Xilinx ZC702 User Manual

ZC702 Board User Guide www.xilinx.com 38
UG850 (v1.7) March 27, 2019
Feature Descriptions
Information about the ADV7511KSTZ-P is available on the Analog Devices website [Ref 21].
I2C Bus
[Figure 1-2, callout 14]
The ZC702 board implements a single I2C port on the XC7Z020 SoC (IIC_SDA_MAIN,
IIC_SDA_SCL), which is routed through an TI Semiconductor PCA9548 1-to-8 channel I2C
bus switch (U44). The bus switch can operate at speeds up to 400 kHz.
The bus switch I2C address is
0x74 (0b1110100) and must be addressed and configured to
select the desired downstream device.
The ZC702 board I2C bus topology is shown in Figure 1-16.
42 HDMI_D2_N 3
33 HDMI_CLK_P 10
32 HDMI_CLK_N 12
54 HDMI_DDCSDA 16
53 HDMI_DDCSCL 15
52 HDMI_HEAC_P 14
51 HDMI_HEAC_N 19
48 HDMI_CEC 13
X-Ref Target - Figure 1-16
Figure 1-16: I2C Bus Topology
Table 1-18: ADV7511 to HDMI Receptacle Connections (Cont’d)
ADV7511 (U40) Net Name HDMI Receptacle P1 Pin
CH7 - PMBUS_DATA/CLK
PCA9548
1
2
C 1-to-8
Bus Switch
U44
CH6 - FMC2_LPC_IIC_SDA/SCL
CH5 - FMC1_LPC_IIC_SDA/SCL
CH4 - IIC_RTC_SDA/SCL
CH3 - PORT_EXPANDER_SDA/SCL
CH2 - EEPROM_IIC_SDA/SCL
CH1 - IIC_SDA/SCL_HDMI
CH0 - USER_CLK_SDL/SCL
XC7Z020
SoC
PS Bank 501
(VCCMIO_PS 1.8V)
U1
UG850_C1_16_062918
XC7Z020
SoC
PL Bank 13
(2.5V)
U1
PCA9517
I
2
C
Level Shifter
U56
3.3 V
VADJ 2.5V
AB
PCA9517
I
2
C
Level Shifter
U57
3.3 V
VCCMIO_PS 1.8V
AB
IIC_SDA/SCL_MAIN
PS_SDA/SCL_MAIN
IIC_SCL/SDA_MAIN
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Xilinx ZC702 Specifications

General

Brand	Xilinx
Model	ZC702
Category	Motherboard
Language	English