2-18
Service Guide
Table 2-2
PCI1250 Terminal Functions
Name
No.
I/O Type
Function
PC/PCI DMA Terminals
PCREQ/
IRQMUX7
Y12
O
PC/PCI DMA Request. This signal is used to
request DMA transfers as DREQ in a system
supporting the PC. PCI DMA scheme.
IRQMUX7. When this terminal is configured for
IRQMUX7, it provides the IRQMUX7 interrupt
output of the interrupt mux, and can be mapped to
any of 15 ISA type IRQs. The IRQMUX7 signal
takes precedence over PCREQ, and should not be
enabled in a system using PC/PCI DMA.
This pin is also used for the serial EEPROM
interface.
PCGNT/
IRQMUX6
U11
I/O
PC/PCI DMA Grant. This signal is used to grant the
DMA channel to a requester in a system supporting
the pr PCI DMA scheme.
IRQMUX6. When :his terminal is configured for
IRQMUX6, it provides the IRQMUX6 interrupt
output of the interrupt mux, and can be mapped to
any of 15 ISA type IRQs. The IRQMUX6 signal
takes precedence over PCGNT, and should not be
enabled in a system using PC/PCI DMA.
This pin is also used for the serial EEPROM
interface.
Miscellaneous Terminals
GPIO0/
LEDA1
V11
I/O
GPIO0 / Socket Activity LED Indicator 1. When this
signal is configured as LEDA1 it provides an output
indicating PC Card socket O activity. Otherwise,
this signal can be configured as a general purpose
input and output, GPIO0. The zoom video enable
signal (ZVSTAT) can also be routed to this signal
through the GPIO0 Control register. This terminal
defaults to a general purpose input.
GPIO1/
LEDA2
W11
I/O
GPI01 / Socket Activity LED Indicator 2. When this
signal is configured as LEDA2 it provides an output
indicating PC Card socket 1 activity. Otherwise, this
signal can be configured as a general purpose input
and output. GPIO1. A CSC interrupt can be
generated on a GPDATA change, and this input can
be used for power switch overcurrent (OC) sensing.
Refer to the GPI01 Control resister for
programming details. This terminal defaults to a
general purpose input.
SUSPEND
Y1
I
Suspend. This signal is used to protect the internal
registers from clearing when the PRST signal is
asserted. For details on implementing SUSPEND in
your system power management scheme refer to
the section on SUSPEND mode.
Summary of Contents for 390 Series
Page 15: ...System Introduction 1 3 Figure 1 2 PCB No 96183 1A Mainboard Layout Bottom ...
Page 96: ...2 50 Service Guide 2 3 3 Pin Configuration Figure 2 4 FDC37C67 TQFP Pin Diagram ...
Page 97: ...Major Chips Description 2 51 Figure 2 5 FDC37C67 QFP Pin Diagram ...
Page 102: ...2 56 Service Guide 2 3 6 Block Diagram Figure 2 6 FDC37C67 Block Diagram ...
Page 126: ...2 80 Service Guide 2 5 4 1 Functional Block Diagram Figure 2 10 M38813 Block Diagram ...
Page 128: ...2 82 Service Guide 2 6 2 Pin Diagram Figure 2 11 YMF715 Block Diagram ...
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