Trion T8 BGA81 Development Kit User Guide
Headers
The board contains a variety of headers to provide power, inputs, and
outputs, and to communicate with external devices or boards.
Table 1: Trion
®
T8 BGA81 Development Board Headers
Reference Designator
Description
J1
Mini-USB type B socket
J3
22-pin header for T8F81C bank 1A/1B I/O
J4
22-pin header for T8F81C bank 2A I/O
J5
22-pin header for T8F81C bank 2B I/O
J6
6-pin header to select T8F81C VDDIO2A
J8
6-pin header to select T8F81C VDDIO2B
J27
3-pin header to select T8F81C PLL input source
J29
2-pin header to provide USB 5 V for external devices or boards
Header J1
J1, a mini-USB type B socket, is the interface between the board and your
computer for power and communication. Because the USB cable provides
power to the board, the board must be connected to your computer even
if the computer (host) is not actively communicating with the board. To
operate, the board expects to receive 5 V DC (500 mA) on this interface.
Headers J3, J4, and J5
The board headers J3, J4, and J5 contain the Trion
®
T8 BGA81 Development
Board GPIO pins. These 2 x 11 (22-pin) headers connect external devices to
T8F81C I/O banks 1A/1B, bank 2A, and bank 2B, respectively.
●
J3 links to bank 1A and 1B GPIO pins. VDDIO is fixed at 3.3 V.
●
J4 links to bank 2A GPIO pins. Bank 2A VDDIO is selectable, and is brought
out to the header; it is the same as the VDDIO2A supply on the T8F81C
on page 11 for the pin you use to select
VCCIO2A power.
●
J5 links to bank 2B GPIO pins. VDDIO is selectable, and is brought out to
the header; it is the same as the VDDIO2B supply on the T8F81C device.
on page 11 for the pin you use to select VCCIO2A
power.
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