Register Name

Type

Register Width (Bits)

Register Reset

Address Offset

Physical Address

CONTROL

RW

32

0x0000 0000

0x000

0x2000 6000

CLKSEL

RW

32

0x0000 0000

0x004

0x2000 6004

RUNTIME

RW

32

0x0000 2710

0x008

0x2000 6008

MODE

RW

32

0x0000 0000

0x00C

0x2000 600C

COUNT0

RO

32

0x0000 0000

0x010

0x2000 6010

COUNT1

RO

32

0x0000 0000

0x014

0x2000 6014

COUNT2

RO

32

0x0000 0000

0x018

0x2000 6018

COUNT3

RO

32

0x0000 0000

0x01C

0x2000 601C

COUNT4

RO

32

0x0000 0000

0x020

0x2000 6020

COUNT5

RO

32

0x0000 0000

0x024

0x2000 6024

COUNT6

RO

32

0x0000 0000

0x028

0x2000 6028

COUNT7

RO

32

0x0000 0000

0x02C

0x2000 602C

Address offset

0x000

Physical address

0x2000 6000

Instance

FRQMETER

Description

control register

Type

RW

31:2

Reserved

RO
Rreturns0s

0x0000 0000

1

STOP

Writing a '1' will cause the current measurement to be stopped.
This bit is used to terminate a time measurement activity, or abort a frequency measurement
The abort process may take several clock cycles and when complete the BUSY bit will return to '0'

WO

0

0

START

Writing a '1' to this bit causes the measurement circuitry to start
This bit will go back to a '0' when the measurement is complete

RW

0

Address offset

0x004

Physical address

0x2000 6004

Instance

FRQMETER

Description

clock select register

Type

RW

RO

31:12

Reserved

RO
Rreturns0s

0x0 0000

11

MONEN

Enables the clock monitor output

RW

0

10:8

MONSEL

Selects which channel drives the clock monitor output 0 to 7.

RW

0x0

7:6

Reserved

RO

Rreturns0s

0x0

5

REFSEL1

When in timer mode allows the ATPG (Corners) / clkref3 (controller) clock input to clock the channel counters. This clock input is expected to be sourced from an on-chip PLL to support at-speed testing. This allows the timer to clocked off a much higher clock frequency than the reference counter that is limited to 100MHz.

RW

0

4

REFSEL0

Selects the reference input
0: clkref1
1: clkref2

RW

0

3

Reserved

RO

Rreturns0s

0x0

1:0

CLKSEL

Selects which group of clock inputs are selected by the channels, control s the input multiplexer

RW

0x0

Address offset

0x008

Physical address

0x2000 6008

Instance

FRQMETER

Description

Type

RW

31:24

Reserved

RO
Rreturns0s

0x00

23:0

REFCOUNT

Sets the reference count.
When set to 0x000000 the timer will run forever i.e. until stopped by the CPU. This setting should not be used for frequency measurement.

RW

0x00 2710

Address offset

0x00C

Physical address

0x2000 600C

Instance

FRQMETER

Description

Sets the measurement mode of channel:
2'b00: Disabled
2'b01: Frequency Mode
2'b11: Time Mode
2'b10: Reserved
When N is less than 8 unimplemented channels will return disabled and cannot be enabled

Type

RW

31:16

Reserved

RO
Rreturns0s

0x0000

15:14

Channel7

RW

0x0

13:12

Channel6

RW

0x0

11:10

Channel5

RW

0x0

9:8

Channel4

RW

0x0

7:6

Channel3

RW

0x0

5:4

Channel2

RW

0x0

3:2

Channel1

RW

0x0

1:0

Channel0

RW

0x0

Address offset

0x010

Physical address

0x2000 6010

Instance

FRQMETER

Description

Type

RO

31:24

Reserved

RO
Rreturns0s

0x00

23:0

COUNT

Returns the count value

RO

0x00 0000

Address offset

0x014

Physical address

0x2000 6014

Instance

FRQMETER

Description

Type

RO

31:24

Reserved

RO

0x00

23:0

COUNT

Returns the count value

RO

0x00 0000

Address offset

0x018

Physical address

0x2000 6018

Instance

FRQMETER

Description

Type

RO

31:24

Reserved

RO

0x00

23:0

COUNT

Returns the count value

RO

0x00 0000

Address offset

0x01C

Physical address

0x2000 601C

Instance

FRQMETER

Description

Type

RO

31:24

Reserved

RO

0x00

23:0

COUNT

Returns the count value

RO

0x00 0000

Address offset

0x020

Physical address

0x2000 6020

Instance

FRQMETER

Description

Type

RO

31:24

Reserved

RO

0x00

23:0

COUNT

Returns the count value

RO

0x00 0000

Address offset

0x024

Physical address

0x2000 6024

Instance

FRQMETER

Description

Type

RO

31:24

Reserved

RO

0x00

23:0

COUNT

Returns the count value

RO

0x00 0000

Address offset

0x028

Physical address

0x2000 6028

Instance

FRQMETER

Description

Type

RO

31:24

Reserved

RO

0x00

23:0

COUNT

Returns the count value

RO

0x00 0000

Address offset

0x02C

Physical address

0x2000 602C

Instance

FRQMETER

Description

Type

RO

31:24

Reserved

RO

0x00

23:0

COUNT

Returns the count value

RO

0x00 0000