USB5906CSLASHKD datasheet(30/64 Pages) MICROCHIP

30 / 64 page

USB5906

DS00002242E-page 31



2016-2021 Microchip Technology Inc.

8.1.2

INTERNAL USB3.1 GEN 1 MULTIPLEXER, “TYPE-C CONTROL MODE 1”

“Type-C Control Mode 1” is enabled by setting the

ALT_MUX_EN signal low or leaving it floating. While in “Type-C Con-

trol Mode 1”, the

C_ATTACH0 and AB0 pins are used together to signal to the hub when a valid USB Type-C connection

has been detected and in what orientation the connection has been detected. This functionality requires an external

USB Type-C controller such as a Microchip UTC2000 to monitor the USB Type-C receptacle for a valid attach. These

signal are used to enable/disable the USB 3.1 Gen 1 PHYs appropriately according to the detected Type-C attach and

orientation. Unused USB 3.1 Gen 1 PHYs are disabled to conserve power.

The polarity of the

C_ATTACH0 pins and AB0 are controlled by the CC_POL pin. See Table 3-6 for details.

A diagram of a USB Type-C Upstream Facing Port with the USB5906, Microchip UTC2000, and internal multiplexer

operating in “Type-C Control Mode 1” is shown in Figure 8-2.

8.1.3

INTERNAL USB 3.1 GEN 1 MULTIPLEXER, “TYPE-C CONTROL MODE 2”

“Type-C Control Mode 2” is enabled by setting the

ALT_MUX_EN signal high. While in “Type-C Control Mode 2”, the

ATTACH_MUX0A and ATTACH_MUX0B pins are used to signal to the hub when a valid USB Type-C connection has

been detected and in what orientation the connection has been detected. This functionality requires an external USB

Type-C controller (this mode not directly supported by UTC2000) to monitor the USB Type-C receptacle for a valid

attach. These signal are used to enable/disable the USB 3.1 Gen 1 PHYs appropriately according to the detected Type-

C attach and orientation. Unused USB 3.1 Gen 1 PHYs are disabled to conserve power.

The polarity of the

ATTACH_MUX0A pins and ATTACH_MUX0B are controlled by the CC_POL pin. See Table 3-6 for

details.

A diagram of a USB Type-C Upstream Facing Port with internal multiplexer operating in “Type-C Control Mode 2” with

the USB5906 is shown in Figure 8-3.

FIGURE 8-2:

UFP TYPE-C PORT WITH MICROCHIP UTC2000 & EXTERNAL MUX (MODE 1)

UTC2000

UFP Mode

USB Type-C®

External Mux

Upstream Port

VBUS

SSTXA+

SSTXA-

SSRXA+

SSRXA-

SSTXB+

SSTXB-

SSRXB+

SSRXB-

D+

D-

CC1

CC2

CC1

CC2

CONNECTED#

MUX

VBUS_DET

SSTX+

SSTX-

SSRX+

SSRX-

D+

D-

C_ATTACH0

CC_PO L

ALT_MUX_EN

SSTXA+

SSTXA-

SSRXA+

SSRXA-

SSTXB+

SSTXB-

SSRXB+

SSRXB-

SSTX+

SSTX-

SSRX+

SSRX-

USB Type-C

3.3V

PLUG_

ORIENTATI ON#

A/B

3.3V

USB5906C/KD 数据表(PDF) 30 Page - Microchip Technology

USB5906C/KD 数据表(HTML) 30 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

数据表下载