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1V2
2V5
EMI1_MDC
EMI1_MDIO
RTL8211E-VB
(RGMII PHY)
RTL8211E-VB
(RGMII PHY)
CS4315
10G CDR
AQ1202
10G-BASET
PHY_ADDR=0x01
PHY_ADDR=0X02
PHY1_ADDR=0X0C
PHY2_ADDR=0X0D
PHY1_ADDR=0X00
PHY2_ADDR=0X01
EMI1_MDC
EMI1_MDIO
T2080
EMI2_MDC
EMI2_MDIO
Figure 2-9. EMI hardware block
2.9 I2C
The T2080 devices supports up to four I2C buses, in order to make the I2C resources
equally available to both local and remote systems. The T2080RDB-PC uses I2C1 port to
access onboard devices, such as DDR3 DIMM, RTC, I2C EEPROM, clock generator,
thermal sensor (ADT7481), and core power regulator (IR36021). The I2C2 bus uses
multiplexers to partition the I2C bus into several sub-buses, called channels. Two SFP+
optics use channel 0-1 and the PCIe SLOT use channel 3.
The image below shows the I2C subsystem.
Chapter 2 Architecture
QorIQ T2080 Reference Design Board (T2080RDB-PC) User Guide, Rev. 0, 04/2016
Freescale Semiconductor, Inc.
23
Содержание T2080RDB-PC
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