ADLINK Technology Express-SL2, User Manual

Page: 30 / 96

24
Pinouts and Signal Descriptions
Signal Pin # Description I/O PU/PD Comment
PCI_GNT1#
PCI_GNT2#
PCI_GNT3# C18
C16
D19 3.3V
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 5k1
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 5k1
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 PU 5K1
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 5K1
3.3V
PCI_CLK D50 PCI 33MHz clock output O 3.3V
PCI_M66EN D49 Module input signal indicates whether an off-Module
PCI device is capable of 66MHz operation. Pulled to
GND by Carrier Board device or by Slot Card if the
devices are NOT capable of 66 MHz operation.
If the Module is not capable of supporting 66 MHz PCI
operation, this input may be a no-connect on the
Module.
If the Module is capable of supporting 66 MHz PCI
operation, and if this input is held low by the Carrier
Board, the Module PCI interface shall operate at 33
MHz. I 3.3V PD 100
ohm
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 6