ort8850 Lattice Semiconductor Corp., ort8850 Datasheet - Page 24

• Manufacturer Part Number: ort8850
• Description: Field-programmable System Chip Fpsc Eight-channel X 850 Mbits/s Backplane Transceiver
• Manufacturer: Lattice Semiconductor Corp.

Lattice Semiconductor
Channel Alignment, Transparent TOH: Table 5 lists the register values to setup the ORT8850 as 4 Channel align-
ment SONET channels using transparent TOH. The order is specific. The values are given from the PowerPC point
of view. If using the MPI to write data to the ORT8850, the value given in the table is the value that should be used.
If using the UMI of the system bus, the data value would need to be byte flipped.
Table 5. Channel Alignment, Transparent TOH
Initial Register Settings
0x30004
0x30005
0x30020
0x30021
0x30022
0x30037
0x30038
0x30039
0x3003A
0x3004F
0x30050
0x30051
0x30052
0x30067
0x30068
0x30069
0x3006A
0x3007F
0x30080
0x30081
0x30082
0x30097
0x30098
0x30099
0x3009A
0x300AF
0x300B0
0x300B1
0x300B2
0x300C7
0x300C8
0x300C9
0x300CA
0x300DF
Wait for 4 SONET Frames to establish an in-frame state (~500us)
0x30018
0x30020
Register
Address
0x05
0x80
0x47
0xFF
0xFF
0x08
0x47
0xFF
0xFF
0x08
0x47
0xFF
0xFF
0x08
0x47
0xFF
0xFF
0x08
0x47
0xFF
0xFF
0x08
0x47
0xFF
0xFF
0x08
0x47
0xFF
0xFF
0x08
0x47
0xFF
0xFF
0x08
0x0C
0x07
Value
Lock register. This value must be written to allow writing to any other ORT8850 core register
Lock register. This value must be written to allow writing to any other ORT8850 core register
Turn on Channel AA in functional mode with AIS-L
Channel AA - Transparent TOH from parallel data
Channel AA - Transparent TOH from parallel data
Channel AA- Aligned by 4 (Quad A)
Turn on Channel AB function mode with AIS-L
Channel AB - Transparent TOH from parallel data
Channel AB - Transparent TOH from parallel data
Channel AB - Aligned by 4 (Quad A)
Turn on Channel AC function mode with AIS-L
Channel AC - Transparent TOH from parallel data
Channel AD - Transparent TOH from parallel data
Channel AC- Aligned by 4 (Quad A)
Turn on Channel AD function mode with AIS-L
Channel AD- Transparent TOH from parallel data
Channel AD - Transparent TOH from parallel data
Channel AC- Aligned by 4 (Quad A)
Turn on Channel BA function mode with AIS-L
Channel BA- Transparent TOH from parallel data
Channel BA- Transparent TOH from parallel data
Channel BA- Aligned by 4 (Quad B)
Turn on Channel BB function mode with AIS-L
Channel BB- Transparent TOH from parallel data
Channel BB - Transparent TOH from parallel data
Channel BB - Aligned by 4 (
Turn on Channel BC function mode with AIS-L
Channel BC - Transparent TOH from parallel data
Channel BC - Transparent TOH from parallel data
Channel BC - Aligned by 4 (
Turn on Channel BD function mode with AIS-L
Channel BD - Transparent TOH from parallel data
Channel BD - Transparent TOH from parallel data
Channel BD - Aligned by 4 (
Alignment command to resync
follows. Write 0x00 to clear register for normal operation.
Channel AA in functional mode without AIS-L
24
Quad
Quad
Quad
Quad
B)
B)
B)
Description
A and
Quad
B, then modify register settings as
ORCA ORT8850 Data Sheet