DS1876 datasheet(49/69 Pages) MAXIM

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______________________________________________________________________________________ 49

SFP Controller with Dual LDD Interface

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 location

MEMORY TYPE

Nonvolatile (SEE)

8Ah

TXDFG2

TXDFLT2

TXDIO2

TXDFG1

TXDFLT1

TXDIO1

RESERVED

BIT 7

BIT 0

BIT 7

TXDFG2: See Figure 9.

0 = FETG2, an internal signal, has no effect on TXDOUT2.

1 = FETG2 is enabled and ORed with other possible signals to create TXDOUT2.

BIT 6

TXDFLT2: See Figure 9.

0 = TXF2 pin has no effect on TXDOUT2.

1 = TXF2 pin is enabled and ORed with other possible signals to create TXDOUT2.

BIT 5

TXDIO2: See Figure 9.

0 = (default) TXD2 input signal is enabled and ORed with other possible signals to create TXDOUT2.

1 = TXD2 input signal has no effect on TXDOUT2.

BIT 4

TXDFG1: See Figure 9.

0 = FETG1, an internal signal, has no effect on TXDOUT1.

1 = FETG1 is enabled and ORed with other possible signals to create TXDOUT1.

BIT 3

TXDFLT1: See Figure 9.

0 = TXF1 pin has no effect on TXDOUT1.

1 = TXF1 pin is enabled and ORed with other possible signals to create TXDOUT1.

BIT 2

TXDIO1: See Figure 9.

0 = (default) TXD1 input signal is enabled and ORed with other possible signals to create TXDOUT1.

1 = TXD1 input signal has no effect on TXDOUT1.

BITS 1:0

RESERVED

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 location

MEMORY TYPE

Nonvolatile (SEE)

8Bh

SEE

BIT 7

BIT 0

This value becomes the I2C slave address for the main memory when the ASEL bit (Table 02h, Register 88h)

is set. If A0h is programmed to this register, the auxiliary memory is disabled. For example, writing xxxx_010x

makes the main device addresses A4h and B4h.

DS1876 Datasheet(PDF) 49 Page - Maxim Integrated Products

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