ST6G3238E

Pin connection and function

5/19

2.1

Pin function

●

CMD, Command is a bi-directional line. The host and card drivers are operating in push-

pull.

●

DAT0-3, Data lines are bi-directional lines. The host and the card drivers are operating in

push-pull mode.

●

CLK, Clock is a host to card signal. CLK operates in push-pull mode.

●

Feedback (return) Clock is feedback clock signal from level shifter to host for controlling

delays.

●

8kV contact.

●

to 8kV contact.

Table 3.

Pin description

µTFBGA Pin N° TSSOP Pin N°

Type

Side

Symbol

Name and function

A2

3

I

A-side

CMD-dir

Command direction

HIGH = A to B

LOW = B to A

D2

4

I/O

A-side

CMD.h

A-side Command

D4

22

I/O

B-Side

CMD

B-side Command

A3

1

I

A-Side

DAT0-dir

Data Direction

HIGH = A to B (write)

LOW = B to A (read)

D1

5

I/O

A-Side

DAT0.h

Data Input / Output

D5

21

I/O

B-Side

DAT0

Data Input / Output

E3

15

I

A-Side

DAT123-dir

Data Direction

HIGH = A to B (write)

LOW = B to A (read)

E1

6

I/O

A-Side

DAT1.h

Data Input / Output

A1

7

I/O

A-Side

DAT2.h

Data Input / Output

B1

8

I/O

A-Side

DAT3.h

Data Input / Output

E5

20

I/O

B-Side

DAT1

Data Input / Output

A5

19

I/O

B-Side

DAT2

Data Input / Output

B5

18

I/O

B-Side

DAT3

Data Input / Output

C1

10

I

A-Side

CLK.h

Clock Input

C5

17

O

B-Side

CLK

Clock Output

E2

9

O

A-Side

CLK-f

Clock Feedback

D3

23

-

A-Side

CD

Card Detect

E4

16

-

A-Side

WP

Write Protect

B3

2

-

A-Side

Power supply

B4

24

-

B-Side

Power supply

C3, C4

11, 14

-

-

GND

Ground (0V)

A4, B2, C2

12, 13

-

-

NC

No connect