TDC-GP21 datasheet(32/91 Pages) AMSCO

32 / 91 page

TDC-GP21

acam messelectronic gmbh - Friedrich-List-Str.4 - 76297 Stutensee - Germany - www.acam.de

3-7

HITIN1

Number of expected hits on channel 1

0 = stop channel 1 disabled

1 = 1 hit

2 = 2 hits

3 = 3 hits

4 = 4 hits

5 to 7 = not permitted

CURR32K

Low current option for 32 kHz oscillator.

Basically there is no need to use high current

option (1). Low current (0) also guarantees

oscillation.

0 = low current (recommended)

1 = high current (GP2 compatibility)

SEL_START_FIRE

Fire pulse is used as TDC start. The START

input is disabled.

0 = TDC-GP2 behavior

1 = Use FIRE as Start

SEL_TSTO2

Defines functionality of EN_START pin.

Besides the GP2 functionality this pin can act

as output for various signals. If SEL_TSTO2 >

0 then EN_START = HIGH internally.

0 = GP2 functionality, High level enables

the START pin.

1 = START_TDC output

2 = STOP1 TDC output

3 = STOP2 TDC output

4 = Stop Temperature measurement

output

5 = “0” indicates TOF_DOWN being active,

“1” indicates TOF_UP being active

6 = n.c.

7 = 4 kHz (32 kHz/8) clock

SEL_TSTO1

Defines functionality of FIRE_IN pin. Besides

the GP2 functionality this pin can act as

output for various signals. If SEL_TSTO1 >1

the FIRE_IN is connected to GND internally.

0 = GP2 functionality, FIRE_IN input for

sing-around

1 = START_TDC output

2 = STOP1 TDC output

3 = STOP2 TDC output

4 = Start Temperature measurement

output

5 = EN_STOP by DELVAL output

6 = Comparator out

7 = 32 kHz clock

ID1

Free bits, e.g. to be used as identification or

version number

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

7-0

EN_INT[2:0]

DELVAL1

ID2

0 0

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