參數(shù)資料
型號(hào): PEB2466-HV1.2
廠商: SIEMENS A G
元件分類: 編解碼器
英文描述: Four Channel Codec Filter with PCM- and m-Controller Interface SICOFI4-mC
中文描述: A/MU-LAW, PCM CODEC, PQFP64
文件頁數(shù): 50/82頁
文件大小: 3330K
代理商: PEB2466-HV1.2
PEB 2466
Programming the SICOFI
-4-
μ
C
Semiconductor Group
50
02.97
3.6
The
μ
C-SICOFI-4 signaling interface is made up of 2 input pins (SIx_0, SIx_1), two
output pins (SOx_0, SOx_1) and three bi-directional programmable pins (SBx_0, SBx_1,
SBx_2) per channel.
Additional two interrupt pins (INT12, INT34) are provided. If one of the input pins for
channel 1 or 2, or one of the bi-directional pins for channel 1 and 2 (if programmed as
inputs) changes, and being stable for the debounce time specified in Register XR4,
INT12 will go from ‘0’ to ‘1’. This interrupt is cleared if the appropriate registers (XR0,
XR1 and XR3) are read via the serial
μ
C-interface. Pin INT34 provides the same
functionality for channel 3 and 4.
For special purposes two additional output signals are provided by the PEB 2466.
CHCLK1 (see also register XR4) will provide a programmable time period of 2 to 28 ms.
CHCLK2 will provide 3 different frequencies (256 kHz, 512 kHz or 16384 kHz). Both
signals are only available if a valid signal is applied to the MCLK-pin.
The Signaling Interface
3.6.1
Operating Modes
Figure 14
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