CY7C68001-56LFC Cypress Semiconductor Corp, CY7C68001-56LFC Datasheet - Page 23

• Manufacturer Part Number: CY7C68001-56LFC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C68001-56LFC

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Rad Hardened: No
• Lead Free Status / Rohs Status: Not Compliant

9.14 INTENABLE Register 0x2E
This register is used to enable/disable the various interrupt
sources, and by default all interrupts are enabled.
9.14.1 SETUP Bit 7
Setting this bit to a 1 enables an interrupt when a setup packet
is received from the USB host.
9.14.2 EP0BUF Bit 6
Setting this bit to a 1 enables an interrupt when the Endpoint 0
buffer becomes available.
9.14.3 FLAGS Bit 5
Setting this bit to a 1 enables an interrupt when an OUT endpoint
FIFO’s state transitions from empty to not-empty.
9.14.4 ENUMOK Bit 2
Setting this bit to a 1 enables an interrupt when SX2 enumeration
is complete.
9.14.5 BUSACTIVITY Bit 1
Setting this bit to a 1 enables an interrupt when the SX2 detects
an absence or presence of bus activity.
Document #: 38-08013 Rev. *K
INTENABLE
Bit #
Bit Name
Read/Write
Default
SETUP EP0
R/W
7
1
BUF
R/W
6
1
FLAGS
R/W
5
1
R/W R/W
4
1
1
3
1
1
ENUM
R/W
OK
2
1
ACTIVITY
BUS
R/W
1
1
READY
R/W
0x2E
0
1
9.14.6 READY Bit 0
Setting this bit to a 1 enables an interrupt when the SX2 has
powered on and performed an internal self-test.
9.15 DESC Register 0x30
This register address is used to write the 500-byte descriptor
RAM. The external master writes two bytes (four command data
transfers) to this address corresponding to the length of the
descriptor or VID/PID/DID data to be written. The external
master then consecutively writes that number of bytes into the
descriptor RAM in nibble format. For complete details, refer to
Enumeration
9.16 EP0BUF Register 0x31
This register address is used to access the 64-byte Endpoint 0
buffer. The external master can read or write to this register to
complete Endpoint 0 data transfers. For complete details, refer
to
9.17 SETUP Register 0x32
This register address is used to access the 8-byte setup packet
received from the USB host. If the external master writes to this
register, it can stall Endpoint 0. For complete details, refer to
Endpoint 0
9.18 EP0BC Register 0x33
This register address is used to access the byte count of
Endpoint 0. For Endpoint 0 OUT transfers, the external master
can read this register to get the number of bytes transferred from
the USB host. For Endpoint 0 IN transfers, the external master
writes the number of bytes in the Endpoint 0 buffer to transfer the
bytes to the USB host. For complete details, refer to
on page 8.
Endpoint 0
on page 8.
on page 8.
on page 8.
CY7C68001
Page 23 of 45
Endpoint 0
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