CYUSB330x/CYUSB331x

CYUSB332x/CYUSB230x

Document Number: 001-73643 Rev. *R

Page 25 of 43

Temperature range of 25 °C–70 °C and programming voltage of

2.5 V–2.7 V.

Pin-Strap Configuration

Pin-straps are supported for select product options (see Table 1

on page 5) to provide reconfigurability without an additional

EEPROM. The pin-strap configuration is enabled by pulling the

Pin #63 of 88-pin QFN HIGH. Table 6 on page 25 shows the

configuration options supported through pin-straps and the

GPIOs used for this purpose. Figure 16 and Figure 17 show how

the GPIOs need to be connected if pin-strap and LED connection

are required or only pin-strap is required.

HX3 samples pin-strap GPIOs at power-up. Floating straps are

considered as invalid and the default configuration is used. If

PIN_STRAP (Pin #63 of 88-pin QFN) is floating, all strap inputs

are considered invalid. A GPIO is considered strapped “1” or “0”

when connected with a weak pull-up (10 k

) or pull-down

(10 k

) respectively. After the initial sampling at power-up and

reset, the GPIOs are used in their normal functions.

Figure 16. Pin-Strap With LED or LED-Only Connection

Figure 17. Pin-Strap Connection

VDD_IO

To GPIO

800  –

1 k

800  –

1 k

VSS

To GPIO

10 k

10 k

Pin-Strap HIGH

with LED

Pin-Strap LOW

with LED

To GPIO

VDD_IO

10 k

10 k

To GPIO

VSS

Pin-Strap HIGH

Pin-Strap LOW

Notes

11. See Figure 16 and Figure 17.

13. VID, PORT_DISABLE, NON_REMOVABLE are group straps. If one of the pins in a group strap is floating (INVALID), that group input will be INVALID and the default

will not be overwritten.

14. These DS ports are exposed ports and the connected devices can be removed.

15. DSx_CDP_EN will be active LOW input when PWR_SW_POL is set to active LOW; similarly DSx_CDP_EN will be active HIGH input when PWR_SW_POL is set to

active HIGH.

Table 6. Pin-Strap Configuration

88-QFN

Pin #

Pin-Strap Name

Strapped ‘0’[11]

Strapped ‘1’[11]

30

I2C_DEV_ID[12]

the 68-pin QFN package.

31

PWR_SW_POL

Power enable and overcurrent will be active

LOW

Power enable and overcurrent will be active

HIGH

2

ACA_DOCK

Disabled

Enabled

84

PWR_EN_SEL

Individual

Gang

63

PIN_STRAP[13]

No pin-strapping

Pin-strapping configuration enabled

4

PORT_DISABLE[1]

PORT_DISABLE[1:0] =

b’00: DS1, DS2, DS3, DS4 active

b’01: DS1, DS2, DS3 active

b’10: DS1, DS2 active

b’11: DS1 active

Pin-straps cannot enable ports disabled by factory setting.

3

PORT_DISABLE[0]

6

NON_REMOVABLE[1][14] NON_REMOVABLE[1:0] =

b’00: DS1, DS2, DS3, DS4 removable

b’01: DS1, DS2, DS3 removable

b’10: DS1, DS2 removable

b’11: DS1 removable

5

NON_REMOVABLE[0][14]

85

VID[2]

Reserved. If PIN_STRAP is enabled and CY VID is required, strap VID[2:0] to ‘1’.

64

VID[1]

43

VID[0]

38

DS1_CDP_EN[15]

strapped ‘0’

strapped ‘1’

strapped ‘0’

strapped ‘1’

DS1 CDP enabled

DS1 CDP disabled

DS1 CDP disabled

DS1 CDP enabled

86

DS2_CDP_EN[15]

DS2 CDP enabled

DS2 CDP disabled

DS2 CDP disabled

DS2 CDP enabled

87

DS3_CDP_EN[15]

DS3 CDP enabled

DS3 CDP disabled

DS3 CDP disabled

DS3 CDP enabled

35

DS4_CDP_EN[15]

DS4 CDP enabled

DS4 CDP disabled

DS4 CDP disabled

DS4 CDP enabled