MAX14502AETL+ Maxim Integrated Products, MAX14502AETL+ Datasheet - Page 34

• Manufacturer Part Number: MAX14502AETL+
• Description: IC CARD READER USB-SD 40-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Smart Card Interface ICr

Specifications of MAX14502AETL+

• Applications: USB
• Interface: I²C
• Voltage - Supply: 1.8 V ~ 3.3 V
• Package / Case: 40-TQFN Exposed Pad
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Hi-Speed USB-to-SD Card
Readers with Bypass
34
FORCEFS
RFU
CONFIG3: Configuration Register 3 (0x03)
SD2MAXCLK
SD1MAXCLK
IE1: Interrupt Enable Register 1 (0x04)
RFU
USBFS
USBSR
VTM
VSD
KVBUS
______________________________________________________________________________________
FIELD NAME
WRITE
READ
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BITS
[7:4]
[3:0]
1
6
5
4
3
2
0
7
RESET
0000
0000
0
0
0
0
0
0
0
0
Sets the maximum USB speed:
0 = Hi-Speed
1 = full speed
Reserved for future use
Limits the max clock for SD card 2. The SD clock will
be the minimum of either this register or the SD card
max speed register.
0111 = base SD clock/64
0110 = base SD clock/32
0101 = base SD clock/16
0100 = base SD clock/8
0011 = base SD clock/4
0010 = base SD clock/2
0001 = base SD clock
0000 = default (base SD clock)
Limits the max clock for SD card 1. The SD clock will
be the minimum of either this register or the SD card
max speed register.
0111 = base SD clock/64
0110 = base SD clock/32
0101 = base SD clock/16
0100 = base SD clock/8
0011 = base SD clock/4
0010 = base SD clock/2
0001 = base SD clock
0000 = default (base SD clock)
Reserved for future use
Full-speed status change:
0 = disable contribution to INT
1 = enable contribution to INT
USB suspend-resume status change:
0 = disable contribution to INT
1 = enable contribution to INT
V
0 = disable contribution to INT
1 = enable contribution to INT
V
0 = disable contribution to INT
1 = enable contribution to INT
VBUS voltage-detector change:
0 = disable contribution to INT
1 = enable contribution to INT
TM
SD
voltage-detector change:
voltage-detector change:
DESCRIPTION
Register Map (continued)
Reader mode
Reader mode
Reader mode
Enter Card
Enter Card
Enter Card
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WHEN
VALID
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