Kontron RTM8050 - Manual (Page 20)

Board Features
7 RTM8050
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2.4 HD Mezzanine Hot-Swap Option
Kontron offers the possibility to add a Hot-Swap SAS hard drive on the RTM8050. This hard drive is located on
the lower part of the RTM8050. The Hotswap infrastructure includes Hotswap LED, Hotswap handle, hard disk
presence status, thermal sensor and Non-Intelligent-Managed-FRU EEPROM. All of which are connected to
the MMC. The HD supported is a SAS drive. This module is called RTMDISK. It is managed by the IPMC and
presented as a regular managed FRU to management subsystem.
2.5 Serial Port
The RTM8050 has one serial port available on the face plate. Serial ports is coming from the front board
through zone 3 connector. RS232 buffers are used to convert LVTTL level from zone 3 to RS232 level at the
face plate connector. Serial port works from 9.6 to 115.2 kbits/s.
Table 2-2:Serial Port Connector Pinout
2.6 SFP
The RTM8050 has two SFP modules connectors available on the RTM face plate. The SFP module signals are
coming from the front board 1000Base-KX interface through zone 3 connector.
2.7 MMC Boot Block
The MMC runs a firmware from its internal 256KB flash. It is programmed by an additional 8K boot block. It
keeps the last two copies of the MMC firmware in dedicated flash memories. The boot block activates the MMC
image and can rollback a firmware update in the MMC in case of problems.
Pin Signal
1 RTS
1 DTR
3 TX#
4 GND
5 N.C.
6 RX#
7 N.C.
8 CTS
Note:
Standard product uses a RJ-45 8 pins connector. RI (ring indicator) and DCD (data carrier detect)
signals are not available.
The pinout is a custom one, not the same as RS-232D TIA/EIA-561.
Signal Path:
Serial port is available on the RTM face plate through J9.