11850-016
8
EMCH (Embedded MicroTCA Carrier Hub)
R1.0, February 2016
5 EMCH (Embedded MicroTCA Carrier Hub)
The EMCH (Embedded MicroTCA Carrier Hub) is intended to provide basic MicroTCA
functionality for switching and managing two 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 6: EMMC Block Diagram
Microcontroller
1000Base
-B
X#2
MII
1000Base-B
X#1
1000Base-T
(Uplink)
IPMB
-L
#2
IPMB
-L
#1
Gigabit-
Ethernet-
Switch
FAN
Tacho/PWM
PS1#[0,1]
EN#[
0,1]
Hot-Swap
Controller
Current
Sensor
I2
C
I²C
Backplane
USB-Serial
Port
HSC_CTL
AMC#2
1000Base-B
X
IPMB-L
EN#
/
PS#
AMC#1
1000Base-B
X
IPMB-L
EN#
/
PS#
Power
Supply
FANs
FAN
Tacho/PWM
12V
eMCH
FRU
EEPROM
1000Base
-B
X#2
1000Base-B
X#1
1000Base-B
X
1000Base-B
X
MP Generaon
Status-
LEDs
MP
PP
Fron
tpanel
