11. I/O EXPANSION & CoM Express SOCKETS
This page describes the expansion sockets & CoM Express connector available on Athena IV.
The functionalities on Athena IV is enhanced by the expansion sockets available on-board. There are two I/O expansion sockets & one CoMEx socket on Athena IV.
The two I/O expansions sockets present on Athena IV are:
PC/104
M.2 SATA
Apart from I/O expansion, Athena IV also hosts a CoM Express AB connector. This connector is used to connect the Type 10 CoMEx Mini CPU module.
The pinout details of these sockets are briefed below.
11.1 PC/104 Expansion Connectors [J1, J2]
The ISA interface on Athena IV is accessed on PC/104 connectors. PC/104 connectors are a combination of two connectors; 2x32 connector & 2x20 connector. The 2x32 connector hosts the 8-bit ISA I/O cards. For added 16-bit ISA I/O support, the 2x20 connector is used. Athena IV supports interrupts, 8-bit & 16-bit transactions on the ISA bus.
The PC/104 connectors are press-fit stack through connectors. The ISA I/O cards can be either mounted on the top or the bottom. However, the ISA I/O are recommended to be mounted on the bottom side. This is to avoid blocking airflow over the top-side heat sink on Athena IV.
The 64-pin connector incorporates the 8-bit bus connector signals, and the 40-pin header incorporates the 36-pin 16-bit bus connector signals.
The resources available for external ISA cards are provided below:
Available ISA Address Ranges: 0x100 - 17F, 0x200 - 0x28F, 0x300 - 0x37F
Available ISA IRQs: 5, 7, 9, 10, 11, 12, 13, 15
Pinouts are as shown below:
Connector PN: J1; EPT# 962-60323-12, J2; EPT# 962-60203-12
11.2 M.2 SATA [J10]
Athena IV provides an M-Keyed 2230 size socket for storage applications. Pinouts are as shown below:
NOTE: The NC pins are not connected on Athena IV.
Connector PN: MDT320M03001
11.3 CoM Express Module [J18]
A 220-pin connector is used to mount the CoMEx CPU module. Pinouts are as shown below:
GND | A1 | B1 | GND |
GBE0_MDI3- | A2 | B2 | GBE0_ACT# |
GBE0_MDI3+ | A3 | B3 | LPC_FRAME# |
GBE0_LINK100# | A4 | B4 | LPC_AD0 |
GBE0_LINK1000# | A5 | B5 | LPC_AD1 |
GBE0_MDI2- | A6 | B6 | LPC_AD2 |
GBE0_MDI2+ | A7 | B7 | LPC_AD3 |
GBE0_LINK# (NC) | A8 | B8 | LPC_DRQ0# (NC) |
GBE0_MDI1- | A9 | B9 | LPC_DRQ1# (NC) |
GBE0_MDI1+ | A10 | B10 | LPC_CLK |
GND | A11 | B11 | GND |
GBE0_MDI0- | A12 | B12 | PWRBTN# |
GBE0_MDI0+ | A13 | B13 | SMB_CK |
GBE0_CTREF (NC) | A14 | B14 | SMB_DAT |
SUS_S3# | A15 | B15 | SMB_ALERT# (NC) |
SATA0_TX+ | A16 | B16 | SATA1_TX+ |
SATA0_TX- | A17 | B17 | SATA1_TX- |
SUS_S4# | A18 | B18 | SUS_STAT# |
SATA0_RX+ | A19 | B19 | SATA1_RX+ |
SATA0_RX- | A20 | B20 | SATA1_RX- |
GND | A21 | B21 | GND |
USB_SSRX0- | A22 | B22 | USB_SSTX0- |
USB_SSRX0+ | A23 | B23 | USB_SSTX0+ |
SUS_S5# | A24 | B24 | PWR_OK |
USB_SSRX1- (NC) | A25 | B25 | USB_SSTX1- (NC) |
USB_SSRX1+ (NC) | A26 | B26 | USB_SSTX1+ (NC) |
BATLOW# (NC) | A27 | B27 | WDT (NC) |
ATA_ACT# | A28 | B28 | AC_SDIN2 (NC) |
AC_SYNC | A29 | B29 | AC_SDIN1 (NC) |
AC_RST# | A30 | B30 | AC_SDIN0 |
GND | A31 | B31 | GND |
AC_BITCLK | A32 | B32 | SPKR |
