Cypress EZ-OTG CY7C67200 用户手册

Document #: 38-08014 Rev. *G

Page 27 of 78

• Host 1 SOF/EOP Count Register 0xC092

• Host 2 SOF/EOP Count Register 0xC0B2

The Host n SOF/EOP Count register contains the SOF/EOP
Count Value that is loaded into the SOF/EOP counter. This
value is loaded each time the SOF/EOP counter counts down
to zero. The default value set in this register at power-up is
0x2EE0, which will generate a 1-ms time frame. The
SOF/EOP counter is a down counter decremented at a
12-MHz rate. When this register is read, the value returned is
the programmed SOF/EOP count value. 

Count (Bits [13:0])

The Count field sets the SOF/EOP counter duration.

All reserved bits must be written as ‘0’.

• Host 1 SOF/EOP Counter Register 0xC094

• Host 2 SOF/EOP Counter Register 0xC0B4

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.

Counter (Bits [13:0])

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

Reserved

Count...

-

-

R/W

R/W

R/W

R/W

R/W

R/W

0

0

1

0

1

1

1

0

...Count

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

1

1

1

0

0

0

0

0

Reserved

Counter...

-

-

R

R

R

R

R

R

X

X

X

X

X

X

X

X

...Counter

R

R

R

R

R

R

R

R

X

X

X

X

X

X

X

X