參數(shù)資料
型號: ZR36504
廠商: Electronic Theatre Controls, Inc.
英文描述: Video & Audio Interface solution via USB
中文描述: 視頻
文件頁數(shù): 50/74頁
文件大?。?/td> 298K
代理商: ZR36504
ZORAN Corporation
USBvision II Data Decoder
ZR36505 Data Sheet
November-99
Page 50 of 50
Soft 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 can access the serial port pins directly, in order to enable
control of cameras that are not supported by the other automatic modes.
In the Soft mode, the value of 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
SENS_OUT bit (d2) is reflected in the SENS output pin.
SIO Mode: (MODE=1)
This is the Serial Clocked I/O automatic mode, and it 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.
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