CDC_SCT_CI (sct)  Uint8  Coding information 




 one
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 table  Title
 data specifications  Data
 File information  Data Name
 CdcFile  No
 6.7


 (1) File information……CDC_TgetFileInfo function
 CdcFile *file

 access macro  mold  explanation
 CDC_FILE_FAD(file)  Sint32  File first frame address
 CDC_FILE_SIZE(file)  Sint32  File size (number of bytes) *1
 CDC_FILE_UNIT(file)  Uint8  file unit size
 CDC_FILE_GAP(file)  Uint8  gap size
 CDC_FILE_FN(file)  Uint8  File number *2
 CDC_FILE_ATR(file)  Uint8  file attributes

 *1: Represents the net file size, not including gap sectors during interleaving.
 *2: If there is no system information for the directory record, the file number will be 0.
 (2)File attributes
bit  7  6  5  4  3  2  1  0
    [ ][ ][ ][ ][ ][-][ ][-]
     |  |  |  |  |     |
     |  |  |  |  |     |
     |  |  |  |  |     +------- CDC_ATR_DIRFG   1:Directory *3
     |  |  |  |  |
     |  |  |  |  +------------- CDC_ATR_FORM1   1:Includes Form1 sector *4
     |  |  |  +---------------- CDC_ATR_FORM2   1:Includes Form2 sector *4
     |  |  +------------------- CDC_ATR_INTLV   1:Includes interleaved sectors *4
     |  +---------------------- CDC_ATR_CDDA    1:CD-DA file *4
     +------------------------- CDC_ATR_DIRXA   1:Directory file *4


 *3: Bit1 is the directory bit of the file flag in the directory record.
 This is valid when there is no directory record system information.
 (If there is system information, bit 7 will be prioritized to determine the directory)
 *4: Bits 3 to 7 are attribute information compliant with the CD-ROM XA standard.
 If there is no system information, bits 3 to 7 are all set to 0.

constant name	explanation
CDC_PTYPE_DFL	Default value specification_When playing a CD: Indicates the beginning/end of the disc When seeking: represents the home position
CDC_PTYPE_FAD	Frame addressing
CDC_PTYPE_TNO	Track/index specification
CDC_PTYPE_NOCHG	Specify unchanged (do not change the setting value)

access macro	mold	explanation
CDC_POS_PTYPE(pos)	Sint32	location type
CDC_POS_FAD(pos)	Sint32	Frame address, FAD sector number
CDC_POS_TNO(pos)	Uint8	track number
CDC_POS_IDX(pos)	Uint8	index number

conditions	Start position, seek position	End position
F.A.D.＜ beginning of disc	FAD = beginning of disk (150)	FAD=disc start-1 (The number of FAD sectors is 0)
F.A.D.＞ disc last	FAD=end of disk +1 (equal to leadout)	FAD=end of disk

conditions	Start position, seek position	End position
TNO=0 (default value for tracks)	TNO = Disc first track	TNO=last track of disc
X=0 (default value of index)	X=1	X=99 (63H)
TNO＜ Disc first track	TNO = Disc first track X=1 (same as X=0)	TNO = Disc first track X=99 (same as X=0)
TNO＞ disc final track	TNO=last track of disc X=1 (same as X=0)	TNO=last track of disc X=99 (same as X=0)
X does not exist	(from next track)	(until the end of the track)

constant name	explanation
CDC_PM_DFL	Default playback mode (No repeat, move pickup to start position)
CDC_PM_REP_NOCHG	Do not change the maximum number of repeats
CDC_PM_PIC_NOCHG	Do not change pickup position
CDC_PM_NOCHG	Playback mode (maximum repeat count, pickup position) do not change

access macro	mold	explanation
CDC_PLY_START (ply)	CdcPos	Playback start position parameter
	CDC_PLY_STYPE (ply)	Sint32	Starting position type
	CDC_PLY_SFAD (ply)	Sint32	Start position frame address
	CDC_PLY_STNO (ply)	Uint8	Start position track number
	CDC_PLY_SIDX (ply)	Uint8	Starting position index number
CDC_PLY_END (ply)	CdcPos	Playback end position parameter
	CDC_PLY_ETYPE (ply)	Sint32	End position type
	CDC_PLY_EFAS (ply)	Sint32	End position frame address number of sectors
	CDC_PLY_ETNO(ply)	Uint8	End position track number
	CDC_PLY_EIDX (ply)	Uint8	End position index number
CDC_PLY_PMODE (ply)	Uint8	Playback mode (repeat specification, pickup movement)

NO.	How to play	starting position	End position	remarks
1	track designation	tno1,x1	tno2,x2
2	Frame addressing	fad	fasnum	Note 1
3	Play from the beginning of the disc	CDC_PTYPE_DFL	tno2,x2
fasnum
4	Play until the end of the disc	tno1,x1	CDC_PTYPE_DFL
fad
5	Do not change end position (change only the starting position)	tno1,x1	CDC_PTYPE_NOCHG	Note 2
fad
6	Do not change starting position (change only the end position)	CDC_PTYPE_NOCHG	tno2,x2	Note 2
fasnum
7	Change playback parameters CD playback resumes without (Cancel pause)	CDC_PTYPE_NOCHG	CDC_PTYPE_NOCHG	into play mode CDC_PM_NOCHG Specify.

access macro	mold	explanation
CDC_SUBH_FN (subh)	Uint8	file number
CDC_SUBH_CN (subh)	Uint8	channel number
CDC_SUBH_SMMSK (subh)	Uint8	Submode mask pattern
CDC_SUBH_SMVAL (subh)	Uint8	Submode comparison value
CDC_SUBH_CIMSK (subh)	Uint8	Coding information mask pattern
CDC_SUBH_CIVAL (subh)	Uint8	Coding information comparison value

access macro	mold	explanation
CDC_SCT_FAD (sct)	Sint32	frame address
CDC_SCT_FN(sct)	Uint8	file number
CDC_SCT_CN (sct)	Uint8	channel number
CDC_SCT_SM (sct)	Uint8	submode
CDC_SCT_CI (sct)	Uint8	Coding information

access macro	mold	explanation
CDC_FILE_FAD(file)	Sint32	File first frame address
CDC_FILE_SIZE(file)	Sint32	File size (number of bytes) *1
CDC_FILE_UNIT(file)	Uint8	file unit size
CDC_FILE_GAP(file)	Uint8	gap size
CDC_FILE_FN(file)	Uint8	File number *2
CDC_FILE_ATR(file)	Uint8	file attributes

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★ PROGRAMMER'S GUIDE ★ CD communication I/F (CD part)

Relationship between start and end positions	: End FAD = Start FAD + Number of FAD sectors - 1
Starting FAD＜ For 150	: End FAD = 150 + Number of FAD sectors - 1

fad	:Frame address
fasnum	: Number of frame address sectors
tno1	:Start track number
tno2	:Ending track number
x1	:Start index number
x2	:Ending index number