USB7216CSLASHKDX datasheet(18/60 Pages) MICROCHIP

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USB7216C

DS00003851A-page 18



2021 Microchip Technology Inc.

3.3.3

BATTERY CHARGING CONFIGURATION (

CFG_BC_EN)

The

CFG_BC_EN configuration strap is used to configure the battery charging port settings of the device to one of six

settings. These modes are selected by the configuration of an external resistor on the

CFG_BC_EN pin. The resistor

options are a 200 kΩ pull-down, 200 kΩ pull-up, 10 kΩ pull-down, 10 kΩ pull-up, 10 Ω pull-down, and 10 Ω pull-up, as

shown in Table 3-3.

3.3.4

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

The USB7216C 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.

TABLE 3-2:

CFG_NON_REM RESISTOR ENCODING

CFG_NON_REM Resistor Value

Setting

200 kΩ Pull-Down

All ports removable

200 kΩ Pull-Up

Port 1 non-removable

10 kΩ Pull-Down

Ports 1, 2 non-removable

10 kΩ Pull-Up

Ports 1, 2, 3 non-removable

10 Ω Pull-Down

Ports 1, 2, 3, 4 non-removable

10 Ω Pull-Up

Ports 1, 2, 3, 4, 5, 6 non-removable

TABLE 3-3:

CFG_BC_EN RESISTOR ENCODING

CFG_BC_EN Resistor Value

Setting

200 kΩ Pull-Down

Battery charging not enable on any port

200 kΩ Pull-Up

BC1.2 DCP and CDP battery charging enabled on Port 1

10 kΩ Pull-Down

BC1.2 DCP and CDP battery charging enabled on Ports 1, 2

10 kΩ Pull-Up

BC1.2 DCP and CDP battery charging enabled on Ports 1, 2, 3

10 Ω Pull-Down

BC1.2 DCP and CDP battery charging enabled on Ports 1, 2, 3, 4

10 Ω Pull-Up

BC1.2 DCP and CDP battery charging enabled on Ports 1, 2, 3, 4, 5, 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

USB7216C/KDX 数据表(PDF) 18 Page - Microchip Technology

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