AC207-DS04-405-R datasheet(38/60 Pages) BOARDCOM

38 / 60 page

AC207

Preliminary Data Sheet

07/08/02

B roa dcom

Page 28 PHY Registers

Document

AC207-DS04-405-R

CABLE LENGTH REGISTER

RECEIVE ERROR COUNT

POWER MANAGEMENT REGISTER

Table 30: Cable Length Register

Bit

Name

Description

Mode

Default

20.[15:9]

Reserved

0000000

20.8

Adaptation

disable

1 = Disable adaptation

20.[7:4]

Cable length

indication

These bits are to indicate cable length from 0 to 150 meters. Each bit

represents 10 meters. For example, if the cable length is 100 meters

then bits [7:4] = 1010. These bits are only applicable to 100TX mode.

XXXX

20.[3:0]

Adaptation

low limit

Adaptation setting, when SD signal is first detected.

XXXX

Table 31: Receive Error Count

Bit

Name

Description

Mode

Default

21.[15:0]

Receive error count Count number of receiving packets with error. This register can

only be cleared by reset (software or hardware).

0000

Table 32: Power Management Register

Bit

Name

Description

Mode

Default

22.[15:14]

Reserved

22.13

PD_PLL

1=Power-down PLL circuit

22.12

PD_EQUAL

1=Power-down equalizer circuit

22.11

PD_BT_RCVR

1=Power-down 10BASE-T receiver

22.10

PD_LP

1=Power-down link pulse receiver

22.9

PD_EN_DET

1=Power-down energy detect circuit

22.8

PD_FX

1=Power-down FX circuit

22.[7:6]

Reserved

22.5

MSK_PLL

0=Force power-up PLL circuit

22.4

MSK_EQUAL

0=Force power-up equalizer circuit

22.3

MSK_BT_RCVR 0=Force power-up 10BASE-T receiver

22.2

MSK_LP

0=Force power-up link pulse receiver

22.1

MSK_EN_DET

0=Force power-up energy detect circuit

22.0

MSK_FX

0=Force power-up FX circuit

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