TPCE636 User Manual Issue 1.0.2
Page 48 of 104
The following table lists the available clock sources on the TPCE636:
FPGA Clock Signal Name
FPGA Pin
Number
Source
Description
CLK_MGT
±
H6 / H5
SI5338 low-jitter clock
generator
156.25 MHz differential
MGT Reference clock
REFCLKO2
±
D6 / D5
PCIe Switch
PI7C9X2G312GP
100 MHz differential
PCIe Reference clock input
MCB_CLK
±
AB11 / AC11
SI5338 low-jitter clock
generator
88.889 MHz differential MCB CLK
REF_CLK
±
AA10 / AB10
SI5338 low-jitter clock
generator
200 MHz differential Reference
clock
USER_CLKA
F22
SI5338 low-jitter clock
generator
105 MHz Clock Input
This clock is designated for ADC
interface clock source.
Si514_CLK
±
G22 / F23
Si514 prog. Oscillator
Differential free I2C prog. XO
100kHz up to 250MHz
Default = 156 MHz
SCKOUT_00
±
Y22 / AA22
LTC2323
Diff. Clock ADC Ch. 0 and 1
SCKOUT_01
±
AC23 / AC24
LTC2323
Diff. Clock ADC Ch. 2 and 3
SCKOUT_02
±
Y23 / AA24
LTC2323
Diff. Clock ADC Ch. 4 and 5
SCKOUT_03
±
AA23 / AB24
LTC2323
Diff. Clock ADC Ch. 6 and 7
SCKOUT_04
±
R22 / R23
LTC2323
Diff. Clock ADC Ch. 8 and 9
SCKOUT_05
±
R21 / P21
LTC2323
Diff. Clock ADC Ch. 10 and 11
SCKOUT_06
±
N21 / N22
LTC2323
Diff. Clock ADC Ch. 12 and 13
SCKOUT_07
±
P23 / N23
LTC2323
Diff. Clock ADC Ch. 14 and 15
BACK_IO31
±
C12 / C11
Back I/O Connector
Diff. Back I/O Clock Input (IO31)
BACK_IO30
±
E11 / D11
Back I/O Connector
Diff. Back I/O Clock Input (IO30)
BACK_IO28
±
G11 / F10
Back I/O Connector
Diff. Back I/O Clock Input (IO28)
DIG_IO_01
±
E10 / D10
FireFly I/O Connector
Diff. I/O Clock Input (DIG_IO_01)
K7_EMCCLK
B26
BCC
53.2 MHz used for external
configuration clock (CCLK)
Table 7-6 : Available FPGA clocks