NXP Semiconductors QorIQ LX2160A - 2.7 eSDHC interface

1V21V2
EMI1_MDIO
EMI1_MDC
EMI2_MDIO
EMI2_MDC
OVDD=1V8
Inphi
IN112525
PHY=0x00
LX2160A
1V8
1V8
1V21V2
1V21V21V21V2
Inphi
CS4223
PHY=0x00
NTSX2102GD
Voltage
Level
Translator
2V5
1V8
NTSX2102GD
Voltage
Level
Translator
2V5
1V8
2V5
1V21V2
Aquantia
AQR107 #2
PHY=0x05
1V21V2
Aquantia
AQR107 #1
PHY=0x04
Qualcomm
AR8035 #2
PHY=0x02
Qualcomm
AR8035 #1
PHY=0x01
Figure 2-13. EMI routing architecture
Both EMI1 and EMI2 operate at OVDD (1.8 V) levels. For devices not operating at
1.8 V, EMI signals are bi-directionally shifted to the compatible voltage using voltage
level translators.
NOTE
In the LX2160ARDB, no multiplexer routing is needed for EMI
connections.
The table below summarizes the EMI connections.
Table 2-9. EMI connections
EMI bus MDIO address Device connected
EMI1 0x00 Inphi CS4223 40 GbE PHY
0x01 Qualcomm AR8035 1 GbE PHY #1
0x02 Qualcomm AR8035 1 GbE PHY #2
0x04 Aquantia AQR107 10 GbE PHY #1
0x05 Aquantia AQR107 10 GbE PHY #2
EMI2 0x00 Inphi IN112525 25 GbE PHY
eSDHC interface
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 0, 09/2018
36 NXP Semiconductors