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[Anonymous]

Version: **Question: How do you keep the unused pins in HX2VL^™?Answer:

Please check Figure 1 for unused pins in HX2VL and their configuration if not used.

Figure 1. Unused Pins in HX2VL

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Pin Name	LQFP     48	QFN 28	Pin configuration if not used
SEL48/SEL27	25/24		Floating, default 12-MHz crystal or     OSC in
SELFPWR	37	22	Must be pull high (self power mode) or     low (bus power mode)
GANG	39	23	Must be pull high (Gang mode) or low     (Individual mode)
Test     I2C_SCL	27	18	Floating, default normal operation
AMBER[1]     SPI_CS	46		Floating
GREEN[1]     SPI_SK     FIXED_PORT1	45		Floating, default removable port due     to internal pull down
OVR#[1]	42	25	Floating, no over-current condition     detection due to internal pull up
PWR#[1]     I2C_SDA	43	26	Floating
AMBER[2]     SPI_DI     PWR_PIN_POL	36		Floating, default power switch enable     pin polarity is low due to internal pull     down
GREEN[2]     SPI_DO     FIXED_PORT2	35		Floating, default removable port due     to internal pull down
OVR#[2]	40	24	Floating, no over-current condition     detection due to internal pull up
PWR#[2]	41		Floating
AMBER[3]     SET_PORT_NUM2	33		Floating, port number is only decided     by AMBER[4]/SET_PORT_NUM1
GREEN[3]     FIXED_PORT3	32		Floating, default removable port due     to internal pull down
OVR#[3]	30	20	Floating, no over-current condition     detection due to internal pull up
PWR#[3]	31		Floating
AMBER[4]     SET_PORT_NUM1	33		Floating, port number is only decided     by AMBER[3]/SET_PORT_NUM2
GREEN[4]     FIXED_PORT4	32		Floating, default removable port due     to internal pull down
OVR#[4]	28	19	Floating, no over-current condition     detection due to internal pull up
PWR#[4]	29		Floating
D+/D-			unused ports D+/D- should be floating