CY7C67200

Timer n Register [R/W]

Timer 0 Register 0xC010

Timer 1 Register 0xC012

Figure 16. Timer n Register

Bit #

15

14

13

12

 

11

10

9

8

Field

 

 

 

 

Count...

 

 

 

Read/Write

R/W

R/W

R/W

R/W

 

R/W

R/W

R/W

R/W

Default

1

1

1

1

 

1

1

1

1

 

 

 

 

 

 

 

 

 

 

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

1

1

1

1

 

1

1

1

1

 

 

 

 

 

 

 

 

 

 

Register Description

The Timer n Register sets the Timer n count. Both Timer 0 and Timer 1 decrement by one every 1-µs clock tick. Each can provide an interrupt to the CPU when the timer reaches zero.

Count (Bits [15:0])

The Count field sets the Timer count.

General USB Registers

There is one set of registers dedicated to general USB control. This set consists of two identical registers, one for Host/Device Port 1 and one for Host/Device Port 2. This register set has functions for both USB host and USB peripheral options and is covered in this section and summarized in Table 22. USB Host-only registers are covered in Section “USB Host Only Registers” on page 19 and USB Device-only registers are covered in Section “USB Device Only Registers” on page 28.

Table 22.USB Registers

Register Name

Address (SIE1/SIE2)

R/W

USB n Control Register

0xC08A/0xC0AA

R/W

 

 

 

USB n Control Register [R/W]

USB 1 Control Register 0xC08A

USB 2 Control Register 0xC0AA

Figure 17. USB n Control Register

Bit #

15

 

14

13

12

11

10

9

8

Field

Reserved

 

Port A

Port A

Reserved

LOA

Mode

Reserved

 

 

 

D+ Status

D– Status

 

 

Select

 

Read/Write

-

 

-

R

R

-

R/W

R/W

-

Default

X

 

X

X

X

0

0

0

0

 

 

 

 

 

 

 

 

 

 

Bit #

7

6

 

5

4

 

3

2

1

0

Field

Port A

 

Reserved

 

Port A

Suspend

Reserved

Port A

Resistors Enable

 

 

 

Force D± State

Enable

 

SOF/EOP Enable

Read/Write

R/W

-

 

-

R/W

 

R/W

R/W

-

R/W

Default

0

0

 

0

0

 

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

Register Description

The USB n Control register is used in both host and device mode. It monitors and controls the SIE and the data lines of the USB ports. This register can be accessed by the HPI interface.

Document #: 38-08014 Rev. *G

Page 18 of 78

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Cypress CY7C67200 manual Timer n Register R/W, General USB Registers, USB Registers Register Name Address SIE1/SIE2