BU94501AMUV Datasheet, PDF (37/73 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU9450xAxxx series
Datasheet
SET_USB_GETDEV_ 6 0x60 0x18 0x06 0x00 ・Specify the timeout value for device descriptor acquisition in the head of USB
F
memory mount operation.
・Specify the setting value to the 5 - 6th byte with a little endian.
・Setting value {6 th=M, 5 th=N} x100 (msec)becomes timeout value.
・Communication ERROR will be carried out if a timeout occur.
・Initial setting is N=100 ( 10sec).
・Specify N within the range from 0x1 to 0xFFFF.
SET_TESTU_MODE
4 0x60 0x18 0x07 N ・Specify the operation for the first-time Test Unit Ready command in USB
memory mount operation.
・Select N from the following. Any other settings will not accept the command.
N= 0x00 : Retry is performed according to the setting value of a SET_RETVAL
command.
N= 0x01 : Retry is performed infinitely.
N= 0x02 : Cancels infinite retry of N=0x01 setting.
・Initial setting is N= 0x00 (Retry is performed according to the setting value of a
SET_RETVAL command.)
SET_USBCMD_CAN
8 0x60 0x18 0x08 0x00 ・Specify the initialization procedure performed in USB memory mount operation.
・Specify the mask of the initialization procedure with a little endian.
・The following bit values should be used for an initialization procedure mask.
When a bit is 0, an applicable initialization procedure is performed.
When a bit is 1, an applicable initialization procedure is not performed.
0x0001 : GET_DEVICE_STATUS
0x0002 : CLEAR_FEATURE
0x0004 : SET_ADDRESS
0x0008 : GET_DESCRIPTOR
0x0010 : GET_CONFIG
0x0020 : SET_CONFIG
0x0040 : GET_LUN
0x0080 : CLEAR_PORT_FEATURE
0x0100 : GET_PORT_STATUS
0x0200 : SET_PORT_FEATURE
0x0400 : GET_HUB_DESCRIPTOR
0x0800 : INQUIRY
0x1000 : TEST_UNIT_READY
0x2000 : REQUEST_SENSE
0x4000 : READ_CAPACITY
・Initial setting is0x0000 .
・Please specify 0 to 7th-8th byte.
SET_RETVAL
6or8 0x60 0x18 0x09 N
・Specify the retry operation performed in USB memory mount operation.
・Specify the setting value from the 5th byte with a little endian.
・The length of a setting value changes with values of N.
・Select N from the following. Any other settings will not accept the command.
N = 0x00: Specify the number of times of execution of sector read at 2 bytes.
Setting value+1 becomes the number of times of execution. Initial setting is 3.
Specify N within the range from 0x0 to 0xFFFF.
N = 0x01: Specify the times of retry for first-time device descriptor acquisition
at 2 bytes. Initial setting is 3. Specify N within the range from 0x1 to 0xFFFF.
N = 0x02: Specify the number of times of execution of the first-time Test Unit
Ready command at 2 bytes. Initial setting is 375. Specify N within the range
from 0x0 to 0xFFFF.
N = 0x05: Specify the timeout setting in the HUB port scan at 4 bytes. Initial
setting is 30000. Specify N within the range from 0x1 to 0xFFFF_FFFF.
N = 0x06: Specify the number of times of execution of the second-time Test
Unit Ready command at 2 bytes. Initial setting is 375. Specify N within the range
from 0x0 to 0xFFFF.
SET_RETRYMODE
SET_TUR_PASS
6 0x60 0x18 0x0A N ・Specify the operation for the each processing in USB memory mount operation.
・Select 5th byte from the following.
0x00 : Retry is performed according to the preset value or specified value by
command.
0x01 : Retry is performed infinitely.
0x02 : Cancels infinite retry setting (0x01).
・Select N from the following. Any other settings will not accept the command.
N= 0x01: Specify the operation of sector read.
N= 0x02: Specify the operation of first-time device descriptor acquisition
N= 0x03: Specify the operation of HUB port scan.
N= 0x04: Specify the operation of the waiting for the ACK response for other
command request.
N= 0x05: Specify the operation of wait after first-time bus reset.
4 0x60 0x18 0x0B N ・Specify the operation after Test Unit Ready timeout in USB memory mount
operation.
・ Select N from the following. Any other setting is considered to specify
N=0x01.
N=0x00: TestUnitReady timeout is considered as mount failure.
N=0x01: If the number of effective LUN is one, continues mount operation.
・Initial value is N= 0x00.
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TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003