USB7216 datasheet(18/61 Pages) MICROCHIP

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USB7216

DS00003143B-page 18



2018 - 2020 Microchip Technology Inc.

3.3.4

PF[31:3] CONFIGURATION (CFG_STRAP[2:1])

The USB7216 provides 29 programmable function pins (

PF[31:3]). These pins can be configured to 2 predefined con-

figuration via the

CFG_STRAP[2:1] pins. These configurations are selected via external resistors on the

CFG_STRAP[2:1] pins, as detailed in Table 3-4. Resistor values and combinations not detailed in Table 3-4 are reserved

and should not be used.

A summary of the configuration pin assignments for each of the 2 configurations is provided in Table 3-5. For details on

behavior of each programmable function, refer to Table 3-6.

Note:

CFG_STRAP3 is not used and must be pulled-down to ground via a 200 k resistor.

TABLE 3-4:

CFG_STRAP[2:1] RESISTOR ENCODING

Mode

CFG_STRAP2

Resistor Value

CFG_STRAP1

Resistor Value

Configuration 1

200 kΩ Pull-Down

Configuration 2

200 kΩ Pull-Down

200 kΩ Pull-Up

TABLE 3-5:

PF[31:3] FUNCTION ASSIGNMENT

Configuration 1

(SMBus/I2C)

Configuration 2

(I2S)

PF3

DP1_VCONN2

PF4

DP1_VCONN1

PF5

DP1_DISCHARGE

PF6

GPIO70

PF7

GPIO71

MIC_DET

PF8

GPIO72

PF9

GPIO73

PF10

PRT_CTL2_U3

I2S_SDI

PF11

PRT_CTL3_U3

I2S_MCLK

PF12

PRT_CTL4_U3

PF13

PRT_CTL4

PF14

PRT_CTL3

PF15

PRT_CTL2

PF16

PRT_CTL5

PF17

PRT_CTL1

PF18

ALERT0

PF19

I2S_SDO

PF20

SPI_CE_N

PF21

SPI_CLK

PF22

SPI_D0

PF23

SPI_D1

PF24

SPI_D2

PF25

SPI_D3

PF26

SLV_I2C_CLK

I2S_SCK

PF27

SLV_I2C_DATA

PRT_CTL6

PF28

PRT_CTL6

I2S_LRCK

PF29

(Note 3-1)

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