camisp-034
cam_global_reset (OUT)
cam_shutter (OUT)
cam_strobe (OUT)
OPEN
CLOSE
OPEN
ERS
RESET
INTEGRATION
READOUT
ERS
A. cam_global_reset is set as a camera ISP output signal
cam_global_reset (INPUT)
cam_shutter (OUT)
cam_strobe (OUT)
OPEN
CLOSE
OPEN
ERS
RESET
INTEGRATION
READOUT
ERS
B. cam_global_reset is set as a camera ISP input signal
Register write
OFF
ON
OFF
ON
OFF
OFF
Max integration time
Effective integration time
Max integration time
Effective integration time
Electronic
shutter
Mechanical shutter
Electronic shutter
Electronic
shutter
Mechanical shutter
Electronic shutter
Public Version
www.ti.com
Camera ISP Functional Description
signal-activation length is programmable. The counter is decreased at every CNTCLK clock cycle. When
the counter reaches 0, the signal is deasserted and the global reset enable bit is disabled (
[29] GRESETEN bit). If the activation length is set to 0, the control signal is not asserted and the
control-signal enable bit is disabled. The polarity of the cam_global_reset signal can be selected
(
[30] GRESETPOL bit).
shows the use of the cam_global_reset signal set as an input or output signal.
cam_global_reset is asynchronous, edge-sensitive, and asserted for at least one interconnect clock cycle
Figure 6-77. Camera ISP Timing Control Use of cam_global_reset With Global Reset Release Camera
Modules
1191
SWPU177N – December 2009 – Revised November 2010
Camera Image Signal Processor
Copyright © 2009–2010, Texas Instruments Incorporated