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USB2642 데이터시트(PDF) 37 Page - Microchip Technology

부품명 USB2642
상세설명  USB 2.0 Hub and Flash Media Card Controller Combo
PDF  56 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB2642 데이터시트(HTML) 37 Page - Microchip Technology

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 2014-2015 Microchip Technology Inc.
DS00001578C-page 37
USB2642
7.4.3.31
F5h: Reserved
7.4.3.32
F6h: SD1/2 Timeout Options
7.4.3.33
F7h-FBh: Reserved
7.4.3.34
FCh-FFh: Non-Volatile Storage Signature
7.4.4
INTERNAL FLASH MEDIA CONTROLLER EXTENDED CONFIGURATIONS
Enable Registers 100h - 17Fh by setting bit 7 of bmAttribute.
7.4.4.1
100h-106h: Combo LUN 0 Identifier String
7.4.4.2
107h-10Dh: Combo LUN 1 Identifier String
Bit
Name
Description
7:0
rsvd
Bit
Name
Description
7:0
MEDIA_SETTINGS
The SD1 and SD2 Timeout Options:
Bit 0 : rsvd
Bit 1 : rsvd
Bits 2-4 : SD1 timeout
Bits 5-7 : rsvd
A value of 001b equates to a timeout of 0.81 seconds, where 010b indicates
an additional 0.81 seconds for a total of 1.62, and so on. The maximum
value is 000b (default), which indicates a total timeout of 6.5 seconds.
Bit
Byte Name
Description
7:0
rsvd
Byte
Name
Description
4:0
NVSTORE_SIG
This signature is used to verify the validity of the data in the first 256 bytes of
the configuration area. The signature must be set to ATA2.
Byte
Name
Description
6:0
CLUN0_ID_STR
If the LUN to device mapping bytes have configured this LUN to be a combo
LUNs, then these strings will be used to identify the LUN rather than the
device identifier strings.
Byte
Name
Description
6:0
CLUN1_ID_STR
If the LUN to device mapping bytes have configured this LUN to be a combo
LUNs, then these strings will be used to identify the LUN rather than the
device identifier strings.



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