CY7C65620/CY7C65630

Document Number: 38-08037 Rev. *T

Page 9 of 29

Pin Description

Table 3. Pin Assignments[3]

Pin

CY7C65630

Name

CY7C65620

Name

Type Default

Description

3

VCC

VCC

Power

N/A

7

VCC

VCC

Power

N/A

11

VCC

VCC

Power

N/A

15

VCC

VCC

Power

N/A

19

VCC

VCC

Power

N/A

23

VCC

VCC

Power

N/A

27

VCC

VCC

Power

N/A

33

VCC

VCC

Power

N/A

39

VCC

VCC

Power

N/A

55

VCC

VCC

Power

N/A

4

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

8

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

12

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

16

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

20

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

24

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

28

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

34

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

40

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

47

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

50

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

56

GND

GND

Power

N/A

GND. Connect to ground with as short a path as possible.

21

XIN

XIN

Input

N/A

24 MHz crystal IN or external clock input.

22

XOUT

XOUT

Output

N/A

24 MHz crystal OUT. (NC if external clock is used)

46

RESET#

RESET#

Input

N/A

Active LOW reset. This pin resets the entire chip. It is normally tied to

No other special power up procedure is required.

45

SELFPWR

SELFPWR

Input

N/A

Self power. Indicator for bus or self powered. 0 is bus powered, 1 is self

powered.

26

VBUSPOWER

VBUSPOWER

Input

N/A

VBUS. Connect to the VBUS pin of the upstream connector. This signal

indicates to the hub that it is in a connected state, and may enable the

D+ pull up resistor to indicate a connection. (The hub does so after the

external EEPROM is read).

SPI Interface

25

SPI_CS

SPI_CS

Output

O

SPI chip select. Connect to CS pin of the EEPROM.

48

SPI_SCK

SPI_SCK

Output

O

SPI clock. Connect to EEPROM SCK pin.

49

SPI_SD

SPI_SD

I/O/Z

Z

SPI dataline connect to GND with 15 K



of the EEPROM.

Upstream Port

17

D–

D–

I/O/Z

Z

Upstream D– Signal.

18

D+

D+

I/O/Z

Z

Upstream D+ Signal.

Note

3. Unused port DD+/DD– lines can be left floating. Leave the port power, amber, and green LED pins unconnected, and deassert the overcurrent pin. Do not leave the

overcurrent pin floating; it is an input.