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USB5734 数据表(PDF) 18 Page - Microchip Technology

部件名 USB5734
功能描述  4-Port SS/HS USB Controller Hub
PDF  61 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB5734 数据表(HTML) 18 Page - Microchip Technology

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USB5734
DS00001854D-page 18
 2015-2016 Microchip Technology Inc.
3.4.2
PORT DISABLE CONFIGURATION (PRT_DIS_P[4:1] / PRT_DIS_M[4:1])
The PRT_DIS_P[4:1] and PRT_DIS_M[4:1] configuration straps are used in conjunction to disable the related port (4-1).
For PRT_DIS_Px (where x is the corresponding port 4-1):
0
= Port x D+ Enabled
1
= Port x D+ Disabled
For PRT_DIS_Mx (where x is the corresponding port 4-1):
0
= Port x D- Enabled
1
= Port x D- Disabled
3.4.3
NON-REMOVABLE PORT CONFIGURATION (CFG_NON_REM)
The CFG_NON_REM configuration strap is used to configure the non-removable port settings of the device to one of
five settings. These modes are selected by the configuration of an external resistor on the CFG_NON_REM pin. The
resistor options are a 200 kΩ pull-down, 200 kΩ pull-up, 10 kΩ pull-down, 10 kΩ pull-up, and 10 Ω pull-down, as shown
in Table 3-13.
TABLE 3-12:
SPI/SMBUS/I2C/UART MODE PIN ASSIGNMENTS
Pin
SPI
Mode
SMBus Slave Enable
Mode
I2C Bridging
Mode
UART
Mode
45
SPI_CE_N
CFG_NON_REM
CFG_NON_REM
CFG_NON_REM
44
SPI_DI
CFG_BC_EN
CFG_BC_EN
CFG_BC_EN
43
SPI_DO
I2C_SLV_CFG0
-UART_TX
42
SPI_CLK
I2C_SLV_CFG1
-
UART_RX
Note:
Both PRT_DIS_Px and PRT_DIS_Mx (where x is the corresponding port) must be tied to 3.3 V to disable
the associated downstream port. Disabling the USB 2.0 port will also disable the corresponding USB 3.1
Gen 1 port.
TABLE 3-13:
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
Port 1, 2 non-removable
10 kΩ Pull-Up
Port 1, 2, 3, non-removable
10 Ω Pull-Down
Port 1, 2, 3, 4 non-removable



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