參數(shù)資料
型號： TECO3264
廠商： Lineage Power
英文描述： 32-Channel Echo Canceller(32通道回波清除器)
中文描述： 32通道回聲消除器（32通道回波清除器）
文件頁數(shù)： 34/128頁
文件大?。?/td> 2328K
代理商： TECO3264
Data Sheet
August 1999
TECO3264 32-Channel Echo Canceller
34
Lucent Technologies Inc.
Parameters
Parameter Overview
Tables 11—18 list all of the parameters in the echo canceller chip. Some of the parameters are single bits and
some are groups of bits (these are shown with [n:m] to indicate that the index starts from m and goes to n inclu-
sively). The parameter map shows the mapping of the parameter name to its specific address (or addresses for
multibyte parameters). The echo canceller contains two memory pages, referred to as page 0 and page 1. Page 0
has a base address of 0, and page 1 has a base address of 0x100. Thus, the page 1 parameters have an absolute
address of 0x100 to 0x10E. Page 0 parameters are all configurable (read/write), while page 1 parameters are read-
only parameters, with the exceptions of the mask parameters (register 0x101 and 0x103) which are also read/write.
Per-Channel Control Parameters
Table 11 lists the parameters that control various functions on a per-channel basis. For each function, there are
32 single bit parameters corresponding to the 32 channels processed by the chip. Index 0 corresponds to time slot
0. The memory map shows all of the time slot 0 control bits located in byte 0. Thus, the first 32 bytes in the memory
map are referred to as the per-channel control words and the address corresponds to the time slot that the word
controls. See Table 19, Parameter Address Map, on page 45 for illustration.
* Single-bit 32-register parameters.
Table 11. Per-Channel Control Parameters
Symbol
*
Description
Memory Map
Starting Address (Hex)
DEC
Per-channel disable of echo canceller for time slots 0 to 31.
1 = disable EC; 0 = enable EC.
Per-channel 64 clear enable for time slots 0 to 31.
1 = enable; 0 = disable.
Per-channel enable of nonlinear processor for time slots 0 to 31.
1 = enable; 0 = disable.
Per-channel H-register reset for time slots 0 to 31.
1 = reset; 0 = no reset.
Per-channel H-register freeze for time slots 0 to 31.
1 = freeze; 0 = no freeze.
Per-channel call boundary for time slots 0 to 31.
0
→
1 transition = call boundary; otherwise, no call boundary.
0x00
EBP
0x00
ENLP
0x00
HRST
0x00
HFRZ
0x00
CALLB
0x00
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