ST6G3237

Pin settings

5/17

2.2

Pin descriptions

●

CMD, Command is a bidirectional line. The host and card drivers are operating in

push-pull.

●

DAT0-3, Data lines are bi-directional lines. Host and 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.

Table 2.

Pin descriptions

Pin Nº

µTFBGA25

Pin Nº

TSSOP20

Type

Side

Symbol

Name and function

A2

12

I

A-side

CMD-dir

Command direction

HIGH = A to B

LOW = B to A

D2

9

I/O

A-side

CMD.h

A-side Command

D4

13

I/O

B-Side

CMD

B-side Command

A3

11

I

A-Side

DAT0-dir

Data Direction

HIGH = A to B (write)

LOW = B to A (read)

D1

8

I/O

A-Side

DAT0.h

Data Input / Output

D5

14

I/O

B-Side

DAT0

Data Input / Output

E3

10

I

A-Side

DAT123-dir

Data Direction

HIGH = A to B (write)

LOW = B to A (read)

E1

2

I/O

A-Side

DAT1.h

Data Input / Output

A1

3

I/O

A-Side

DAT2.h

Data Input / Output

B1

4

I/O

A-Side

DAT3.h

Data Input / Output

E5

19

I/O

B-Side

DAT1

Data Input / Output

A5

18

I/O

B-Side

DAT2

Data Input / Output

B5

17

I/O

B-Side

DAT3

Data Input / Output

C1

5

I

A-Side

CLK.h

Clock Input

C5

16

O

B-Side

CLK

Clock Output

E2

6

O

A-Side

CLK-f

Clock Feedback

B3

7

-

A-Side

Power supply

B4

15

-

B-Side

Power supply

C3, C4

1, 20

-

-

GND

Ground (0V)

A4, B2, C2,

D3, E4

-

-

-

NC

No connect