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參數(shù)資料
| 型號(hào)： | PSB3186 |
| 英文描述： | The IRAC1150-D2 Control Board is designed to demonstrate the performance of the IR1150S control IC in a continuous conduction mode boost converter for PFC.; A IRAC1150-D2 with Standard Packaging |
| 中文描述： | 3.3伏ISDN用戶終端訪問控制器eXtended擴(kuò)展 |
| 文件頁數(shù)： | 94/200頁 |
| 文件大?。?/td> | 2959K |
| 代理商： | PSB3186 |
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ISAC-SX TE
PSB 3186
Description of Functional Blocks
Data Sheet
94
2003-01-30
being generated anytime a change occurs (ISTA.CIC). A new code must be found in two
consecutive IOM-2 frames to be considered valid and to trigger a C/I code change
interrupt status (double last look criterion).
In the transmit direction, the code written in CIX0 is continuously transmitted in C/I0.
2) A second C/I channel (called C/I1) can be used to convey real time status information
between the ISAC-SX TE and various non-layer-1 peripheral devices e.g. PSB 2161
ARCOFI-BA. The C/I1 channel consists of four or six bits in each direction.The width can
be changed from 4bit to 6bit by setting bit CIX1.CICW.
In 4-bit mode 6-bits are written whereby the higher 2 bits must be set to “1” and 6-bits
are read whereby only the 4 LSBs are used for comparison and interrupt generation (i.e.
the higher two bits are ignored).
The C/I1 channel is accessed via registers CIR1 and CIX1. A change in the received
C/I1 code is indicated by an interrupt status without double last look criterion.
CIC Interrupt Logic
Figure 53
shows the CIC interrupt structure.
A CIC interrupt may originate
– from a change in received C/I channel 0 code (CIC0)
or
– from a change in received C/I channel 1 code (CIC 1).
The two corresponding status bits CIC0 and CIC1 are read in CIR0 register. CIC1 can
be individually disabled by clearing the enable bit CI1E in the CIX1 register. In this case
the occurrence of a code change in CIR1 will not be displayed by CIC1 until the
corresponding enable bit has been set to one.
Bits CIC0 and CIC1 are cleared by a read of CIR0.
An interrupt status is indicated every time a valid new code is loaded in CIR0 or CIR1.
The CIR0 is buffered with a FIFO size of two. If a second code change occurs in the
received C/I channel 0 before the first one has been read, immediately after reading of
CIR0 a new interrupt will be generated and the new code will be stored in CIR0. If several
consecutive codes are detected, only the first and the last code is obtained at the first
and second register read, respectively.
For CIR1 no FIFO is available. The actual code of the received C/I channel 1 is always
stored in CIR1.
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