ISL35822LP datasheet(21/75 Pages) INTERSIL

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IEEE PMA/PMD REGISTERS (1.0 TO 1.15/1.000F’H)

Note (1): After this RESET bit is written, the ISL35822 will not begin counting PREAMBLE bits immediately. See Figure 17 for details.

Note (1): This bit is latched low on a detected Fault condition. It is set high on being read.

Table 5. IEEE PMA/PMD CONTROL 1 REGISTER

MDIO REGISTER ADDRESS = 1.0 (1.0000’h)

BIT(S)

NAME

SETTING

DEFAULT

R/W

DESCRIPTION

1.0.15

3.0.15

4.0.15

Reset

1 = reset

0 = reset done, normal

operation

0’b

R/W SC Writing 1 to this bit will reset the whole chip,

including the MDIO registers. (1)

1.0.14

Reserved

0’b

1.0.13

Speed Select

1 = 10Gbps

1’b

1 = bits 5:2 select speed

1.0.12

Reserved

0’b

1.0.11

LOPOWER

0 = Normal Power

0’b

R/W

No Low Power Mode, writes ignored

1.0.10:7

Reserved

0’h

1.0.6

Speed Select

1 = 10Gbps

1’b

1 = bits 5:2 select speed

1.0.5:2

Speed Select

0000 = 10Gbps

0’h

Operates at 10Gbps

1.0.1

Reserved

0’b

1.0.0

PMA Loopback

1 = Enable loopback

0 = Normal operation

0’b

R/W

Enable serial loop back mode on all four lanes,

XAUI in to XAUI out.

Table 6. IEEE PMA/PMD STATUS 1 REGISTER

MDIO REGISTER ADDRESS = 1.1 (1.0001’h)

BIT

NAME

SETTING

DEFAULT

R/W

DESCRIPTION

1.1.15:8

Reserved

00’h

1.1.7

Local Fault

1 = PMA Local Fault

0’b

Derived from Register 1.8.11:10

1.1.6:3

Reserved

0’h

1.1.2

Rx Link Up

1 = PMA Rx Link Up

0 = PMA/D Rx Link Down

1’b (1)

RO LL(1)

‘Up’ means CX4/LX4 signal level is OK, and the

PLL locked

1.1.1

LoPwrAble

Low Power Ability

0’b

Device does not support a low power mode

1.1.0

Reserved

0’b

Table 7. IEEE PMA/PMD, PCS, PHY XS, SPEED ABILITY REGISTER

MDIO REGISTER ADDRESSES = 1.4, 3.4 & 4.4 ([1,3,4].0004’h)

BIT

NAME

SETTING

DEFAULT

R/W

DESCRIPTION

1.4.15:3

3.4.15:2

4.4.15:1

Reserved for future

speeds

000’h

1.4.2:1

3.4.1

10PASS-T2/

2BASE-TL

EFM Ability

00’b

Device cannot operate @ 2BASE-TL or 10PASS-

1.4.0

3.4.0

4.4.0

10GbpsAble

10Gbps Ablility

1’b

Device Able to operate @ 10Gbps

ISL35822

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