Allied Guppy, Техническое руководство, Страница: 107 / 238

Camera interfaces
GUPPY Technical Manual V4.0.1
107
All input and output signals running over the camera I/O connector are con-
trolled by an advanced feature register.
The TiedToOutput field indicates that an output and the corresponding input
share the same physical connector pin. Pins with TiedToOutput set to 1 can
be used as an output or input.
IO_INP_CTRL 1
The Polarity field determines whether the input is inverted (0) or not (1).
See Table 39: Input configuration register on page 107.
The InputMode field can be seen in the following table.
The PinState field is used to query the current status of the input.
Register Name Field Bit Description
0xF1000300 IO_INP_CTRL1 Presence_Inq [0] Indicates presence of this fea-
ture (read only)
TiedToOutput [1] only board level Guppy: Tied to
output pin x (read only)
--- [2..6] Reserved
Polarity [7] 0: Signal not inverted
1: Signal inverted
--- [8..10] Reserved
InputMode [11..15] Mode
see Table 40: Input routing on
page 108
--- [16..30] Reserved
PinState [31] RD: Current state of pin
0xF1000304 IO_INP_CTRL2 Same as
IO_INP_CTRL1 Only Guppy board level cameras
0xF1000308 IO_INP_CTRL3 Same as
IO_INP_CTRL1 Only Guppy board level cameras
0xF100030C IO_INP_CTRL4 Same as
IO_INP_CTRL1 Only Guppy board level cameras
Table 39: Input configuration register
Note
L
Make sure that output and input are not enabled at the same
time. In order to use a pin as an input (e.g. for external trig-
ger), its output driver (e.g. IntEna) needs to be switched off.