Function details-3

8.2.3 Subcode

List

Title Function specifications

Function Get subcode Q

Function Name [S-] CDC_TgetScdQch

No 3.1 3.1

Form

Sint32 CDC_TgetScdQch (Uint16 * qcode)

input

none

output

qcode: Subcode Q information (5 words) …… Refer to the data specifications (Subcode)

Function value

Returns an error code.

function

Gets the subcode Q channel information (10 bytes other than CRC).

List

Title Function specifications

Function Acquisition of subcodes R to W

Function Name [S-] CDC_TgetScdRwch

No 3.2

Form

Sint32 CDC_TgetScdRwch (Uint16 * rwcode, Sint32 * scdflag)

input

none

output

rwcode	: Subcode RW information (12 words) …… Refer to data specifications (Subcode)
scdflag	: Subcode flag (lower 8 bits are valid)

Function value

Returns an error code.

function

Acquires subcode R to W channel information (24 bytes for one pack).

(1) Subcode flag

Indicates the error status of the extracted subcodes RW information (pack data).

bit 7 6 5 4 3 2 1 0
    [-] [-] [-] [-] [-] [-] [] []
                       | |
                       | + ---- CDC_SCD_PACK 1: Pack data error occurred + ------- CDC_SCD_OVER 1: Overrun error

remarks

Pack data must not be retrieved more than 16 packs during one frame time (13.3ms).
If the pack buffer is empty and there is no pack data, WAIT is returned.