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The onboard Ethernet PHYs, Realtek RTL8211FS (U16 and U17), are connected to the
LS1012A processor EC1 and EC2 using the SGMII protocol over SerDes lane A and
SerDes lane B.
MDIO
MDC
Ethernet Controller
LS1012
3V3
3V3
3V3_RST_B
SGMII
MDI_0_P/N
MDI_1_P/N
MDI_3_P/N
MDI_2_P/N
PMEB
INTB
PHYRSTB
DVDD_RG
DVDD33
4.7K
PHY
SUPPORT
MODE: SGMII
RJ-45
1Gbps
100Mbps
3V3
4.7K
1V
REG_OUT
AVDD10
DVDD10
AVDD33
0 ohm
#1
REALTEK RTL8211FS-CG
48-PIN QFN
Notes and Assumptions:
- MAC connected to Serdes lane B is the same MAC connected to the RGMII interface.
so RGMII and SGMII ( lane B) can not be use at a time.
- If the Serdes is configured for 2 SGMII interfaces, then the RGMII interface is unused
(tristated unless the pinmuxing control register is configured for functionality other than
EC1 RGMII).
S
E
R
D
E
S
L
a
n
e A
TX_P/N
RX_P/N
HSIP/N
HSOP/N
EM1_MDC
EM1_MDIO
X
Transfo rmer
O
V
D
D
1.8
V
Voltage
Translator
1.8V 3.3V
VSEL/
GPIO_1[13]
Figure 2-5. SGMII PHY1
Chapter 2 LS1012AFRDM Functional Description
QorIQ FRDM-LS1012A Board Reference Manual, Rev. 3, 12/2016
NXP Semiconductors
19
Содержание QorIQ FRDM-LS1012A
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