參數(shù)資料
型號: PEB2245N
廠商: SIEMENS AG
英文描述: ?Multipoint Switching and Conferencing Unit - Attenuation?
中文描述: ?多點交換和會議股-衰減?
文件頁數(shù): 40/70頁
文件大?。?/td> 1021K
代理商: PEB2245N
PEB 2245
Semiconductor Group
40
4.4
Conference Mask Register (CMR)
Access in the multiplexed
μ
P-interface mode:
Access in the demultiplexed
μ
P-interface mode:
Read/Write, address: 4
H
Read/Write, address: 2
H
Reset value: 00
H
A logical 1 disables the corresponding interrupt.
IR
Initialization Request
mask; the initialization request is masked (IR = 1)
COV
Conference Overflow
mask; the conference overflow is masked (COV = 1)
4.5
Indirect Access Register (IAR)
Access in the multiplexed
μ
P-interface mode:
Access in the demultiplexed
μ
P-interface mode:
Read/Write, address: 6
H
Read/Write, address: 3
H
An indirect access is performed by reading/writing three consecutive bytes (first byte = control byte,
second byte = data byte, third byte = address byte) to/from IAR.
K2 … K0
control the indirect access according to the following table:
Bit 7
Bit 0
K2
K1
K0
0
0
DI0
D9
D8
Control Byte
D7
D6
D5
D4
D3
D2
D1
D0
Data Byte
IA7
IA6
IA5
IA4
IA3
IA2
IA1
IA0
Address Byte
K2
K1
K0
Type of Access
0
0
1
Write CM
0
0
0
Read CM
0
1
1
Write CCM: first access
0
1
0
Read CCM: first access
1
0
1
Write CCM: second access
1
0
0
Read CCM: second access
1
1
1
Write indirect register
1
1
0
Read indirect register
AD7
AD0
0
IR
COV
0
0
0
0
0
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