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Struck Documentation
SIS8300-KU
MTCA.4 Digitizer
Page 13 of 92
2.8.2 DAC Clock
The DAC clock scheme of the SIS8300-KU is illustrated below.
FPGA
DAC
D
A
C
M
U
X
B
U
F
F
E
R
0
1
ΔT
ΔT
A
D
9
5
1
0
#1
#2
ΔT
ΔT
A
D
9
5
1
0
2
µ
R
T
M
3
RTM_CLK4
DIV0_OUT0
DIV1_OUT0
FPGA_FB
FPGA_CLK
DAC_CLK
16 DATA
DAC_SELIQ
0
0
2.8.3 µRTM Clock Overview
The µRTM clock overview table is shown below.
Clock
Usage
RTM_CLK0
Ultra low jitter clock 1 ADC group 1
RTM_CLK1
Ultra low jitter clock 2 ADC group 2
RTM_CLK2
Clock switch yard
RTM_CLK3
Not used
RTM_CLK4
DAC Clock
RTM_CLK5
Connected to FPGA via clock buffer
2.8.4 TCLK Clock Overview
An overview on the TCLK clocks is shown in the table below.
Clock
Usage
TCLKA
MUX switch yard and Zone 3 AMC_TCLK
TCLKB
MUX switch yard and Zone 3 AMC_TCLK
TCLKC
Not used, can be 100 Ω terminated if needed
TCLKD
Not used, can be 100 Ω terminated if needed