function specification

Describe the function specifications of the CD communication interface.

(1)

In the format diagram, reserved areas are indicated with a "-". Be sure to specify 0 for the reserved area.

(2) Initial values of parameters

The initial values of parameters held by a CD block are equal to the default values specified by the host, unless otherwise specified.

(3) Maintaining CD status information (status and CD report)

The CD communication interface maintains the status and CD report when a CD block command is issued. Information from periodic responses is not retained. The initial value of the retained contents is all 0.
The following symbols indicate functions that update the retention status/CD report.

However, nothing is updated in the event of an error (when the error code is other than CDC_ERR_OK).

(4) Data transfer inside the function

Among functions that obtain information, those that transfer data within the function are written as Tget. The data transfer method is software transfer using the CPU.

[Example] Acquisition of TOC information (CDC_TgetToc)

These functions internally call the following functions:

• Waiting for data transfer to start (CDC_DataReady)
• End of data transfer (CDC_DataEnd)

(5) Command end flag (in interrupt factor register)

If there is a related command end flag, enter it in the end flag field.

[Example] End flag ESEL flag

These functions check and clear the command termination flag to 0 when issuing a command. If it cannot be issued, a CDC_ERR_CMDBUSY error will occur. Exceptionally, there are cases where the command end flag is only cleared to 0 or checked. (Exclusive processing for issuing commands)
When the processing corresponding to the issued command is completed, the command end flag becomes 1. However, please note that this value does not become 1 during REJECT and WAIT.
For details, please refer to " 3.2 Communication method ".

8.1 Function list

Table 8.1 lists the functions of the CD communication interface.

Table 8.1 List of CD communication interface functions

function		function name	number
Common to CD block			1.0
	Get current CD status information	CDC_GetCurStat	1.1
	Get the previous CD status information	CDC_GetLastStat	1.2
	Obtaining periodic CD status information	CDC_GetPeriStat	1.3
	Get hardware information	CDC_GetHwInfo	1.4
	Acquisition of TOC information	CDC_TgetToc	1.5
	Get session information	CDC_GetSes	1.6
	CD block initialization	CDC_CdInit	1.7
	opening the tray	CDC_CdOpen	1.8
	Waiting for data transfer preparation	CDC_DataReady	1.9
	End of data transfer	CDC_DataEnd	1.10

function		function name	number
CD drive			2.0
	CD playback	CDC_CdPlay	2.1
	Seek playback position	CDC_CdSeek	2.2
	scan playback	CDC_CdScan	2.3

function		function name	number
sub code			3.0
	Get subcode Q	CDC_TgetScdQch	3.1
	Obtaining subcodes R to W	CDC_TgetScdRwch	3.2

function		function name	number
CD-ROM device			4.0
	Setting the CD device connection destination	CDC_CdSetCon	4.1
	Obtaining the connection destination of the CD device	CDC_CdGetCon	4.2
	Obtaining the buffer section of the last read sector	CDC_CdGetLastBuf	4.3

function		function name	number
selector			5.0
	Setting the aperture frame address range	CDC_SetFiltRange	5.1
	Obtaining the aperture frame address range	CDC_GetFiltRange	5.2
	Setting aperture subheader conditions	CDC_SetFiltSubh	5.3
	Get aperture subheader conditions	CDC_GetFiltSubh	5.4
	Setting the aperture mode	CDC_SetFiltMode	5.5
	Get aperture mode	CDC_GetFiltMode	5.6
	Setting the aperture connection destination	CDC_SetFiltCon	5.7
	Get the aperture connection destination	CDC_GetFiltCon	5.8
	Reset selector (aperture, section)	CDC_ResetSelector	5.9

function		function name	number
Buffer information			6.0
	Get CD buffer size	CDC_GetBufSiz	6.1
	Obtaining the number of sectors in a buffer partition	CDC_GetSctNum	6.2
	Calculating actual data size	CDC_CalActSiz	6.3
	Obtaining actual data size	CDC_GetActSiz	6.4
	Get sector information	CDC_GetSctInfo	6.5
	Executing frame address search	CDC_ExeFadSearch	6.6
	Obtain frame address search results	CDC_GetFadSearch	6.7

function		function name	number
Buffer input/output			7.0
	Setting sector length	CDC_SetSctLen	7.1
	Extracting sector data	CDC_GetSctData	7.2
	Erase sector data	CDC_DelSctData	7.3
	Extract and erase sector data	CDC_GetdelSctData	7.4
	Writing sector data	CDC_PutSctData	7.5
	Copying sector data	CDC_CopySctData	7.6
	Moving sector data	CDC_MoveSctData	7.7
	Sector data copy/move error acquisition	CDC_GetCopyErr	7.8

function		function name	number
CD block file system			8.0
	Move directory	CDC_ChgDir	8.1
	Retaining file information	CDC_ReadDir	8.2
	Obtaining the retained file information range	CDC_GetFileScope	8.3
	Get retained file information	CDC_TgetFileInfo	8.4
	Load file	CDC_ReadFile	8.5
	Aborting file access	CDC_AbortFile	8.6

function		function name	number
register access			9.0
	Obtain data transfer register pointer	CDC_GetDataPtr	9.1
	Obtaining interrupt factor register value	CDC_GetHirqReq	9.2
	Clearing the interrupt factor register	CDC_ClrHirqReq	9.3
	Obtain interrupt mask register value	CDC_GetHirqMsk	9.4
	Setting the interrupt mask register	CDC_SetHirqMsk	9.5
	Obtain MPEG register pointer	CDC_GetMpegPtr	9.6