CY3687 Cypress Semiconductor Corp, CY3687 Datasheet - Page 8

• Manufacturer Part Number: CY3687
• Description: KIT DEV MOBL-USB FX2LP18
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB HX2LP™r

Specifications of CY3687

• Main Purpose: Interface, USB 2.0 Host/Controller
• Utilized Ic / Part: CY7C68053
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

3.12.4 Endpoint Configurations (High Speed Mode)
Endpoints 0 and 1 are the same for every configuration. Endpoint
0 is the only CONTROL endpoint, and endpoint 1 can be either
BULK or INTERRUPT. The endpoint buffers can be configured
in any one of the 12 configurations shown in the vertical columns
of
first 64 bytes of each buffer are used. For example, in high speed
3.12.5 Default Full Speed Alternate Settings
Table 4. Default Full Speed Alternate Settings
Document # 001-06120 Rev *J
Notes
ep0
ep1out
ep1in
ep2
ep4
ep6
ep8
3. ‘0’ means ‘not implemented.’
4. ‘2×’ means ‘double buffered.’
Figure
Alternate Setting
5. When operating in full speed BULK mode only the
EP0 IN&OUT
EP1 OUT
EP1 IN
EP8
EP2
EP4
EP6
512
512
512
512
512
512
512
512
1
64
64
64
EP4
EP6
EP2
512
512
512
512
512
512
512
512
64
64
64
2
64
0
0
0
0
0
0
0
EP2
EP4
EP6
1024
1024
512
512
512
512
64
64
64
3
64
64 bulk
64 bulk
64 bulk out (2×)
64 bulk out (2×)
64 bulk in (2×)
64 bulk in (2×)
Figure 5. Endpoint Configuration
[3, 4]
EP2
EP8
EP6
512
512
512
512
512
512
512
512
64
64
64
4
1
EP2
EP6
512
512
512
512
512
512
512
512
64
64
64
5
EP2
EP6
1024
1024
the maximum packet size is 512 bytes, but in full speed it is 64
bytes. Even though a buffer is configured to be a 512 byte buffer,
in full speed only the first 64 bytes are used. The unused
endpoint buffer space is not available for other operations. An
example endpoint configuration is:
EP2–1024 double buffered; EP6–512 quad buffered (column 8).
512
512
512
512
64
64
64
6
64
64 int
64 int
64 int out (2×)
64 bulk out (2×)
64 int in (2×)
64 bulk in (2×)
EP2
EP6
EP8
1024
1024
512
512
512
64
64
64
512
7
EP2
1024
1024
EP6
512
512
512
64
64
64
512
8
2
EP2
EP6
1024
1024
1024
1024
64
64
64
9
EP2
EP6
EP8
512
512
512
512
512
512
512
512
64
64
64
10
64
64 int
64 int
64 iso out (2×)
64 bulk out (2×)
64 iso in (2×)
64 bulk in (2×)
EP2 EP2
EP8
1024
1024
1024
1024
64
64
64
512
512
11
CY7C68053
1024
1024
1024
1024
12
64
64
64
3
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