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STLC5460 Datenblatt(Datasheet) 20 Page - STMicroelectronics

Teile-Nr. STLC5460
Beschreibung  LINE CARD INTERFACE CONTROLLER
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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 20 page
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FIRST CASE CM = 1: ACCESS TO COMMAND MEMORY
CM
CR5
CR4
CR3
CR2
CR1
CR0
R/W
1
CH1
CH0
SS1
SS0
DS1
DS0
After Reset 00 (H)
R/W
Read/Write
R/W = 0 (Write). The eight bits of Source Register and the six lower bits of this
Command Register are loaded into the Command Memory (14 bits). The Address bits
are given by the Destination Register (8 bits). Write cycle starts when Destination
Register is loaded by the microprocessor.
R/W = 1 (Read).
The 14 bits of Command memory addressed by the Destination Register are loaded
respectively into Command Register (6 bits) and Source Register (8 bits). Read cycle
starts when Destination Register is loaded by the micro-processor.
CH0/1
Channel Data Rate
CH1
CH0
Description
00
The output is at high impedance during the time slot selected
01
16kb/s subchannel is selected
10
32kb/s subchannel is selected
11
64kb/s channel is selected
During the time slot selected, the output is at high impedance for the subchannels not selected.
SS 0/1
Source Subchannel selected.
Data Rate
SS1
SS0
Source channel
16kb/s
0
0
Bits 6-7
0
1
Bits 4-5
1
0
Bits 2-3
1
1
Bits 0-1
32kb/s
0
0
Bits 4 to 5
0
1
Bits 0 to 3
Bit 7 is trasmitted first.
DS 0/1
Destination Subchannel selected.
Data Rate
SS1
SS0
Source channel
16kb/s
0
0
Bits 6-7
0
1
Bits 4-5
1
0
Bits 2-3
1
1
Bits 0-1
32kb/s
0
0
Bits 4 to 5
0
1
Bits 0 to 3
Bit 7 is trasmitted first.
STLC5460
20/54




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