Kontron COMe-cP2020 - Manual (Page 51)

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COMe-P2020 User Guide
51
Table 3-20: 0x010: Serdes Multiplexer Control Register
ACTION D7 D6 D5 D4 D3 D2 D1 D0
READ NU NU NU NU NU Sel2 Sel1 Sel1
WRITE NU NU NU NU NU Sel2 Sel1 Sel1
POWER UP 1 1 1 1 1 1 1 1
BITFIELD DESCRIPTION
[D2-D0] Sel0 Serdes#1 Multiplexer selection :
'0' = CPU Serdes Lane#1 is connected to Carrier Serdes Lane#1
'1' = CPU Serdes Lane#1 is connected to Carrier Serdes Lane#4
Sel1 Serdes#2 Multiplexer selection :
'0' = CPU Serdes Lane#2 is connected to Carrier Serdes Lane#2
'1' = CPU Serdes Lane#2 is connected to Carrier Serdes Lane#10
Sel2 Serdes#3 Multiplexer selection :
'0' = CPU Serdes Lane#3 is connected to Carrier Serdes Lane#3
'1' = CPU Serdes Lane#3 is connected to Carrier Serdes Lane#11
Table 3-21: 0x011: User Checksum Register
ACTION D7 D6 D5 D4 D3 D2 D1 D0
READ Compare_Byte[7:0]
WRITE Compare_Byte[7:0]
POWER UP 1 1 1 1 1 1 1 1
BITFIELD DESCRIPTION
[D7-D0] Compare_Byte[7:0] Checksum Control Byte:
User Configuration is only valid if sum of all 16 CPU Conf iguration Registers
(0x000 - 0x010) + value of User Checksum Register =0x011) is equal 00h.
If the addition of all 17 registers is not equal 00h CPLD forces automatically Default
Conf iguration strappings to CPU.
Table 3-22: 0x012: UFM Erase Control Register
ACTION D7 D6 D5 D4 D3 D2 D1 D0
READ 0 0 0 0 0 0 0 0
WRITE NU NU NU NU NU NU NU RstUfm
POWER UP 0 0 0 0 0 0 0 0
BITFIELD DESCRIPTION
[D0] RstUfm Reset UFM Memory (set all memory cells to 0xFF):
'0' = no Reset
'1' = Reset UFM (bit is set by register access and automatically reset by CPLD)