11850-029
10
eMCH (embedded MicroTCA Carrier Hub)
R1.1, July 2021
5 eMCH (embedded MicroTCA Carrier Hub)
The eMCH (embedded MicroTCA Carrier Hub) is intended to provide basic MicroTCA
functionality for switching and managing AMC (Advanced Mezzanine Card) modules.
It delivers switching and hub functionality for the system fabric gigabit ethernet (GbE) as
defined in the AMC.0 standard series.
Furthermore it supports the typical hot swap management and its transition state machine
(M0 to M6) for each AMC module. In addition to that, the embedded MCH monitors and
verifies local sensor data of the chassis and installed FRU devices and supplies MicroTCA
power and cooling concepts by accessing the chassis integrated power supply and fan
coolers.
Remote administration can be done locally over the CLI (Command Line Interface) served by
the front USB port.
Figure 4: eMCH Block Diagram
Microcontroller
1000Base
-B
X#
2
MII
1000Base-B
X#
1
1000Base-T
(Uplink)
IPMB-L#2
IP
MB-L#1
Gigabit-
Ethernet-
Switch
FA
N
Tacho/
PWM
PS1#[0,1]
EN
#[0,1]
Hot-Swap
Controller
Current
Sensor
I2C
I²C
Backplane
USB-Serial
Port
HSC_CTL
AMC #X
1000Ba
se-
BX
IPM
B-L
EN#
/
PS
#
AMC #1
...........
1000Ba
se-B
X
IPMB-L
EN#
/
PS
#
Power
Supply
FANs
FA
N
Tacho/PWM
12
V
eMCH
FRU
EEPROM
1000Base
-B
X#
2
1000Base-B
X#
1
1000Ba
se-
BX
1000Ba
se-
BX
MP Gener on
Status-
LEDs
MP
PP
Fron
tpanel
