CY7C656XX Datasheet, PDF (7/24 Pages) Cypress Semiconductor – EZ-USB HX2LP™ Low-Power USB 2.0 Hub Controller Family

CY7C656xx
Pin Description Table
Table 3. Pin Assignments^[3]
Pin
CY7C65630
Name
CY7C65620
Name
Type Default
Description
3
VCC
7
VCC
11
VCC
15
VCC
19
VCC
23
VCC
27
VCC
33
VCC
39
VCC
55
VCC
4
GND
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
GND
Power N/A V_CC. This signal provides power to the chip.
Power N/A V_CC. This signal provides power to the chip.
Power N/A V_CC. This signal provides power to the chip.
Power N/A V_CC. This signal provides power to the chip.
Power N/A V_CC. This signal provides power to the chip.
Power N/A V_CC. This signal provides power to the chip.
Power N/A V_CC. This signal provides power to the chip.
Power N/A V_CC. This signal provides power to the chip.
Power N/A V_CC. This signal provides power to the chip.
Power N/A V_CC. This signal provides power to the chip.
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 V_CC 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
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-KΩ resistor and to the
Data I/O pin of the EEPROM.
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.
Document #: 38-08037 Rev. *H
Page 7 of 24
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