USB2640I Standard Microsystems Corp., USB2640I Datasheet - Page 47

• Manufacturer Part Number: USB2640I
• Description: Industrial Temperature Usb 2.0 Flash Media Controller And Usb Hub Combo
• Manufacturer: Standard Microsystems Corp.

Industrial Temperature USB 2.0 Flash Media Controller and USB Hub Combo
SMSC USB2640i/USB2641i
7.3.3.33
7.3.3.34
7.3.3.35
7.3.3.36
7.3.4
NUMBER
NUMBER
NUMBER
BYTE
MS_SD_CLK_LIM
BIT
BIT
7:0
7:0
7:0
BYTE NAME
F4h: MS/SD Clock Limit
F5h: Reserved
F6h: Reserved
FCh-FFh:
I
The I
Philips Semiconductor Standard I
I
the Standard-mode I
electrical compatibility.
Note: Extensions to the I
The device acts as the master and generates the serial clock SCL, controls the bus access
(determines which device acts as the transmitter and which device acts as the receiver), and generates
the START and STOP conditions.
2
2
C EEPROM interface is designed to attach to a single “dedicated” I
C EEPROM
NVSTORE_SIG
BYTE NAME
BYTE NAME
BYTE NAME
2
C EEPROM interface implements a subset of the I
Reserved
Reserved
Non-volatile Storage Signature
Nibble Bits
Nibble Bits
Upper
Lower
TYPE
2
C Specification (100 kbit/s transfer rate and 7-bit addressing) for protocol and
DEFAULT VALUE
DEFAULT VALUE
2
C Specification are not supported.
STRING
BITS
“ATA2”
7:4
3:0
66h
00h
2
C-Bus Specification for details on I
DATASHEET
0: MS - 60 MHz -- Default, no limit
1: MS - 40 MHz
2: MS - 20 MHz
3: MS - 15 MHz
0: SD/MMC - 48 MHz
1: SD/MMC - 24 MHz
2: SD/MMC - 20 MHz
3: SD/MMC - 15 MHz
47
Reserved.
Reserved for media usage.
This signature is used to verify the validity of the
data in the configuration area. The signature must be
set to ‘ATA2’ for USB2640i/USB2641i.
2
C Master Specification (Please refer to the
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
2
2
C EEPROM, and it conforms to
C bus protocols). The device’s
Revision 2.0 (10-03-08)