876784 Intel, 876784 Datasheet - Page 60
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876784
Manufacturer Part Number
876784
Description
Manufacturer
Intel
Datasheet
1.876784.pdf
(848 pages)
Specifications of 876784
Lead Free Status / RoHS Status
Compliant
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Table 2-7.
2.8
Table 2-8.
60
Serial ATA Interface Signals (Sheet 2 of 2)
IDE Interface
IDE Interface Signals (Sheet 1 of 2)
SATACLKREQ#/
(Desktop Only)
(Desktop Only)
DD[15:0]
SATA0GP /
SATA2GP /
SATALED#
DA[2:0]
SATA1GP
/ GPIO19
SATA3GP
/ GPIO37
DCS1#
DCS3#
GPIO21
GPIO36
GPIO35
Name
Name
Type
I/O (GP)
(Native)
I/O
O
O
O
Type
OC
OD
I
I
I
I
/
IDE Device Chip Selects for 100 Range: For ATA command register
block. This output signal is connected to the corresponding signal on the
IDE connector.
IDE Device Chip Select for 300 Range: For ATA control register
block. This output signal is connected to the corresponding signal on the
IDE connector.
IDE Device Address: These output signals are connected to the
corresponding signals on the IDE connector. They are used to indicate
which byte in either the ATA command block or control block is being
addressed.
IDE Device Data: These signals directly drive the corresponding
signals on the IDE connector. There is a weak internal pull-down resistor
on DD7.
Serial ATA 0 General Purpose: This is an input pin which can be
configured as an interlock switch corresponding to SATA Port 0.
When used as an interlock switch status indication, this signal should
be drive to ‘0’ to indicate that the switch is closed and to ‘1’ to
indicate that the switch is open.
If interlock switches are not required, this pin can be configured as
GPIO21.
Serial ATA 1 General Purpose: Same function as SATA0GP, except
for SATA Port 1.
If interlock switches are not required, this pin can be configured as
GPIO19.
Serial ATA 2 General Purpose: Same function as SATA0GP, except
for SATA Port 2.
If interlock switches are not required, this pin can be configured as
GPIO36.
Serial ATA 3 General Purpose: Same function as SATA0GP, except
for SATA Port 3.
If interlock switches are not required, this pin can be configured as
GPIO37.
Serial ATA LED: This is an open-collector output pin driven during
SATA command activity. It is to be connected to external circuitry
that can provide the current to drive a platform LED. When active,
the LED is on. When tri-stated, the LED is off. An external pull-up
resistor to Vcc3_3 is required.
NOTE: An internal pull-up is enabled only during PLTRST# assertion.
Serial ATA Clock Request: This is an open-drain output pin when
configured as SATACLKREQ#. It is to connect to the system clock
chip. When active, request for SATA Clock running is asserted. When
tri-stated, it tells the Clock Chip that SATA Clock can be stopped. An
external pull-up resistor is required.
Description
Description
Intel
®
ICH7 Family Datasheet
Signal Description
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