CYUSB330x/CYUSB331x

CYUSB332x/CYUSB230x

Document Number: 001-73643 Rev. *R

Page 28 of 43

16

7

SUSPEND_INDICATOR_DISABLE

0

0: Suspend indicator enabled

1: Suspend indicator disabled

6

SS_US_DISABLE

0

Hub mode of operation (USB 3.0 or USB 2.0)

0: USB 3.0 hub and USB 2.0 hub enabled

1: USB 3.0 hub disabled and USB 2.0 hub enabled

5

PWR_EN_POLARITY

0

Power switch control output polarity

0: Active LOW

1: Active HIGH

4:0 PORT_POLARITY

b’00000 USB 2.0 DP and DM swapped

bit[4:0]=DS4, DS3, DS2, DS1, US

1: Port polarity swapped

0: Port polarity not swapped

17

7:5 Reserved

0

Reserved

4

BC_ENABLE

1

0: BC v1.2 disabled

1: BC v1.2 enabled

3

ACA_DOCK

0

If this bit is set, enable ACA-Dock on the US port

2

APPLE_XA

0

0: Max limit for Apple charging 2.1 A

1: Max limit for Apple charging 1 A

1

Reserved

0

Reserved

0

GHOST_CHARGE_EN

1

0: Ghost Charging disabled

1: Ghost Charging enabled

18

7:4 CDP_EN[3:0]

b’1111 Per-port charging setting

bit[7:4]=DS4, DS3, DS2, DS1

0: CDP disabled

1: CDP enabled

3:0 DCP_EN[3:0]

b’0000 Per-port charging setting

bit[3:0]=DS4, DS3, DS2, DS1

0: DCP disabled

1: DCP enabled

19

7

EMBEDDED_HUB

0

If this bit is set, the US is as an embedded port and VBUS

connected to VBUS_US pin is ignored.

6

ILLEGAL_DESCRIPTOR

1

If this bit is set, the USB 2.0 hub controller will accept both 0x00

and 0x29 as valid descriptor types. If '0', only 0x29 will be

accepted as a valid descriptor type.

5

Reserved

1

Reserved

4

OC_POLARITY

0

Overcurrent input polarity

0: Active LOW

1: Active HIGH

3:0 OC_TIMER

b’1000 Time in milliseconds for which the overcurrent inputs will be

filtered

20

7:0 Reserved

0

Reserved

21

7:4 Reserved

0

Reserved

3

STRING_DESCRIPTOR_ENABLE[16]

0

0: String descriptor support is disabled

1: String descriptor support is enabled

When string descriptors are not supported, the hub controller

returns a non-zero index (compile-time programmable) for each

string which is supported, and 0x00 for each string not

supported, as indicated by this field.

2:0 Reserved

0

Reserved

22

7:0 Reserved

0

Reserved

Note

16. When the string descriptor supports LangID, Manufacturer, Product and Serial Number, the serial number must be unique for each device.

Table 7. EEPROM Map (continued)

Name

Default

Description