CY7C67300
Register Description | Address (Bits [15:0]) |
The Device n Endpoint n Address register is used as the base pointer into memory space for the current Endpoint transaction. There are a total of eight endpoints for each of the two ports. All endpoints have the same definition for their Device n Endpoint n Address register.
Device n Endpoint n Count Register [R/W]
The Address field sets the base address for the current trans- action on a signal endpoint.
■Device n Endpoint 0 Count Register [Device 1: 0x0204 Device 2: 0x0284]
■Device n Endpoint 1 Count Register [Device 1: 0x0214 Device 2: 0x0294]
■Device n Endpoint 2 Count Register [Device 1: 0x0224 Device 2: 0x02A4]
■Device n Endpoint 3 Count Register [Device 1: 0x0234 Device 2: 0x02B4]
■Device n Endpoint 4 Count Register [Device 1: 0x0244 Device 2: 0x02C4]
■Device n Endpoint 5 Count Register [Device 1: 0x0254 Device 2: 0x02D4]
■Device n Endpoint 6 Count Register [Device 1: 0x0264 Device 2: 0x02E4]
■Device n Endpoint 7 Count Register [Device 1: 0x0274 Device 2: 0x02F4]
Table 65. Device n Endpoint n Count Register
Bit # | 15 | 14 | 13 |
| 12 | 11 | 10 | 9 |
| 8 |
Field |
|
|
| Reserved |
|
|
| Count... | ||
Read/Write | - | - | - |
| - | - | - | R/W |
| R/W |
Default | X | X | X |
| X | X | X | X |
| X |
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Bit # | 7 | 6 | 5 | 4 |
| 3 | 2 | 1 | 0 |
Field |
|
|
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| ...Count |
|
|
| |
Read/Write | R/W | R/W | R/W | R/W |
| R/W | R/W | R/W | R/W |
Default | X | X | X | X |
| X | X | X | X |
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Register Description
The Device n Endpoint n Count register designates the maximum packet size that can be received from the host for OUT transfers for a single endpoint. This register also designates the packet size to be sent to the host in response to the next IN token for a single endpoint. The maximum packet length is 1023 bytes in ISO mode. There are a total of eight endpoints for each of the two ports. All endpoints have the same definition for their Device n Endpoint n Count register.
Count (Bits [9:0])
The Count field sets the current transaction packet length for a single endpoint.
Reserved
Write all reserved bits with ’0’.
Document #: | Page 40 of 99 |
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