ZC706 Evaluation Board User Guide www.xilinx.com 34
UG954 (v1.5) September 10, 2015
Feature Descriptions
Table 1-13 lists the pin-to-pin connections from each clock source to the XC7Z045 AP SoC.
System Clock
[Figure 1-2, callout 7]
Table 1-12: ZC706 Evaluation Board Clock Sources
Clock Name Clock Source Description
System Clock U64
SiT9102 2.5V LVDS 200 MHz fixed-frequency oscillator (SiTime).
See System Clock, page 34.
User Clock U37
Si570 3.3V LVDS I
2
C programmable oscillator, 156.250 MHz default
(Silicon Labs). See Programmable User Clock, page 35.
User SMA Clock J67(P), J68(N)
User clock input SMAs, limit input swing voltage to VADJ_FPGA setting
(1.8V, 2.5V, 3.3V). See User SMA Clock Source, page 36.
PS Clock U24
SIT8103 1.8V single-ended CMOS 33.3333 MHz fixed frequency
oscillator (SiTime). See Processing System Clock Source, page 37.
GTX SMA REF Clock J36(P), J31(N)
User clock input SMAs. See GTX SMA Clock (SMA_MGT_REFCLK_P and
SMA_MGT_REFCLK_N), page 37.
Jitter Attenuated Clock U60
Si5324C LVDS precision clock multiplier/jitter attenuator (Silicon Labs).
See Jitter Attenuated Clock, page 38.
Table 1-13: Clock Connections, Source to XC7Z045 AP SoC
Clock Source Pin Net Name I/O Standard XC7Z045 (U1) Pin
U64.5
SYSCLK_N
LVDS G9
U64.4
SYSCLK_P
LVDS H9
U37.5
USRCLK_N
LVDS_25 AG14
U37.4
USRCLK_P
LVDS_25 AF14
J67.1
USER_SMA_CLOCK_P
LVDS_25 AD18
J68.1
USER_SMA_CLOCK_N
LVDS_25 AD19
J24.3
PS_CLK
NA(1) A22 (Bank 500)
J36.1
SMA_MGT_REFCLK_P
NA(1) W8
J31.1
SMA_MGT_REFCLK_N
NA(1) W7
U60.29
SI5324_OUT_C_N
NA(1) AC7
U60.28
SI5324_OUT_C_P
NA(1) AC8
U60.17
REC_CLOCK_C_N
LVDS_25 AE20
U60.16
REC_CLOCK_C_P
LVDS_25 AD20
U60.3
SI5324_INT_ALM_LS
LVCMOS25 AJ25
U60.1
SI5324_RST_LS
LVCMOS25 W23
Notes:
1. PS-side and GTX nets do not have an assigned I/O standard.