Kontron AM4024e - Manual (Page 34)

D R A F T — F O R I N
T E R N A L U S E O N L Y
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User Guide
AM4024(E)
2.8.2 Synchronization Clock Interface
On the AM4024(E), two PCI Express reference clock configurations are supported in accordance with
the PCI Express Base Specification Revision 3.0 as follows:
» AM4024(E) uses local PCI Express reference clock, and AMC (input) clock (FCLKA) is disabled.
In this configuration, the clock spread spectrum modulation must be disabled.
» AM4024(E) uses local PCI Express reference clock, and AM4024(E) generates PCI Express ref-
erence clock to the AMC Card-edge connector (FCLKA)
The PCI Express reference clock configurations can be set via the uEFI BIOS kBoardConfig command,
option AMCFclka.
2.8.3 System Management Interface
The system management interface is a port from the module to the carrier via the Local Intelligent Plat-
form Management Bus (IPMB-L). The Module Management Controller uses this port for the communi-
cation with the carrier Intelligent Platform Management Controller (IPMC). The IPMB-L is a multi-
master I²C bus.
2.8.4 JTAG Interface
JTAG support is provided on the AMC Card-edge connector. The JTAG interface is supported for vendor
product test and logic update.
On the AM4024(E), the FPGA JTAG port is connected to the AMC JTAG port.
2.8.5 Module Power Interface
The module power interface provides the management power (MP) and payload power (PWR). These two
supply voltages must have power-good indicators so that the system management can detect boot se-
quence events and nominal operating conditions.
The AM4024(E) operates with payload power in the range of 10.8 V to 13.2 V, and with management
power of 3.3 V ± 5%.
The board supports removal and insertion in a powered slot as required by the AMC.0 specification.
2.8.6 AMC Card-edge Connector J1
The AMC Card-edge connector is a high-speed serial interface with 170 pins. The following table pro-
vides the pinout of the AMC Card-edge connector J1. The shaded table cells indicate signals that are
not used on the AM4024(E).
Note: When handling the board, take care not to touch the gold conductive fingers of the AMC
Card-edge connector. Failure to comply with the instruction above may cause damage to
the board or result in improper system operation.