RadiSys ATCA-5400 RTM, Reference

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4
LEDs and External Interfaces
22
Zone 3 interface
Two Zone 3 connectors (P30 and P31) provide the following connections to the RTM:

Two SAS lanes to provide access to a SAS hard disk drive on the CPM, connected to:

AMC Port 2

AMC Port 3

x4 PCIe Gen2 connection from the CPM (which serves the RTM’s PCIe Gen1 devices)

Two 1 GbE SerDes lanes from the CPM Ethernet controller

One reset input signal to pass a PCI reset from the CPM to the SAS/SATA controller

Reset button state passed from the RTM through the IPMB-L to the CPM

Maintenance RS-232 serial port to the CPM

Two I 2 C interfaces from the payload Ethernet controller for copper SFP[1:2] SGMII
configuration

IPMB-L interface to the CPM’s IPMC

+12V RTM supply from the CPM

+3.3V management power from the CPM

JTAG connectivity for programming and boundary scan testing for all JTAG capable devices
Table 4 and Table 5 show the Zone 3 pinout of the CPM:
Table 4. RTM connector P30 signals
Row AB CD EF GH
1 +12V_RTM +12V_RTM +12V_RTM +3.3V_IPMC RES_STATE RTM_PRSNT* RTM_HS_LED RTM_EN*
2 +12V_RTM +12V_RTM +12V_RTM IPMC_INT* IPMC_I2C_
CLK IPMC_I2C_
DAT USB_D+ USB_D-
3 SERIAL_0_TX SERIAL_0_RX JTAG_TDI JTAG_TDO JTAG_TMS JTAG_TCK JTAG_TRST* Future
4 SOCA SOCB INT_0 INT_1 RTML_TX RTML_RX RTML_CLK RTM_RESET
5 SERIAL_1_TX SERIAL_1_RX SERIAL_2_TX SERIAL_2_RX SERIAL_3_TX SERIAL_3_RX SERIAL_4_TX SERIAL_4_RX
6 SERIAL_5_TX SERIAL_5_RX SERIAL_6_TX SERIAL_6_RX SERIAL_7_TX SERIAL_7_RX CPU0_SCL

(SMB_SCL)
CPU0_SDA

(SMB_SDA)
7 DEBUG_0 DEBUG_1 DEBUG_2 DEBUG_3 RESET_0 RESET_1 RESET_2 RESET_3
8 FE_TXD- FE_RXD- FE_TX_CT Future Future Future
9 SAS0_TX- SAS0_RX- SAS1_TX- SAS1_RX-
10 GE0_TX- GE0_RX- GE1_TX- GE1_RX-
Notes:

Each differential pair has an individual L-shaped ground contact (not shown).

All signal names are based on the ATCA-4500 CPM signal names.
Gray indicates unused pins on the CPM