Datasheet

SYSRST
CPxx
RCLKEN
PERST
REFCLK
(Either Tri-Stated or Off)
Host Power
(AUXIN)
Host Power
(3.3VIN and 1.5VIN)
Card Power
(AUXIN, 3.3VOUT,
and 1.5VOUT)
Note: Once 3.3 V and 1.5 V are applied, the power switch follows the power-up sequence of Figure 18 or Figure 19.
SYSRST
CPxx
RCLKEN
REFCLK
Host Power
(AUXIN, 3.3VIN, and 1.5VIN)
Card Power
(AUXOUT, 3.3VOUT, and 1.5VOUT)
PERST
c
d
e
a
a
Tpd
Min Max
Units
a
b
500
c
d
e 500
ns
System Dependent
System Dependent
ns
Load Dependent
TPS2231
TPS2236
www.ti.com .................................................................................................................................................. SLVS536J –JULY 2004–REVISED SEPTEMBER 2009
Figure 20. Timing Signals - Host System In Standby Prior to Card Insertion
Figure 21. Timing Signals - Host-Controlled Power Down
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