Table 14 Lpc Signal Descriptions; Table 15 Serial Ata Signal Descriptions; Table 16 Usb 2.0 Signal Descriptions - Congatec COM Express conga-TR4 User Manual

Table 14 LPC Signal Descriptions
Signal Pin # Description
LPC_AD[0:3] B4-B7 LPC Mode: LPC multiplexed address, command and data bus
LPC_FRAME# B3 LPC Mode: LPC Frame indicates the start of a LPC cycle.
LPC_CLK B10 LPC Mode: LPC clock output, 33MHz
LPC_DRQ0# B8 LPC Mode: LPC serial DMA request
LPC_DRQ1# B8 LPC Mode: LPC serial DMA request
LPC_SERIRQ A50 LPC Mode: LPC serial interrupt
SUS_STAT# B18 LPC Mode: SUS_STAT# indicates imminent suspend operation. It is used to notify LPC
devices that a low power state will be entered soon. LPC devices may need to
preserve memory or isolate outputs during the low power state.
ESPI_EN# B47 This signal is used by the Carrier to indicate the operating mode of the LPC/eSPI bus.
If left unconnected on the carrier, LPC mode (default) is selected. If pulled to GND on
the carrier, eSPI mode is selected. This signal is pulled to a logic high on the module
through a resistor. The Carrier should only float this line or pull it low.
BIOS_DIS0 A34 Selection strap to determine the BIOS boot device. The Carrier should only float
these or pull them low. Refer to table 4.13 of the COM Express Module Base
BIOS_DIS1 B88
Specification for strapping options of BIOS disable signals.
Table 15 Serial ATA Signal Descriptions
Signal Pin # Description
SATA0_RX+ A19 Serial ATA channel 0, Receive Input differential pair.
SATA0_RX- A20
SATA0_TX+ A16 Serial ATA channel 0, Transmit Output differential pair.
SATA0_TX- A17
SATA1_RX+ B19 Serial ATA channel 1, Receive Input differential pair.
SATA1_RX- B20
SATA1_TX+ B16 Serial ATA channel 1, Transmit Output differential pair.
SATA1_TX- B17
SATA2_RX+ A25 Serial ATA channel 2, Receive Input differential pair.
SATA2_RX- A26
SATA2_TX+ A22 Serial ATA channel 2, Transmit Output differential pair.
SATA2_TX- A23
SATA3_RX+ B25 Serial ATA channel 3, Receive Input differential pair.
SATA3_RX- B26
SATA3_TX+ B22 Serial ATA channel 3, Transmit Output differential pair.
SATA3_TX- B23
(S)ATA_ACT# A28 ATA (parallel and serial) or SAS activity indicator, active low.
Table 16 USB 2.0 Signal Descriptions
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I/O
I/O 3.3V
O 3.3V
O 3.3V
I 3.3V
I 3.3V
I/O OD 3.3V
O 3.3V
I 3.3V
I
I
I/O PU/PD Comment
I SATA Supports Serial ATA specification, Revision 3.0.
Only two SATA ports can be set to active via BIOS setup.
O SATA Supports Serial ATA specification, Revision 3.0.
Only two SATA ports can be set to active via BIOS setup.
I SATA Supports Serial ATA specification, Revision 3.0.
Only two SATA ports can be set to active via BIOS setup.
O SATA Supports Serial ATA specification, Revision 3.0.
Only two SATA ports can be set to active via BIOS setup.
I SATA Supports Serial ATA specification, Revision 3.0.
Only two SATA ports can be set to active via BIOS setup.
O SATA Supports Serial ATA specification, Revision 3.0.
Only two SATA ports can be set to active via BIOS setup.
I SATA Supports Serial ATA specification, Revision 3.0.
Only two SATA ports can be set to active via BIOS setup.
O SATA Supports Serial ATA specification, Revision 3.0.
Only two SATA ports can be set to active via BIOS setup.
O 3.3V
TR44m17
PU/PD Comment
PU 10K 3.3V
Not supported
PU 10K 3.3V
43/65