Acer 390 Series Service Manual page 55

Table 2-2 PCI1250 Terminal Functions
Name
D15 K03
D14 J02
D13 J04
D12 H02
D11 G01
D10 W08
D9 Y07
D8 V07
D7 J01
D6 J03
D5 H01
D4 H03
D3 G02
D2 V08
D1 W07
D0 Y06
16-Bit PC Card Interface Control Terminals (Slot A And Slot B)
Slot A
BVD1 V06
(STSCHG/RI)
3
Terminal name for slot A is preceded with A_. For example, the full name for terminal W01 is A_ESET
4
Terminal name for slot B s preceded with B_. For example, the full name for terminal B13 is B_RESET
Major Chips Description
No. I/O Type
E19 I/O
E20
G18
G19
H18
B07
C08
A08
G17
F19
F20
F19
H19
A07
B08
D09
3 4
Slot B
A09
Function
Card Data. 16-bit PC Card data lines. D15 is the
most significant
Battery Voltage Detect 1. Generated by 16-bit
memory PC Cards that include batteries. BVD1 is
used with BVD2 as an indication of the condition of
the batteries on a memory PC Card. Both BVD1
and BVD2 are kept high when the battery is good.
When BVD2 is low and BVD1 is high, the battery is
weak and needs to be replaced. When BVD1 is
low, the battery is no longer serviceable and the
data in the memory PC Card is lost. See the Card
Status Change interrupt Configuration register for
enable bits. See the Card Status Change register
and the Interface Status register for the status bits
for this signal.
Status Change (STSCHG). STSCHG is used to
alert the system to a change in the READY, write
protect, or battery voltage dead condition of a 16-
bit l/O PC Card.
Ring Indicate (RI). Ring indicate is used by 16-bit
modem cards to indicate a ring detection.
2-9