CY7C656XX CYPRESS [Cypress Semiconductor], CY7C656XX Datasheet - Page 7

• Manufacturer Part Number: CY7C656XX
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-08037 Rev. *H
Pin Description Table
Table 3. Pin Assignments
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
SPI Interface
the overcurrent pin floating; it is an input.
Pin
11
15
19
23
27
33
39
55
12
16
20
24
28
34
40
47
50
56
21
22
46
45
26
25
48
49
3
7
4
8
VBUSPOWER VBUSPOWER Input
CY7C65630
SELFPWR
SPI_SCK
RESET#
SPI_CS
SPI_SD
XOUT
Name
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
XIN
[3]
CY7C65620
SELFPWR
SPI_SCK
RESET#
SPI_CS
SPI_SD
Name
XOUT
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
XIN
Output
Output
Output
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Power
Type Default
Input
Input
Input
I/O/Z
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
O
O
Z
V
V
V
V
V
V
V
V
V
V
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
GND. Connect to Ground with as short a path as possible.
24-MHz Crystal IN or External Clock Input.
24-MHz Crystal OUT. (NC if external clock is used)
Active LOW Reset. This pin resets the entire chip. It is normally
tied to V
0.1-µF capacitor. Other than this, no other special power up
procedure is required.
Self Power. Indicator for bus or self powered. 0 is bus powered,
1 is self powered.
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 Chip Select. Connect to CS pin of the EEPROM.
SPI Clock. Connect to EEPROM SCK pin.
SPI Dataline Connect to GND with 15-KΩ resistor and to the
Data I/O pin of the EEPROM.
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
. This signal provides power to the chip.
. This signal provides power to the chip.
. This signal provides power to the chip.
. This signal provides power to the chip.
. This signal provides power to the chip.
. This signal provides power to the chip.
. This signal provides power to the chip.
. This signal provides power to the chip.
. This signal provides power to the chip.
. This signal provides power to the chip.
CC
through a 100K resistor, and to GND through a
Description
CY7C656xx
Page 7 of 24
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