PC6-TANGO • CompactPCI
®
PlusIO • Intel® Atom™ E39xx Processor (APL-I SoC)
GPIO Usage
GPIO Usage APL-I SoC
GPIO Usage APL-I SoC
GPIO
Type
Function
Description
0-15
I
N/A
Not connected on PC6
16
O
GP_LED_RED
General Purpose Red LED Control (via PLD)
17
I
CPCI_FAL
CompactPCI Power Failure Line CPCI_FAL# via inverting level shifter
18
O
CPCI_INTS_EN
LOW:
Isolate SERIRQ from CPCI_INTS
HIGH: Connect SERIRQ to CPCI_INTS
19
O
SE_SYS_WP
General Purpose Serial EEPROM Write Protection
20
O
TPM_PP
TPM2.0 Physical Present Pin
21
O
ENABLE_NC3
Enable Ethernet Controller NC3
22
O
ENABLE_NC4
Enable Ethernet Controller NC4
23
O
ENABLE_NC1
Enable Ethernet Controller NC1
24
O
ENABLE_NC2
Enable Ethernet Controller NC2
25
I
GP_JUMP#
Reset UEFI/BIOS Setup to Factory Defaults, Jumper J-GP
26
O
SATA_SOC_ACT#
Native: Signal APL SATA activity via green HD LED in Front Panel (via
PLD)
27
O
PPSM_EN
Connect IEEE 1588 PPS/PPM to J-GP and CompactPCI
®
J2
LOW: PPS/PPM disconnected from J-GP and J2
HIGH: PPS/PPM connected to J-GP and J2
28-31
I
BOARD_CFG
Board Configuration Jumpers BOARD_CGF[0:3]
32
O
USB_FP1_PEN
USB Front Panel Right Port Power Enable
33
O
USB_FP2_PEN
USB Front Panel Left Port Power Enable
183
I
EXP_SMI#
Expansion Interface SMI Request (from P-EXP Pin 15 via level shifter)
ISH 0
O
SOC_HDA_BCLK
Native: HD Audio BCLK (to P-EXP Pin 37 via level shifter)
ISH 1
O
SOC_HDA_SYNC
Native: HD Audio SYNC (to P-EXP Pin 36 via level shifter)
ISH 2
I
SOC_HDA_SDI
Native: HD Audio IN (from P-EXP Pin 34 via level shifter)
ISH 3
O
SOC_HDA_SDO
Native: HD Audio OUT (to P-EXP Pin 33 via level shifter)
ISH 4-6
I
HW_REV
PCB Revision Code HW_REV[2:0]:
GPIO[6:4]
000
001
010
...
111
Revision
0
1
2
...
7
ISH 7
I
CPCI_ENUM#
CompactPCI System Enumeration Line ENUM# (from J1 Pin C25 via
level shifter)
ISH 8
I
CPCI_INTP
CompactPCI Interrupt Request Line CPCI_INTP (from J1 Pin E4 via
level shifter)
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