Rainbow Electronics DS1875 - Manual (Page 69)

DS1875
Table 02h, Register 8Dh: COMP RANGING
FACTORY DEFAULT 00h
READ ACCESS PW2
WRITE ACCESS PW2
MEMORY TYPE Nonvolatile (SEE)
8Dh RESERVED BIAS
2
BIAS
1
BIAS
0
RESERVED APC
2
APC
1
APC
0
BIT 7 BIT 0
The upper nibble of this byte controls the full-scale range of the quick-trip monitoring for BIAS. The lower nibble
of this byte controls the full-scale range for the quick-trip monitoring of the APC reference as well as the closed-
loop monitoring of APC.
BIT 7 RESERVED (Default = 0)
BITS 6:4
BIAS[2:0] BIAS Full-Scale Ranging. 3-bit value to select the FS comparison voltage for BIAS found
on MON1. Default is 000b and creates a FS of 1.25V.
BIAS[2:0] % OF 1.25V FS VOLTAGE (V)
000b 100.00 1.250
001b 80.04 1.001
010b 66.73 0.834
011b 50.10 0.626
100b 40.11 0.501
101b 33.45 0.418
110b 28.69 0.359
111b 25.12 0.314
BIT 3 RESERVED (Default = 0)
BITS 2:0
APC[2:0] APC Full-Scale Ranging. 3-bit value to select the FS comparison voltage for BMD with
the APC. Default is 000b and creates a FS of 2.5V.
APC[2:0] % OF 2.50V FS VOLTAGE (V)
000b 100.00 1.250
001b 80.04 1.001
010b 66.73 0.834
011b 50.10 0.626
100b 40.11 0.501
101b 33.45 0.418
110b 28.69 0.359
111b 25.12 0.314
PON Triplexer and SFP Controller
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