ADLINK Technology COM Express cExpress-BT2, Руководство пользователя

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cExpress-BT2
Pinouts and Signal Descriptions
25
Signal Pin # Description I/O PU/PD Comment
PCI_GNT0#
PCI_GNT1#
PCI_GNT2#
PCI_GNT3# C20
C18
C16
D19 PCI bus master grant output lines,
active low. O 3.3V PCI_GNT[0..3]# are boot strap signals
(see note below)
PCI_RESET# C23 PCI Reset output, active low. O 3.3V
PCI_LOCK# C35 PCI Lock control line, active low. I/O
3.3V PU 8k2
3.3V
PCI_SERR# D33 System Error: SERR# may be
pulsed active by any PCI device that
detects a system error condition. I/O
3.3V PU 8k2
3.3V
PCI_PME# C15 PCI Power Management Event: PCI
peripherals drive PME# to wake
system from low-power states S1–
S5. I
3.3VSB
PCI_CLKRUN# D48 Bidirectional pin used to support PCI
clock run protocol for mobile
systems. I/O
3.3V PU 10k
3.3V
PCI_IRQA#
PCI_IRQB#
PCI_IRQC#
PCI_IRQD# C49
C50
D46
D47 PCI interrupt request lines I 3.3V PU 8k2
3.3V
PCI_CLK D50 PCI 33MHz clock output O 3.3V
3.4.3. Module Type Definition
Signal Pin # Description I/O Comment
TYPE0#
TYPE1#
TYPE2# C54
C57
D57 The TYPE pins indicate to the Carrier Board the Pin-out Type that is
implemented on the module. The pins are tied on the module to either
ground (GND) or are no-connects (NC). For Pinout Type 1, these pins
are don’t care (X).
TYPE2# TYPE1# TYPE0#
X X X Pinout Type 1
NC NC NC Pinout Type 2
NC NC GND Pinout Type 3 (no IDE)
NC GND NC Pinout Type 4 (no PCI)
NC GND GND Pinout Type 5 (no IDE, no PCI)
GND NC NC Pinout Type 6 (no IDE, no PCI)
The Carrier Board should implement combinatorial logic that monitors
the module TYPE pins and keeps power off (e.g deactivates the
ATX_ON signal for an ATX power supply) if an incompatible module
pin-out type is detected. The Carrier Board logic may also implement
a fault indicator such as an LED.
Type 2