
Si5040
Rev. 1.3 97
Reset settings = undefined
Reset settings = undefined
Register 180. TxtpChkErrCnt (MSB of a 40-bit Register)
Bit D39 D38 D37 D36 D35 D34 D33 D32
Name TxtpChkErrCnt[39:32]
Type 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
BitD7D6D5D4D3 D2 D1 D0
Name TxtpChkErr[7:0]
Type 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)
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