AC_SDOUT | A33 | B33 | I2C_CK |
BIOS_DIS0# | A34 | B34 | I2C_DAT |
THRMTRIP# (NC) | A35 | B35 | THRM# (NC) |
USB6- (NC) | A36 | B36 | USB7- (NC) |
USB6+ (NC) | A37 | B37 | USB7+ (NC) |
USB_6_7_OC# (NC) | A38 | B38 | USB_4_5_OC# (NC) |
USB4- | A39 | B39 | USB5- (NC) |
USB4+ | A40 | B40 | USB5+ (NC) |
GND | A41 | B41 | GND |
USB2- | A42 | B42 | USB3- |
USB2+ | A43 | B43 | USB3+ |
USB_2_3_OC# (NC) | A44 | B44 | USB_0_1_OC# (NC) |
USB0- | A45 | B45 | USB1- |
USB0+ | A46 | B46 | USB1+ |
VCC_RTC | A47 | B47 | EXCD1_PERST# (NC) |
EXCD0_PERST# (NC) | A48 | B48 | EXCD1_CPPE# (NC) |
EXCD0_CPPE# (NC) | A49 | B49 | SYS_RESET# |
LPC_SERIRQ | A50 | B50 | CB_RESET# |
GND | A51 | B51 | GND |
RSVD (NC) | A52 | B52 | RSVD (NC) |
RSVD (NC) | A53 | B53 | RSVD (NC) |
SD_DATA0 (NC) | A54 | B54 | SD_CMD (NC) |
RSVD (NC) | A55 | B55 | RSVD (NC) |
RSVD (NC) | A56 | B56 | RSVD (NC) |
GND | A57 | B57 | SD_WP (NC) |
PCIE_TX3+ (NC) | A58 | B58 | PCIE_RX3+ (NC) |
PCIE_TX3- (NC) | A59 | B59 | PCIE_RX3- (NC) |
GND | A60 | B60 | GND |
PCIE_TX2+ | A61 | B61 | PCIE_RX2+ |
PCIE_TX2- | A62 | B62 | PCIE_RX2- |
SD_DATA1 (NC) | A63 | B63 | SD_CD# (NC) |
PCIE_TX1+ | A64 | B64 | PCIE_RX1+ |
PCIE_TX1- | A65 | B65 | PCIE_RX1- |
GND | A66 | B66 | WAKE0# |
SD_DATA2 (NC) | A67 | B67 | WAKE1# (NC) |
PCIE_TX0+ | A68 | B68 | PCIE_RX0+ |
PCIE_TX0- | A69 | B69 | PCIE_RX0- |
GND | A70 | B70 | GND |
LVDS_A0+ | A71 | B71 | DDI0_PAIR0+ |
LVDS_A0- | A72 | B72 | DDI0_PAIR0- |
LVDS_A1+ | A73 | B73 | DDI0_PAIR1+ |
LVDS_A1- | A74 | B74 | DDI0_PAIR1- |
LVDS_A2+ | A75 | B75 | DDI0_PAIR2+ (NC) |
LVDS_A2- | A76 | B76 | DDI0_PAIR2- (NC) |
LVDS_VDD_EN | A77 | B77 | DDI0_PAIR4+ (NC) |
LVDS_A3+ | A78 | B78 | DDI0_PAIR4- (NC) |
LVDS_A3- | A79 | B79 | LVDS_BKLT_EN |
GND | A80 | B80 | GND |
LVDS_A_CLK+ | A81 | B81 | DDI0_PAIR3+ (NC) |
LVDS_A_CLK- | A82 | B82 | DDI0_PAIR3- (NC) |
LVDS_I2C _CK (NC) | A83 | B83 | LVDS_BKLT_CTRL |
LVDS_I2C_DAT (NC) | A84 | B84 | VCC_5V_SBY |
SD_DATA3 | A85 | B85 | VCC_5V_SBY |
RSVD (NC) | A86 | B86 | VCC_5V_SBY |
RSVD (NC) | A87 | B87 | VCC_5V_SBY |
PCIE0_CK_REF+ | A88 | B88 | BIOS_DIS1# |
PCIE0_CK_REF- | A89 | B89 | DDI0_HPD |
GND | A90 | B90 | GND |
SPI_POWER | A91 | B91 | DDIO_PAIR5+ (NC) |
SPI_MSIO | A92 | B92 | DDIO_PAIR5- (NC) |
SD_CLK (NC) | A93 | B93 | DDIO_PAIR6+ (NC) |
SPI_CKL | A94 | B94 | DDIO_PAIR6- (NC) |
SPI_MOSI | A95 | B95 | DDI0_DDC_AUX_SEL (NC) |
TPM_PP (NC) | A96 | B96 | USB_HOST_PRSNT (NC) |
TYPE10# (NC) | A97 | B97 | SPI_CS# |
SER0_TX | A98 | B98 | DDI0_CTRLCLK_AUX+ |
SER0_RX | A99 | B99 | DDI0_CTRLCLK_AUX- |
GND | A100 | B100 | GND |
SER1_TX (NC) | A101 | B101 | FAN_PWMOUT (NC) |
SER1_RX (NC) | A102 | B102 | FAN_TACHIN (NC) |
LID# (NC) | A103 | B103 | SLEEP# (NC) |
VCC_5V | A104 | B104 | VCC_5V |
VCC_5V | A105 | B105 | VCC_5V |
VCC_5V | A106 | B106 | VCC_5V |
VCC_5V | A107 | B107 | VCC_5V |
VCC_5V | A108 | B108 | VCC_5V |
VCC_5V | A109 | B109 | VCC_5V |
GND | A110 | B110 | GND |
NOTE: The NC pins are not connected on Athena IV.
Connector PN: Foxconn# QT002206-4131-3H
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