Cypress EZ-USB HX2LP, CY7C656xx manual Pin Description Table

PRELIMINARYCY7C656xx

7.0Pin Description Table

Table 7-1below displays the pin assignments.

Table 7-1. Pin Assignments [3]

CY7C65640B /	CY7C65620
CY7C65630 Pin	Pin	Name	Type	Default	Description
3	3	VCC	Power	N/A	VCC. This signal provides power to the chip.
7	7	VCC	Power	N/A	VCC. This signal provides power to the chip.
11	11	VCC	Power	N/A	VCC. This signal provides power to the chip.
15	15	VCC	Power	N/A	VCC. This signal provides power to the chip.
19	19	VCC	Power	N/A	VCC. This signal provides power to the chip.
23	23	VCC	Power	N/A	VCC. This signal provides power to the chip.
27	27	VCC	Power	N/A	VCC. This signal provides power to the chip.
33	33	VCC	Power	N/A	VCC. This signal provides power to the chip.
39	39	VCC	Power	N/A	VCC. This signal provides power to the chip.
55	55	VCC	Power	N/A	VCC. This signal provides power to the chip.
4	4	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
8	8	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
12	12	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
16	16	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
20	20	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
24	24	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
28	28	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
34	34	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
40	40	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
47	47	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
50	50	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
56	56	GND	Power	N/A	GND. Connect to Ground with as short a path as possible.
21	21	XIN	Input	N/A	24-MHz Crystal IN or External Clock Input.
22	22	XOUT	Outpu	N/A	24-MHz Crystal OUT.
			t
46	46	RESET#	Input	N/A	Active LOW Reset. This pin resets the entire chip. It is
					normally tied to VCC through a 100K resistor, and to GND
					through a 0.1-µF capacitor. Other than this, no other special
					power-up procedure is required.
45	45	SELFPWR	Input	N/A	Indicator for bus/self powered. 0 is bus powered, 1 is self-
					powered.
26	26	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 will do so after the external EEPROM is
					read, unless it is put into a high-speed mode by the upstream
					hub).
SPI Interface
25	25	SPI_CS	O	O	SPI Chip Select. Connect to CS pin of the EEPROM.
48	48	SPI_SCK	O	O	SPI Clock. Connect to EEPROM SCK pin.
49	49	SPI_SD	I/O/Z	Z	SPI Dataline Connect to GND with 15-KΩresistor and to the
					Data I/O pins of the EEPROM.
Note:

3.Unused port DD+/DD– lines can be left floating. The port power, amber, and green LED pins should be left unconnected, and the overcurrent pin should be tied HIGH. The overcurrent pin is an input and it should not be left floating.

Document #: 38-08037 Rev. *D Page 8 of 23