Emerson ATCA-S201 manual 6806800H62B ATCA‐S201 Installation and Use Guide 137

RTM‐ATCA‐SXXX Mechanical and Connector Information

Table 69 Connector J33, Miscellaneous RTM Signal Descriptions

PS0#

ENABLE#

Active low RTM present signal.PS0# is tied to logic GND on the ATCA blade. PS0# (Connector J33) and PS1# (Connector J30) shall be connected through a diode on the RTM, exactly as defined in AMC.0 specification. PS1# is last mate on Power connector and PS0# is on the opposite end of the set of connectors. Logic low on PS1# indicates that RTM is present and fully inserted

When low indicates to RTM that it is fully inserted and that MMC can start execution. Logic high shall keep MMC in reset state. This signal shall have a pull-up resistor as indicated in AMC.0 specification.

13.2.4.3Connector J30, Power Supply for Advanced RTM

The RTM-ATCA-SXXX supplies 12V and the 3.3V stand-by voltages to an Advanced rear transition modules (RTM) via the P30 connector. The P30 connector assignments also include the IPMI-L interface, PS1#. If needed, an Advanced RTM will convert the main 12V payload power into 1.2V, 1.5V, 2.5V and 3.3V by using DCDC converters.

The RTM-ATCA-SXXX P30 connector is implemented with the Metral® 89096-xxx from FCI (www.fciconnect.com).

J30- ATCA

e d c b a

2 1

Figure 47 ‘J30’ RTM Power Receptacle

13.2.4.4Connector J30, RTM Power Pin Assignment

The RTM-ATCA-SXXX J30 connector pin assignments and descriptions appear below.

		Table 70 J30, RTM Power Pin Header Assignment
Row#	Interface		1	2
e	Pwr		PS1#	NC
d	Pwr		+12V PP	+12V PP
c	IPMI		IPMI_SCL_L	IPMI_SDA_L
b	Pwr		Logic_GND	+3.3V MP
a	Pwr		Logic_GND	Shelf_GND

6806800H62B ATCA‐S201 Installation and Use Guide 137