ADLINK cExpress-BT2 - Manual (Page 28)

Page 28 cExpress-BT2
Signal Pin # Description I/O PU/PD Comment
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
3.4.4. Power and Ground
Signal Pin # Description I/O PU/PD Comment
VCC_12V C104-C109
D104-D109
Primary power input: +12V nominal (wide range 5 ~ 20V).
All available VCC_12V pins on the connector(s) shall be used
P 5 ~ 20V
GND C1, C11, C21, C31, C41,
C51, C60, C70, C76, C80,
C84, C87, C90, C93, C96,
C100, C103, C110, D1,
D11, D21, D31, D41, D51,
D60, D67, D70, D76, D80,
D84, D87, D90, D93, D96,
D100, D103, D110 Ground - DC power and signal and AC signal return path.
All available GND connector pins shall be used and tied to carrier
board GND plane. P