VC7203 GTX Transceiver Characterization Board
27
UG957 (v1.0) October 10, 2012
Detailed Description
A royalty-free software driver named Virtual COM Port (VCP) is available from Silicon
Laboratories. This driver permits the CP2103 USB-to-UART bridge to appear as a COM
port to the host computer communications application software (for example,
HyperTerminal or TeraTerm). The VCP driver must be installed on the host computer prior
to establishing communications with the VC7203 board.
FPGA Mezzanine Card HPC Interface
Callout
, and
The VC7203 board features three high pin count (HPC) connectors as defined by the VITA
57.1 FPGA Mezzanine card (FMC) specification. The FMC HPC connector is a 10 x 40
position socket. See
Appendix B, VITA 57.1 FMC Connector Pinouts
for a cross-reference
of signal names to pin coordinates.
FMC1 HPC connector JA2 provides connectivity for:
•
69 differential user defined pairs:
•
34 LA pairs
•
18 HA pairs
•
17 HB pairs
•
2 differential clocks
FMC2 HPC connector JA3 provides connectivity for:
•
80 differential user defined pairs:
•
34 LA pairs
•
24 HA pairs
•
22 HB pairs
•
4 differential clocks
FMC3 HPC connector JA4 provides connectivity for:
•
65 differential user defined pairs:
•
34 LA pairs
•
16 HA pairs
•
15 HB pairs
•
4 differential clocks
Note:
FMC3 is not supported by the XC7V4
8
5T device. The IO banks that connect to FMC3 are not
available in this density.
Note:
The V
ADJ
voltage on the three FMC HPC connectors tracks VCCO_HP.
Table 1-17:
CP2103 USB-to-UART Bridge User GPIO
U1 FPGA Pin
Net Name
U26 Pin
B28
USB_GPIO_0
19
B29
USB_GPIO_1
18
A31
USB_GPIO_2
17
A32
USB_GPIO_3
16
