peb20550 Infineon Technologies Corporation, peb20550 Datasheet - Page 73
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peb20550
Manufacturer Part Number
peb20550
Description
Extended Pcm Interface Controller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB20550.pdf
(269 pages)
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4.2.5.3 Monitor/Feature Control Channel FIFO (MFFIFO)
Access in demultiplexed P-interface mode:
Access in multiplexed P-interface mode:
Reset value: empty
The 16-byte bi-directional MFFIFO provides intermediate storage for data bytes to be
transmitted or received over the monitor or feature control channel.
MFD7..0
Note: The byte n + 1 of an n-byte transmit message in monitor channel is not defined.
4.2.6
4.2.6.1 Signaling FIFO (CIFIFO)
Access in demultiplexed P-interface mode:
Access in multiplexed P-interface mode:
Reset value: 0xxxxxxx
The 9 byte deep CIFIFO stores the addresses of CFI time slots in which a C/I and/or a
SIG value change has taken place. This address information can then be used to read
the actual C/I or SIG value from the control memory.
SBV
SAD6..0
Semiconductor Group
bit 7
bit 7
MFD7
SBV
Status/Control Registers
MF Data bits 7..0; MFD7 (MSB) is the first bit to be sent over the serial CFI,
MFD0 (LSB) the last.
Signaling Byte Valid.
0… the SAD6..0 bits are invalid.
1… the SAD6..0 bits indicate a valid subscriber address. The polarity of SBV
Subscriber Address bits 6..0; The CM address which corresponds to the CFI
time slot where a C/I or SIG value change has taken place is encoded in
these bits. For C/I channels SAD6..0 point to an even CM-address (C/I
value), for SIG channels SAD6..0 point to an odd CM-address (stable SIG
value).
MFD6
SAD6
is chosen such that the whole 8 bits of the CIFIFO can be copied to the
MAAR register in order to read the upstream C/I or SIG value from the
control memory.
B
MFD5
SAD5
MFD4
SAD4
73
MFD3
SAD3
read/write
read/write
read
read
Detailed Register Description
MFD2
SAD2
address: B
OMDR:RBS = 0
address: 16
address: C
OMDR:RBS = 0
address: 18
MFD1
SAD1
PEB 2055
PEF 2055
H
H
bit 0
bit 0
H
H
MFD0
SAD0
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