CY7C68300A-56PVXC Cypress Semiconductor Corp, CY7C68300A-56PVXC Datasheet - Page 18

• Manufacturer Part Number: CY7C68300A-56PVXC
• Description: IC USB 2.0 BRIDGE BULK 56SSOP
• Manufacturer: Cypress Semiconductor Corp
• Series: CY7Cr

Specifications of CY7C68300A-56PVXC

• Controller Type: USB 2.0 Controller
• Interface: I²C
• Voltage - Supply: 3.15 V ~ 3.45 V
• Current - Supply: 50mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 56-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 8-2 is a plot of the solder mask pattern and Figure 8-3
is an X-Ray image of the assembly (darker areas indicate
solder.)
Document #: 38-08031 Rev. *C
Figure 8-2. Plot of the Solder Mask (White Area)
Figure 8-3. X-ray Image of the Assembly
9.0
Certain design considerations must be followed to ensure
proper operation of the CY7C68300A.
9.1
Power must be applied to the CY7C68300A before, or at the
same time as the ATA/ATAPI device. If power is supplied to
the drive first, the CY7C68300A will start up in an undefined
state. Designs that utilize separate power supplies for the
CY7C68300A and the ATA/ATAPI device are not recom-
mended.
9.2
The CY7C68300A does not fully support IDE removable
media devices. Changes in media state are not reported to the
operating system so users will be unable to eject/reinsert
media properly. This may result in lost or corrupted data.
9.3
The size of the ATA/ATAPI device’s buffer can greatly affect
the overall data transfer performance. Care should be taken to
ensure that devices have large enough buffers to handle the
flow of data to/from the drive. The exact buffer size needed
depends on a number of variables, but a good rule of thumb is:
where (other) may include things like time to switch heads,
power-up a laser, etc. Devices with buffers that are too small
to handle the extra data may perform considerably slower than
expected.
(aprox min buffer size) = (data rate) * (seek time + rota-
tion time + other)
Proper Power-up Sequence
IDE Removable Media Devices
Devices With Small Buffers
Other Design Considerations
CY7C68300A
Page 18 of 21