MT90863 데이터 시트보기 (PDF) - Mitel Networks
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MT90863 Datasheet PDF : 35 Pages
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Advance Information
MT90863
Read Address:
Reset value:
0EH for DRR register,
0000H
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RD15 RD14 RD13 RD12 RD11 RD10 RD9 RD8 RD7 RD6 RD5 RD4 RD3 RD2 RD1 RD0
Bit
15 - 0
Name
RD15 - RD0
Description
Read Data Bits. Data transferred from one of the internal memory locations.
Table 15 -. Data Read (DRR) Register Bits
15
14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
0
0
BV/C BMC
DC
BSAB BSAB BSAB BSAB BCAB BCAB BCAB BCAB BCAB BCAB BCAB
3
2
1
0
6
5
4
3
2
1
0
Bit
Name
Description
15,14
Unused
Must be zero for normal operation.
13
BV/C
Variable /Constant Throughput Delay. This bit is used to select either
variable (low) or constant delay (high) modes on a per-channel basis for the
local interface streams.
12
BMC
Message Channel. When 1, the backplane connection memory contents are
output on the corresponding output channel and stream. Only the lower byte
(bit 7 - bit 0) will be output to the backplane interface STio pins. When 0, the
local data memory address of the switched STi input channel and stream is
loaded into the backplane connection memory.
11
DC
Directional Control. This bit enables the STio pindrivers on a per-channel
basis. When 1, the STio output driver functions normally. When 0, the STio
output driver is in a high-impedance state.
10-7
(Note 1)
BSAB3-0
Source Stream Address Bits. The binary value is the number of the data
stream for the source of the connection.
6-0
(Note 1)
BCAB6-0
Source Channel Address Bits. The binary value identifies the channel for
the connection source.
Note 1: If bit 12 (BMC) of the corresponding backplane connection memory location is 1 (device in message mode), then these
entire 8 bits (BSAB0, BCAB6 - BCAB0) are output on the output channel and stream associated with this location.
Table 16 - Blackplane Connection Memory Bits
Data Rate
BSAB3 to BSAB0 Bits Used to Determine
the Source Stream of the connection
2.048 Mb/s
STi0 to STi15
8.192 Mb/s
STi0 to STi3
2.048 Mb/s
Sub-rate Switching
STi0 to STi12
Table 17 - BSAB Bits Programming for Different Local Interface mode
21
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