Transcend Information TS4G-32GSDHC6-P2 User Manual

Page 4

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background image

T

T

T

S

S

S

4

4

4

G

G

G

-

-

-

3

3

3

2

2

2

G

G

G

S

S

S

D

D

D

H

H

H

C

C

C

6

6

6

-

-

-

P

P

P

2

2

2

SDHC Memory Card + Reader P2


Transcend Information Inc.

4

Single card capacitance

C

CARD

10

pF

Maximum signal line inductance

16

nH

f

PP

≤ 20 MHz

Pull-up resistance inside card (pin1)

R

DAT3

10

90

kΩ

May be used for card

detection

Note that the total capacitance of CMD and DAT lines will be consist of C

HOST

, C

BUS

and one C

CARD

only because they are

connected separately to the SD Memory Card host.
Host should consider total bus capacitance for each signal as the sum of C

HOST

, C

BUS

, and C

CARD

, these parameters are

defined by per signal. The host can determine C

HOST

and C

BUS

so that total bus capacitance is less than the card estimated

capacitance load (C

L

=40 pF). The SD Memory Card guarantees its bus timing when total bus capacitance is less than

maximum value of C

L

(40 pF).

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