TPCE636 User Manual Issue 1.0.2
Page 70 of 104
Digital Interface to FireFly Connector
7.11
The digital I/O Pins of the TPCE636 Firefly Back I/O connector are directly routed to the User FPGA (Kintex-
7). The I/O functions of these FPGA pins are directly dependent on the configuration of the FPGA.
The Kintex-7 VCCO voltage for these pins is set to 2.5V, so only the 2.5V I/O standards LVCMOS25,
LVTTL25 and LVDS25 are possible when using the TPCE636 FireFly Back I/O interface.
Signal Name
Bank
VCCO
Pin
IO Standard
for example
DI
13
2.5V
M24
LVDS25
DIG_IO_00-
13
2.5V
L24
LVDS25
DI
16
2.5V
E10
LVDS25
DIG_IO_01-
16
2.5V
D10
LVDS25
DI
13
2.5V
N19
LVDS25
DIG_IO_02-
13
2.5V
M20
LVDS25
DI
12
2.5V
Y25
LVDS25
DIG_IO_04-
12
2.5V
Y26
LVDS25
Table 7-18 : FireFly Back I/O Interface