Datasheet

47Maxim Integrated
SFP Controller for Dual Rx Interface
DS1877
Table 02h, Register 8Ah: CNFGC
Table 02h, Register 8Bh: DEVICE ADDRESS
FACTORY DEFAULT 00h
READ ACCESS PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
WRITE ACCESS PW2 or (PW1 and RWTBL2)
A2h AND B2h MEMORY Common A2h and B2h memory locations
MEMORY TYPE Nonvolatile (SEE)
8Ah RESERVED
TXD_RST
EN DAC2
LOSC2 INVLOS2 RESERVED
TXD_RST
EN DAC1
LOSC1 INVLOS1
BIT 7 BIT 0
BITS 7, 3 RESERVED
BIT 6
TXD_RST EN DAC2:
0 = TXDC2 has no effect on DAC2.
1 = DAC2 is reset by TXDC2.
BIT 5
LOSC2: See Figure 11.
0 = LOS2 LO QT drives LOSOUT logic.
1 = LOS2 input pin drives LOSOUT logic.
BIT 4
INVLOS2: See Figure 11.
0 = (default) LOS2 input is not inverted.
1 = LOS2 input is inverted.
BIT 2
TXD_RST EN DAC1: See Figure 11.
0 = TXDC1 has no effect on DAC1.
1 = DAC1 is reset by TXDC1.
BIT 1
LOSC1: See Figure 11.
0 = LOS1 LO QT drives LOSOUT logic.
1 = LOS1 input pin drives LOSOUT logic.
BIT 0
INVLOS1: See Figure 11.
0 = (default) LOS1 input is not inverted.
1 = LOS1 input is inverted.
FACTORY DEFAULT 00h
READ ACCESS PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
WRITE ACCESS PW2 or (PW1 and RWTBL2)
A2h AND B2h MEMORY Common A2h and B2h memory locations
MEMORY TYPE Nonvolatile (SEE)
8Bh RESERVED RESERVED RESERVED RESERVED 2
3
2
2
2
1
RESERVED
BIT 7 BIT 0
This value becomes the I
2
C slave address for the main memory when the ASEL bit (Table 02h, Register 88h) is
set. If A0h/B0h is programmed to this register, the auxiliary memory is disabled. For example, writing xxxx_010x
makes the main device addresses A4h and B4h.