Instruction manual

Camera interfaces

IntEna

Output

polarity

FVal

Output signal

Output

function

Busy

Outp

state

Opto-

coupler

iagram

e outputs are controlled via two advanced feature registers.

The Polarity flag determines whether the output is active low (0) or active high (1). The output

ode can be viewed in the table below. The current status of the output can be queried and set

ut mode. This allows for example the host computer to determine if the camera is busy

y simply polling the BUSY output.

Figure 25: Output block d

IO_OUTP_CTRL 1-2

via the PinState flag.

From firmware 2.03 onwards it is possible to read back the status of an output pin regardless of

the outp

0xF1000320 IO_OUTP_CTRL1 Presence_Inq [0] Indicates presence of

this feature (read only)

--- [1..6] -

Polarity [7] 0: active low, 1: active

high (inverting)

--- [8..10]

Output mode [11..15] Mode

--- [16..30]

PinState [31] RD: Current state of pin

WR: New state of pin

0xF1000324 IO_OUTP_CTRL2 Same as

IO_OUTP_CTRL1

Table 22: Output configuration register

MARLIN Technical Manua

Page 45