MAX14502AETL+ Maxim Integrated Products, MAX14502AETL+ Datasheet - Page 33

• 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

CONTROL: Control Register (0x00)
RFU
SD2SW
SD1SW
MODE
WAKEUP
CONFIG1: Configuration Register 1 (0x01)
SD2ONEBIT
SD1ONEBIT
INTPULSE
INTACTHI
RFU
CONFIG2: Configuration Register 2 (0x02)
RFU
CLKSOURCE
FIELD NAME
______________________________________________________________________________________
WRITE
READ
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BITS
[7:5]
[2:1]
[3:0]
[6:2]
4
3
0
7
6
5
4
7
RESET
00000
0000
000
00
1
1
0
0
0
0
0
0
Reserved for future use
Setting of SD port 2 switches:
0 = open
1 = closed
Setting of SD port 1 switches:
0 = open
1 = closed
Activates PC USB Hi-Speed SD card reader:
00 = not active
01 = card reader active for SD port 1
10 = card reader active for SD port 2
11 = not active
Wakes the internal µC:
0 = requests µC to shut down
1 = wakes µC
Force the SD port 2 bus to 1 bit mode:
0 = SD bus 4-bit data mode
1 = SD bus 1-bit data mode
Force the SD port 1 bus to 1 bit mode:
0 = SD bus 4-bit data mode
1 = SD bus 1-bit data mode
INT assertion method:
0 = INT stays asserted until STATUS register is read
1 = INT asserts for 10ms pulse
INT pin active level:
0 = active-low
1 = active-high
Reserved for future use
Reserved for future use
S ets the confi g ur ati on for the cl ock i np ut:
00000 = d efaul t
00001 = 19.2M H z r ai l - to- r ai l sq uar e w ave
00010 = 19.2M H z l ow - am p l i tud e AC - coup l ed si ne w ave
00101 = 13M H z r ai l - to- r ai l sq uar e w ave
00110 = 13M H z l ow - am p l i tud e AC - coup l ed si ne w ave
01001 = 12M H z r ai l - to- r ai l sq uar e w ave
01010 = 12M H z l ow - am p l i tud e AC - coup l ed si ne w ave
01101 = 26M H z r ai l - to- r ai l sq uar e w ave
01110 = 26M H z l ow - am p l i tud e AC - coup l ed si ne w ave
Al l other val ues = d efaul t
Hi-Speed USB-to-SD Card
Readers with Bypass
DESCRIPTION
Register Map
Reader mode
Reader mode
Reader mode
WAKEUP = 1
WAKEUP = 1
WAKEUP = 1
Enter Card
Enter Card
Enter Card
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VALID
WHEN
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