Acer 390 Series Service Manual page 54

Table 2-2 PCI1250 Terminal Functions
Name
STOP T17
TRDY U20
PC Card 16 Address And Data Terminals (Slot A And Slot B)
Slot A
A25 T04
A24 U02
A23 U01
A22 P04
A21 R02
A20 R01
A19 P01
A18 N02
A17 M04
A16 T01
A15 T02
A14 P02
A13 N03
A12 T03
A11 M01
A10 L01
A9 M03
A8 N01
A7 V01
A6 V02
A5 V03
A4 W02
A3 W03
A2 W04
A1 V04
A0 U05
1
Terminal name for slot A is preceded with A_. For example, the full name for terminal T04 is A_A25.
2
Terminal name for slot B s preceded with B_. For example, the full name for terminal C14 is B_A25.
2-8
No. I/O Type
I/O
I/O
1 2
Slot B
C14 O
B15
C15
C16
A18
C17
B18
A20
C18
A17
A16
B17
A19
D14
D18
E18
B20
B19
A15
A14
B13
A13
C12
A12
B11
C11
Function
PCI cycle stop signal. This signal is driven by a PCI
target to request the initiator to stop the current PCI
bus tranaction. This signal is used for target
disconnects and is commonly asserted by target
devices which do not support burst data transfers.
PCI target ready. TRDY indicates the primary bus
target s ability to complete the current data phase
of the transaction. A data phase is completed upon
a rising edge of PCLK where both IRDY and TRDY
are asserted. Until both IRDY and TRDY are
asserted, wait states are inserted.
PC Card Address 16-bit PC Card address lines.
A25 is the most significant bit
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