Zoran ZR 36506 USBV ision – Datasheet
Zoran Proprietary and Confidential
Camera Control S erial Port
10 -3
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CONTINUE
This bit is used in modes 2 and 3 only (IICC modes), and enables multiple transactions
inside a single START / STOP frame. When set to '1', it informs the serial machine to
prepare for multiple transaction mode. It will never affect the following transaction, but the
one coming after it, which will not contain a START pattern.
The following pages specify all 6 modes of operation for the camera-control serial port.
S oft Mode: ( MODE= 0)
This mode is selected when the MODE field (d7-d4) of the SER_MODE register is set to 0. In
this mode the host computer may access the serial port pins directly in order to enable control of
cameras that are not supported by the other automatic modes.
In Soft mode, the value of the CLK_OUT bit (d0) is reflected in the IICCK output pin. A write
operation to the DAT_IO bit (d1) sets the value of the IICDT pin. A read operation from the
same DAT_IO bit reads the actual voltage level at the IICDT pin. The value of the SENS_OUT
bit (d2) is reflected in the SENS output pin.
SI O Mode: ( MODE= 1)
This is the Serial Clocked I/O automatic mode, and is selected when the MODE field (d7-d4) of
the SER_MODE register is set to 1. The following waveform describe the SIO mode:
IICCK
IICDT
D7
D6
D5
D4
D3
D2
D1
D0
x
x
SENS
NOTE:
In both Read and Write sequence, data is sampled in the up-going edge of the clock IICCK.
IICCK
IICDT
SENS
Byte 1
Byte 2
Byte 4
NOTE:
In the SIO mode 1 to 4 bytes are written or read.