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

 

 

 

 

 

 

 

 

 

 

 

Bit #

7

6

5

4

 

3

2

1

0

Field

 

 

 

 

...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

 

 

 

 

 

 

 

 

 

 

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 #: 38-08015 Rev. *J

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Cypress CY7C67300 manual Device n Endpoint n Count Register R/W