 2014 Microchip Technology Inc.

DS50002306A-page 14

To use the strapping option, set the Config. Select switch to "Strap", position 2-3. The

green LED will light. Select the desired CFG_BC and CFG_Non-Rem options by

enabling only one position for each of the Config_Bat_Chrg Select and Con-

fig_Non_Rem Select switches (SW5 and SW6).

FIGURE 2-3:

STRAPPING OPTIONS

2.1.5

Port Power Options: Port Enable and Port Disable Select

Any downstream facing port on the EVB-USB5744 can be disabled if desired. When

both DP & DM signals are pulled up to +3.3V, by default the USB5744 automatically

disables the port, reports the corrected number of available ports to the host, and drives

the PRT_CTRL line for the disabled port(s) low.

To enable a port, use its Port Enable switch to select the “EN.” position. The associated

“Enabled” LED will light.

To disable a port, slide its Port Enable switch to the “Dis.” position. The “Enabled” LED

will extinguish.

TABLE 2-1:

STRAPPING OPTIONS FOR BATTERY CHARGING

SW5 Position

Configuration

1

No BC Enabled

2

Port 1 is BC Enabled

3

Port 1 & 2 are BC Enabled

4

Port 1, 2 & 3 are BC Enabled

5

Port 1, 2, 3 & 4 are BC Enabled [default]

6

Reserved

TABLE 2-2:

STRAPPING OPTIONS FOR PORT REMOVABLE

SW6 Position

Configuration

1

All ports are Removable [default]

2

Port 1 is Non-Removable

3

Port 1 & 2 are Non-Removable

4

Port 1, 2 & 3 are Non-Removable

5

Port 1, 2, 3 & 4 are Non-Removable

6

Reserved