參數(shù)資料
型號(hào)： ML53612
廠商： OKI SEMICONDUCTOR CO., LTD.
英文描述： 64-Channel Full Duplex H.100/H.110 CT Bus System Interface and Time-Slot Interchange
中文描述： 64通道全雙工H.100/H.110 CT總線系統(tǒng)接口和時(shí)隙交換
文件頁(yè)數(shù)： 11/68頁(yè)
文件大?。?/td> 696K
代理商： ML53612
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ML53612
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Oki Semiconductor
4.0 FUNCTIONAL DESCRIPTION
The ML53612 has the following interfaces:
4.1 Local Bus
The local bus consists of up to two serial input ports and two serial output ports, totalling 128 possible
local bus connections to the CT Bus. The input and output ports can be configured independently as two
2 Mbps streams, one 4 Mbps stream, or one-half of an 8 Mbps stream. The chip includes two indepen-
dent, configurable local clock and frame synchronization signals. The local clocks have configurable
polarity and frequency that can be set to 2 MHz, 4 MHz, 8 MHz, or 16 MHz regardless of local stream
data rate. The local frame syncs also have a configurable polarity and can be set to use one of three fram-
ing formats (early, straddle, or late).
To transfer data to and from the local bus, the ML53612 allows the user to select a minimum delay or con-
stant delay buffer mode on a per channel basis. In the minimum delay mode, the input-output buffer
transfer occurs on the next 2 Mbps time-slot boundary, reducing any potential channel delay for classic
voice processing applications. In the constant delay mode, the buffer transfer occurs at the frame bound-
ary for bundling and proper switching of wide-band data, for data sent on the ISDN H channel.
Microprocessor Interface
Local Serial Data In
Local Serial Data Out
Local Timing
Analog PLL Reference Clock
CT Bus Timing
CT Bus Serial Data
Figure 2. Block Diagram
8 Channel
Stream Switch
64 x 4096
Transmit Switch
Master
Digital PLL
4160 x 64
Receive Switch
Slave Digital
PLL
Configuration &
Routing Register
Analog
PLL
Local
Connect
CT Bus Serial Data
CT Bus Timing
131.072 MHz
Internal Timing
Internal Control
Microprocessor
Interface
APLL
Reference Clock
Local Timing
Local Serial
Data Out
Local Serial
Data In
64-Channel
Receive Conversion
64-Channel
Transmit Conversion
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