CY7C67300

Host n SOF/EOP Counter Register [R]

Host 1 SOF/EOP Counter Register 0xC094

Host 2 SOF/EOP Counter Register 0xC0B4

Table 60. Host n SOF/EOP Counter Register

Bit #

15

 

14

13

12

11

 

10

9

8

Field

Reserved

 

 

 

 

Counter...

 

 

Read/Write

-

 

-

R

R

R

 

R

R

R

Default

X

 

X

X

X

X

 

X

X

X

 

 

 

 

 

 

 

 

 

 

 

Bit #

7

6

5

4

 

3

2

1

0

Field

 

 

 

 

...Counter

 

 

 

Read/Write

R

R

R

R

 

R

R

R

R

Default

X

X

X

X

 

X

X

X

X

 

 

 

 

 

 

 

 

 

 

Register Description

The Host n SOF/EOP Counter register contains the current value of the SOF/EOP down counter. This value can be used to determine the time remaining in the current frame.

Host n Frame Register [R]

Host 1 Frame Register 0xC096

Host 2 Frame Register 0xC0B6

Table 61. Host n Frame Register

Counter (Bits [13:0])

The Counter field contains the current value of the SOF/EOP down counter.

Bit #

15

14

13

12

11

10

9

8

Field

 

 

Reserved

 

 

 

Frame...

 

Read/Write

-

-

-

-

-

R

R

R

Default

0

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

Bit #

7

6

5

4

 

3

2

1

0

Field

 

 

 

 

...Frame

 

 

 

Read/Write

R

R

R

R

 

R

R

R

R

Default

0

0

0

0

 

0

0

0

0

 

 

 

 

 

 

 

 

 

 

Register Description

The Host n Frame register maintains the next frame number to be transmitted (current frame number + 1). This value is updated after each SOF transmission. This register resets to 0x0000 after each CPU write to the Host n SOF/EOP Count register (Host 1: 0xC092 Host 2: 0xC0B2).

Frame (Bits [10:0])

The Frame field contains the next frame number to be trans- mitted.

Reserved

Write all reserved bits with ’0’.

Document #: 38-08015 Rev. *J

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Cypress CY7C67300 manual Host n SOF/EOP Counter Register R, Host n Frame Register R