TDC-GPX datasheet(18/54 Pages) AMSCO

18 / 54 page

TDC-GPX

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1.7 Register settings

In depends on the operating mode whether bits are relevant or not. Especially the read data structure depends on

the operating mode.

1.7.1 Write Registers

Service bits are for acam testing and security purposes only, Please use the recommended values.

These registers can also be read back.

ROsc

‘1’ = start ring oscillator

RiseEn0

‘1’ enable rising edge sensitivity on DStart input

FallEn0

‘1’ enable falling edge sensitivity on DStart input

RiseEn1

‘1’ enable rising edge sensitivity on DStop1 input

FallEn1

‘1’ enable falling edge sensitivity on DStop1 input

RiseEn2

‘1’ enable rising edge sensitivity on DStop2 input

FallEn2

‘1’ enable falling edge sensitivity on DStop2 input

7 – 9

HQSel

Service bits, must be set to ‘001’

10 – 18

TRiseEn

‘1’ enables rising edges for the TTL inputs

Bit 10 = TStart, Bit 11 = TStop1 … Bit 18 = TStop8

19 – 27

TFallEn

‘1’ enables falling edges for the TTL inputs

Bit 19 = TStart, Bit 20 = TStop1 … Bit 27 = TStop8

0 – 3

Adj0

Channel adjustment bits channel 0 (Start)

4 – 7

Adj1

Channel adjustment bits channel 1 (R-Mode = 2, G-Mode = 0)

8 – 11

Adj2

Channel adjustment bits channel 2 (R-Mode = 6, G-Mode = 5)

12 – 15

Adj3

Channel adjustment bits channel 3 (R-Mode = 0, G-Mode = 0)

16 – 19

Adj4

Channel adjustment bits channel 4 (R-Mode = 2, G-Mode = 5)

20 – 23

Adj5

Channel adjustment bits channel 5 (R-Mode = 6, G-Mode = 0)

24 – 27

Adj6

Channel adjustment bits channel 6 (R-Mode = 0, G-Mode = 5)

Adjustment bits recommendation:

R-Mode: Adj1 = Adj4 = Adj7 = 2, Adj 2 = Adj 8 = 6, Adj5 = 6

G-Mode: Adj2 = Adj4 = Adj6 = Adj8 = 5.

G-Mode

‘1’ = switch on G-Mode

I-Mode

‘1’ = switch on I-Mode

R-Mode

‘1’ = switch on R-Mode

3 – 11

Disable

‘1’ = disable channel

Bit 3 = channel 0 (Start) … Bit 11 = channel 8

12 – 15

Adj7

Channel adjustment bits channel 7 (R-Mode = 2, G-Mode = 0)

16 – 19

Adj8

Channel adjustment bits channel 8 (R-Mode = 6, G-Mode = 5)

20 – 21

DelRise1

Service bits, set ‘0’

22 – 23

DelFall1

Service bits, set ‘0’

24 – 25

DelRise2

Service bits, set ‘0’

26 – 27

DelFall2

Service bits, set ‘0’

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