The VMK180 board provides fixed and variable clock sources for the XCVM1802 U1 device and other function blocks. The following table lists the source devices for each clock.
| Callout | Ref. Des. | Feature | Notes | Schematic Page |
|---|---|---|---|---|
| 36 | U2 | DDR4 DIMM CLK, 200 MHz, 3.3V LVDS, 0x60
|
Silicon Labs SI570BAB000299DG | 4 |
| 37 | U3 | LPDDR4 CLK2, 200 MHz, 3.3V LVDS, 0x60
|
Silicon Labs SI570BAB000299DG | 5 |
| 38 | U4 | LPDDR4 CLK1, 200 MHz, 3.3V LVDS, 0x60
|
Silicon Labs SI570BAB000299DG | 7 |
| 39 | U5 | HSDP CLK, 156.25 MHz, 3.3V LVDS, 0x5D
|
Silicon Labs SI570BAB000544DG | 8 |
| 40 | U32 |
Versal device U1 REF CLK, 33.33 MHz, 1.8V CMOS,
0x5D
|
Silicon Labs SI570JAC000900DG | 43 |
| 41 | U39 | PCIe jitter atten., 100 MHz, 3.3V LVDS | IDT 85411AMLF | 49 |
| 42 | U62 |
HDMI jitter atten., 148.50 MHz, 3.3V LVDS,
0x6C
|
IDT 8T49N241-994NLGI | 52 |
| 43 | U142 | SYSCTLR clocks 33.33 MHz & 125 MHz I2C
0x6A
|
Silicon Labs Si5332FD10259-GM1 | 101 |
| 44 | U192 | zSFP CLK, 156.25 MHz, 3.3V LVDS, 0x5D
|
Silicon Labs SI570BAB000544DG | 8 |
| 45 | U205 | FMCP MGT CLK, 100 MHz, 3.3V LVDS, 0x5F
|
Silicon Labs SI570BAC002038DG | 48 |
| 46 | U219 | IEEE-1588 eCPRI CLK, various, 3.3V, 0x58
|
IDT 8A34001E-000AJG8 | 104 |
| 47 | J328-J331 | IEEE-1588 eCPRI 8A34001 CLK in and out SMA pairs | Rosenberger 32K10K-400L5 | 104 |
The connection details for Versal adaptive SoC U1 connected clocks described in this section are documented in the VMK180 board XDC file, referenced in Xilinx Design Constraints.