Emerson ATCA-S201 Manuel D’Utilisation
RTM-ATCA-SXXX Overview
6806800H62B
ATCA‐S201 Installation and Use Guide
115
Table 52 Connector J33, PCIe and Miscellaneous RTM Signal Descriptions
PETx…
PCI-Express transmit differential pair signals
PERx…
PCI-Express receive differential pair signals
FCLKA
Fabric clock, as defined in AMC.0 specification. Intended to be used for PCI-Express 100MHz
spread spectrum clock. This signal can be either terminated or passed through the CREFCLK
via jumpers on the RTM403. The ATCA blade provides no spread spectrum support
spread spectrum clock. This signal can be either terminated or passed through the CREFCLK
via jumpers on the RTM403. The ATCA blade provides no spread spectrum support
.
PCIRST#
PCI-Express reset signal (input). The ATCA board may drive a Logic low to reset PCI-Express
switch and PCI-Express interfaces that are behind it.
switch and PCI-Express interfaces that are behind it.
RTM#
RTM# signal is grounded by the ATCA-S201 to indicate a MMC controller is present (see AMC.0
specification.) The ATCA implementation shall include a 10Kohm pull-up resistor to
management power on the ATCA. In this way, an ATCA is able to detect non-intelligent vs.
intelligent RTMs.
specification.) The ATCA implementation shall include a 10Kohm pull-up resistor to
management power on the ATCA. In this way, an ATCA is able to detect non-intelligent vs.
intelligent RTMs.
PCICFG#
PCI-Express bus configuration signal. It shall be grounded on RTMs that use a single x8 PCI-
Express bus and pulled up on the ATCA with 10Kohm resistor to management power. On RTMs
that expect two x4 PCI-Express busses this pin will float (not be connected). Two x4 PCI Express
busses are intended for RTM implementations that desire to avoid PCI-Express switch in order
to reduce latency. The ATCA-S201 asserts logic ground to this signal.
Express bus and pulled up on the ATCA with 10Kohm resistor to management power. On RTMs
that expect two x4 PCI-Express busses this pin will float (not be connected). Two x4 PCI Express
busses are intended for RTM implementations that desire to avoid PCI-Express switch in order
to reduce latency. The ATCA-S201 asserts logic ground to this signal.
PS0#
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 ATCA-S201, 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.
J33) and PS1# (Connector J30) shall be connected through a diode on the ATCA-S201, 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.
ENABLE#
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.
high shall keep MMC in reset state. This signal shall have a pull-up resistor as indicated in
AMC.0 specification.
JTAG_xxx
These pins provide a functional JTAG port on the P33 connector. The JTAG chain is for mfg
testing only and the chain is not intended for RTM use.
testing only and the chain is not intended for RTM use.
I2C_xxx
This bus allows an RTM to place peripherals on the ATCA serial management bus.
10.2.4.3
Connector J30, Power Supply for RTM
The ATCA-S201 supplies 12 V and the 3.3 V stand-by voltages to an advanced rear
transition modules (RTM) via the P30 connector. The P30 connector assignments
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 ATCA-S201 is specified to the following maximum power ratings:
Mean power: 25 W
Peak power: 26 W
Standard deviation of power from mean power: 0.25 W
Standard deviation of power from mean power: 0.25 W
The ATCA-S201 P30 connector is implemented by using Metral® 89096-xxx from
FCI (
FCI (