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32581C
3.4.8
Low Pin Count (LPC) Bus Interface Signals
Signal Name
Ball No.
LAD3
L29
LAD2
L30
LAD1
L31
LAD0
M28
LDRQ#
L28
LFRAME#
K31
LPCPD#
K28
SERIRQ
J31
3.4.9
IDE Interface Signals
Signal Name
Ball No.
IDE_RST#
AA1
IDE_ADDR2
U2
IDE_ADDR1
AE1
IDE_ADDR0
AD3
IDE_DATA[15:0]
See
Table 3-3
on page
40.
IDE_IOR0#
Y4
IDE_IOR1#
D28
IDE_IOW0#
AD2
IDE_IOW1#
C28
IDE_CS0#
AF2
IDE_CS1#
P2
58
Type
Description
I/O
LPC Address-Data. Multiplexed command,
address, bidirectional data, and cycle status.
I
LPC DMA Request. Encoded DMA request for
LPC interface.
Note: If LDRQ# function is selected but not
used, tie LDRQ# high.
O
LPC Frame. A low pulse indicates the beginning
of a new LPC cycle or termination of a broken
cycle.
O
LPC Power-Down. Signals the LPC device to pre-
pare for power shut-down on the LPC interface.
I/O
Serial IRQ. The interrupt requests are serialized
over a single signal, where each IRQ level is deliv-
ered during a designated time slot.
Note: If SERIRQ function is selected but not
used, tie SERIRQ high.
Type
Description
O
IDE Reset. This signal resets all the devices that are
attached to the IDE interface.
O
IDE Address Bits. These address bits are used to
access a register or data port in a device on the IDE bus.
I/O
IDE Data Lines. IDE_DATA[15:0] transfers data to/from
the IDE devices.
O
IDE I/O Read Channels 0 and 1. IDE_IOR0# is the read
signal for Channel 0 and IDE_IOR1# is the read signal
O
for Channel 1. Each signal is asserted at read accesses
to the corresponding IDE port addresses.
O
IDE I/O Write Channels 0 and 1. IDE_IOW0# is the
write signal for Channel 0. IDE_IOW1# is the write signal
O
for Channel 1. Each signal is asserted at write accesses
to corresponding IDE port addresses.
O
IDE Chip Selects 0 and 1. These signals are used to
select the command block registers in an IDE device.
O
Signal Definitions
GPIO35
GPIO34
GPIO33
GPIO32
GPIO36
GPIO37
GPIO38/IRRX2
GPIO39
TFTDCK
The IDE interface is
muxed with the TFT
interface. See Table
3-5 on page 45 for
TFTD10
GPIO6+DTR2#/
BOUT2+SDTEST5#
GPIO9+DCD2#+
SDTEST2
AMD Geode™ SC3200 Processor Data Book
Mux
Mux
TFTD4
TFTD2
TFTD3
details.
TFTD9
TFTD5
TFTDE
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