ST6G3237B

Pin settings

5/16

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 3.

Pin descriptions

Pin Nº

µTFBGA25

Type

Side

Symbol

Name and function

A2

I

A-side

CMD-dir

Command direction

HIGH = A to B

LOW = B to A

D2

I/O

A-side

CMD.h

A-side Command

D4

I/O

B-Side

CMD

B-side Command

A3

I

A-Side

DAT0-dir

Data Direction

HIGH = A to B (write)

LOW = B to A (read)

D1

I/O

A-Side

DAT0.h

Data Input / Output

D5

I/O

B-Side

DAT0

Data Input / Output

E3

I

A-Side

DAT123-dir

Data Direction

HIGH = A to B (write)

LOW = B to A (read)

E1

I/O

A-Side

DAT1.h

Data Input / Output

A1

I/O

A-Side

DAT2.h

Data Input / Output

B1

I/O

A-Side

DAT3.h

Data Input / Output

E5

I/O

B-Side

DAT1

Data Input / Output

A5

I/O

B-Side

DAT2

Data Input / Output

B5

I/O

B-Side

DAT3

Data Input / Output

C1

I

A-Side

CLK.h

Clock Input

C5

O

B-Side

CLK

Clock Output

E2

O

A-Side

CLK-f

Clock Feedback

B3

-

A-Side

Power supply

B4

-

B-Side

Power supply

C3, C4

-

-

GND

Ground (0V)

A4, B2, C2,

D3, E4

-

-

NC

No connect