Si5040
Register 180. TxtpChkErrCnt (MSB of a 40-bit Register)
Bit
D39
D38
D37
D36
D35
D34
D33
D32
Name
Type
Reset settings = undefined
TxtpChkErrCnt[39:32]
R
Bit
Name
Function
7:0
TxtpChkErrCnt[39:32] Transmitter Test Pattern Checker Error Count.
When using a defined timebase, this register holds the error count from the last
completed timebase. In the continuous timebase setting, the register holds the cur-
rent running error count. Reading the least significant byte latches the upper bytes.
Note: Combined registers 176 to 180,
0000000000 = 0 (decimal)
FFFFFFFFFF = 2 40 – 1 (decimal)
Register 181. TxtpChkErr
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
Type
Reset settings = undefined
TxtpChkErr[7:0]
R
Bit
Name
Function
7:0
TxtpChkErr[7:0] Transmitter Test Pattern Checker Error.
Measured error count in 8-bit floating point notation. The content of this register is an
alternative format to the TxtpChkErrCnt.
Mantissa = bits [7:4]
Exponent = bits [3:0]
Error count = (Mantissa/16) x 16 Exponent
0000 0000 = 0 (decimal)
0101 0111 = (5/16) x 16 7 (decimal)
1111 1111 = (15/16) x 16 15 (decimal)
Rev. 1.3
97
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