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參數(shù)資料
| 型號： | M34116B1 |
| 廠商： | 意法半導體 |
| 英文描述： | PCM CONFERENCE CALL AND TONE GENERATION CIRCUIT |
| 中文描述： | 的PCM電話會議和音產(chǎn)生電路 |
| 文件頁數(shù)： | 13/23頁 |
| 文件大小： | 374K |
| 代理商： | M34116B1 |
M116 INSTRUCTION SET
INSTRUCTION 1: CHANNEL CONNECTION IN CONFERENCE MODE
Three byte areneeded:
1)The first byte containsthe conferencenumber (bits D0–D3) and the Start bit S (bitD4). When S = 1, all
registers of the conference will be cleared. S = 1 is only required in the instruction 1 set of the first
channel connectedto a new conference.
2)The second byte contains in the bits (D0–D4) the number of the channelto be connected and the In-
sert Tone Enable bit IT (D5). When bit IT = 1 all the channels belonging to that conference are en-
abled using insert tone function if it’sactive (TD = 1).
3) The third byte containsinformation about the attenuationlevel to be appliedto thatchannel and the
opcode(0111).
Instruction 1 Format
Control Signal
RD
1
1
1
Data Bus
D4
S
C4
X
CS
0
0
0
C/D
0
0
1
WR
0
0
0
D7
X
X
A1
D6
X
X
A0
D5
X
IT
X
D3
P3
C3
0
D2
P2
C2
1
D1
P1
C1
1
D0
P0
C0
1
S: ConferenceStart bit
P3–P0:Conferencenumber (1–10)
IT: InsertionTone function enable (IT = 1)
C4–C0: Channel number(0–31)
A1–A0:Channel attenuation
00 = –0dB
01 = –3dB
10 = –6dB
INSTRUCTION 2: CHANNEL CONNECTION IN TRANSPARENT MODE
Two bytes are needed:
1) The first byte containsthe numberof the channel.
2) The second byte contains informationabout the attenuationlevel to be applied to thatchannel and the
opcode(0011).
PCM data of this channel is notadded to any conference and it is transferredto the PCM output.It is not
affectedby the tone controlpins.
Instruction 2 Format
Control Signal
RD
1
1
Data Bus
D4
C4
X
CS
0
0
C/D
0
1
WR
0
0
D7
X
A1
D6
X
A0
D5
X
X
D3
C3
0
D2
C2
0
D1
C1
1
D0
C0
1
INSTRUCTION 3: CHANNEL DISCONNECTION
Two bytes are needed:
1) The first wordcontains the number of the channelto be disconnected.
2) The second word containsthe opcode (1111).
One time framemust exist betweendisconnectionand connectionof the samechannel.
Instruction 3 Format
Control Signal
RD
1
1
Data Bus
D4
C4
X
CS
0
0
C/D
0
1
WR
0
0
D7
X
X
D6
X
X
D5
X
X
D3
C3
1
D2
C2
1
D1
C1
1
D0
C0
1
M34116
13/23
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