BU94501AMUV Datasheet, PDF (39/73 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU9450xAxxx series
Datasheet
SET_IGNORE
SET_SRC_OFF
12 0x60 0ｘ22 0x00 N
・Specify the character string disregarded at the time of sorting files and folders.
・The specified character string is compared with the head of the name.
・Specify 4byte ASCII character string to 5-8th byte.
・If the ASCII character is less than 4byte, fill with 0x00 data.
・Select N from the following.
N=0x00 ; Normal sort. Specified character is not disregarded.
N=0x01-0x04 ; Specified character is disregarded. Specify character length to N.
・Initial value is N= 0x00.(Normal sort)
4 0x60 0x23 0x00 0x01 ・sample rate converter is used in off
・sample rate converter can't be turned on by the command. Turned on it by the
IC reset.
SET_SD
AUTO_RECOG_LUN
4 0x60 0x24 N M ・Specify the use of a serial bus.
・Select N from the following.
N=0x00:No effective-I/F
N=0x01:SD I/F
・Initial setting is N=0x00(No effective-I/F).
・Select M from the following.
M=0x00: Initialization processing is carried out after detecting SD connection.
M=0x01: Initialization processing is not carried out after detecting SD
connection.
・Initial setting is M=0x00(Initialization processing is carried out).
・When select M=0x01, send SET_SD_INFO command in advance.
4 0x60 0x25 N 0x00 ・When multiple LUN device is connected, the auto polling of the Test Unit Ready
to each LUN is enabled.
・The result of the polling is saved to LUN_READY status.
Then, LUN_READY_RENEW status notifies the updating.
・Select N from the following. Any other setting is considered to specify N=0x01.
N=0x00 ; The auto polling of the Test Unit Ready is disabled.
N=0x01 ; The auto polling of the Test Unit Ready is enabled.
・Initial setting is N=0x00(The auto polling of the Test Unit Ready is disabled).
SET_RECOG_TIM
RECOG_LUN
4 0x60 0x26 0x00 N ・Cycles to do the auto polling of AUTO_RECOG_LUN is configured.
・Set value x200 (msec) becomes the cycle of the polling performance.
・Initial value is 1sec.
4 0x60 0x27 0x00 0x00 ・Check Test Unit Ready of each LUN , and update LUN_READY status only
once.
SET_WMA
4 0x60 0x28 0x00 0x00 ・The file of the extension "WMA', "ASF" is removed from the playback object.
・The configuration of this command can't do exemption by the command.
Exempt it by the IC reset.
SET_AAC
SET_LUN
RESET_LUN
4 0x60 0x29 0x00 0x00 ・The file of the extension"MP4', "M4A", "3GP" is removed from the playback
object.
・The configuration of this command can't do exemption by the command.
Exempt it by the IC reset.
4 0x60 0x31 0x00 N LUN, which USB memory mounts, is specified.
LUN specified at the time of USB connection mounts.
When another LUN is already mounted, Re-mounts By FORCE_DISCON_USB
command and FORCE_CON_USB command,
When not specifying LUN, effective LUN becomes an AUTO setup and LUN
detected first is mounted at the time of USB memory connection.
(Initial value)
4 0x60 0x32 0x00 0x00 Effective LUN is set to AUTO and LUN detected first comes to be mounted at
the time of USB memory connection.
FORCE_DISCON_US 4 0x60 0x33 0x00 0x00 Force USB memory to be disconnected.
B
FORCE_CON_USB
4 0x60 0x34 0x00 0x00 Mount USB memory again,.
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TSZ22111・15・001
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TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003