Note that certain user-defined I/Os or multi-gigabit transceivers and clocks are supported only in combina-
tion with Mercury+ modules, which are equipped with a third connector (module connector C).
Signal FMC Pin Single Pairs Module
Name Type Ended Connector
FMC_LA<0-1>_CC_P/N LA CC 4 2 B
FMC_LA<17-18>_CC_P/N LA CC 4 2 B
FMC_LA<2-16>_P/N LA 30 15 B
FMC_LA<19-33>_P/N LA 30 15 B
FMC_HA<0-1>_CC_P/N HA CC 4 2 C
FMC_HA<2-17>_P/N HA 32 16 C
FMC_CLK<0-1>_M2C_P/N CLK M2C - 2 B
FMC_DP<0-3>_C2M_P/N DP C2M - 4 B
FMC_DP<4-7>_C2M_P/N DP C2M - 4 C
FMC_DP<0-3>_M2C_P/N DP M2C - 4 B
FMC_DP<4-7>_M2C_P/N DP M2C - 4 C
FMC_GCLK0_M2C_P/N GBTCLK M2C - 1 B
FMC_GCLK1_M2C_P/N GBTCLK M2C - 1 C
Table 14: Available I/Os on the FMC Connector
The signal names on the module connectors indicate to which pins of the FMC HPC connector they are
routed to. Please note that although HA17 is usually a CC (clock-capable) pin in the FMC standard, it has not
been routed to a clock-capable pin on the Mercury connector, therefore the signal name does not contain
the “CC” part.
Both GBT M2C clock pairs are AC coupled. The user-defined signals on bank B located on the HPC (HB
signals) are not interfaced to Mercury module connectors and therefore not supported.
The FMC I2C interface is connected to the FPGA I2C interface (I2C_SDA/SCL_FPGA) available on module
connector A.
Please refer to the Mercury Master Pinout [9] and the Mercury+ ST1 Base Board User Schematics [4], for
details on FMC connectivity.
4.16 FMC JTAG Connector (J1506)
The FMC JTAG connector allows accessing the JTAG port of the mounted FMC. The signals on this connector
can be accessed with a TC2050-IDC-NL plug of nails, in combination with a TC2050-CLIP.
To ensure a high data throughput, this JTAG connectivity is not chained to the Mercury module. Series
termination resistors are equipped between the module signals and the JTAG header.
The TAG plug of nails connector is not equipped by default on Mercury+ ST1 base board.
D-0000-456-001 22 / 48 Version 02, 23.07.2020
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