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OZ6933
OZ6933-SF-1.7
Page 12
Power Control and General Interface Pins
Pin Number
TQFP
128
Pin Name
Description
BGA
K19
Input
Type
Power
Rail
1
Drive
SPKR_OUT
Speaker Output:
This output can be
used as a digital output to a speaker to
allow a system to support PC Card
fax/modem/voice
and
output. This output is enabled by setting
the socket
’
s
Misc Control
1
register bit 4
to
“
1
”
(for the socket whose speaker
signal is to be directed from BVD2/-
SPKR/-Led to this pin).
LED Output/SKTA_ACTV:
This output
can be used as an LED driver to indicate
disk activity when a socket
’
s BVD2/-
SPKR/-LED pin has been programmed
for LED support.
In the O2 Mode(Index 3B/7B bit 5) , this
pin indicates the socket A activity. The
socket
B
activity
Configuration Register offset 90h (Mux
Control register)
Card Power Clock:
This input is used as
a reference clock (10-100 kHz, usually
32 kHz) to control the serial interface of
the socket power control chips.
A_VCC5#:
This
active-LOW
controls the 5 -volt supply to the A
socket
’
s VCC pins. The active-LOW
level of this output is mutually exclusive
with that of A_VCC3#.
Card Power Serial Data:
This pin
serves as output DATA pin when used
with the serial interface of Texas
Instruments
’
TPS2206IDF & Micrel 2564
socket power control chip.
B_VCC3#:
This
active-LOW
controls the 3.3-volt supply to the A
socket
’
s VCC pins. The active-LOW
level of this output is mutually exclusive
with that of B_VCC5#.
Card Power Serial Latch:
This pin
serves as output LATCH pin when used
with the serial interface of Texas
Instruments
’
TPS2206IDF & Micrel 2564
socket power control chip.
B_VCC5#:
This
active-LOW
controls the 5 -volt supply to the A
socket
’
s VCC pins. The active-LOW
level of this output is mutually exclusive
with that of B_VCC3#.
audio
sound
TTL
I/O
6mA
LED_OUT/
SKTA_ACTV
refers
to
PCI
133
J19
TTL
I/O
1
6mA
CPWRCLK/
A_VCC5#
output
132
K14
TTL
I/O
1
6mA
CPWRDATA/
B_VCC3#
output
131
K15
TTL
I/O
1
6mA
CPWRLATC/
B_VCC5#
output
130
K17
N/A
I/O
1
6mA