參數(shù)資料
型號(hào)： 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)： 11/128頁
文件大小： 2328K
代理商： TECO3264
Data Sheet
August 1999
TECO3264 32-Channel Echo Canceller
11
Lucent Technologies Inc.
Pin Information
(continued)
Pin Descriptions
(continued)
Table 1. Pin Descriptions
(continued)
* I
u
indicates an internal pull-up.
Pin
Symbol
Type
*
Description
48
DTACK
O
Microprocessor Interface Write Acknowledge.
DTACK is active-high in
the Intelmode and active-low in the Motorola mode. For the family of Intel
8086 microprocessors, DTACK corresponds to RDY.
Microprocessor Interrupt.
INT is active-low in the Motorola mode and
active-high in the Intelmode, i.e., Intel 8086 family. In other Inteldevices,
INT may be an active-low signal depending on the device.
Microprocessor Interface Address Bus.
49
INT
O
6, 8—12,
14—17
156—159,
2—5
36
37
A[0:9]
I
D[0:7]
I/O
8-Bit Microprocessor Data Bus.
TDI
TCK
I
u
I
Boundary-Scan Test Data Input.
Boundary-Scan Test Clock Input.
TCK must have a clock input at all
times to keep the TAP controller in an idle state.
Boundary-Scan Test Input.
If not used, this pin must be held low.
Boundary-Scan Test Mode Select.
Boundary-Scan Data Output.
SCAN Mode Switch.
Leave unconnected for normal operation.
Static Test Enable for SCAN.
Leave unconnected for normal operation.
Force All Outputs to High-Impedance (Active-Low).
Test Input.
Leave unconnected for normal operation.
Chip Reset (Active-High).
Must be active for 500
μ
s.
5.0 V Supply.
For 5.0 V tolerant I/O; otherwise, connect to 3.3 V supply
(V
DD
).
2.048/4.096 Mbits/s Far Output Serial PCM Data Stream.
2.048/4.096 Mbits/s Near Output Serial PCM Data Stream.
Balanced 8.192 MHz Clock Output (Factory Use Only).
32.768 MHz Clock Output for H-Register Data.
H-Register Data Sync Pulse.
Occurs once per 16
μ
s and is one
32.768 MHz clock cycle wide.
H-Register Data Clocked Out at 32.768 Mbits/s.
256 kHz Straight Tone Output.
256 kHz Phase Reversed Tone Output.
256 kHz Voice Path Assurance Output.
(Factory Use.)
This pin must be left unconnected.
(Factory Use.)
This pin must be left unconnected.
(Factory Use.)
These pins must be left unconnected.
38
39
42
43
45
46
66
25
18
TRST
TMS
TDO
SCAN
TSTMD
HIGHZ
SLOW
RST
V
DD
5
I
u
I
u
O
I
I
I
u
I
u
I
I
148
149
71, 72
44
55
EPCM
CPCM
CCK8[P N]
CK32
HSYNC
O
O
O
O
O
53
50
51
52
127
128
HDSP
TONE
TDPR
VPA
CROE
CWE
CBWE[A:D]
O
O
O
O
O
O
O
122—124,
126
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