MT90863 Mitel Networks Corporation, MT90863 Datasheet - Page 21

• Manufacturer Part Number: MT90863
• Description: 3V Rate Conversion Digital Switch
• Manufacturer: Mitel Networks Corporation

Advance Information
15 - 0
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.
(Note 1)
(Note 1)
15,14
Bit
10-7
6-0
Bit
13
12
11
15
RD15
0
Read Address:
Reset value:
15
Sub-rate Switching
2.048 Mb/s
8.192 Mb/s
2.048 Mb/s
Data Rate
RD14
14
RD15 - RD0
0
14
Table 17 - BSAB Bits Programming for Different Local Interface mode
BSAB3-0
BCAB6-0
BV/C
Name
Unused
RD13
13
Name
BV/C
13
BMC
DC
BMC
12
RD12
12
Table 16 - Blackplane Connection Memory Bits
DC
11
RD11
Table 15 -. Data Read (DRR) Register Bits
11
Read Data Bits. Data transferred from one of the internal memory locations.
0E
0000
Must be zero for normal operation.
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.
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.
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.
Source Stream Address Bits. The binary value is the number of the data
stream for the source of the connection.
Source Channel Address Bits. The binary value identifies the channel for
the connection source.
H
BSAB
for DRR register,
10
RD10
H
3
10
BSAB
9
2
RD9
9
BSAB
BSAB3 to BSAB0 Bits Used to Determine
8
RD8
1
8
the Source Stream of the connection
BSAB
7
RD7
0
7
BCAB
6
RD6
6
6
Description
Description
STi0 to STi15
STi0 to STi12
STi0 to STi3
BCAB
5
RD5
5
5
BCAB
4
RD4
4
4
BCAB
3
RD3
3
3
BCAB
2
RD2
2
2
BCAB
MT90863
1
RD1
1
1
BCAB
0
RD0
0
0
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