STE10 datasheet(28/66 Pages) STMICROELECTRONICS

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STE10/100

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PAUSE

Disable or enable the PAUSE function for flow control. The

default value of PAUSE is determined by the result of Auto-

Negotiation. The driver software can overwrite this bit to

enable or disable it after the Auto-Negotiation has completed.

0: PAUSE function is disabled.

1: PAUSE function is enabled

Depends

on the

result of

Auto-

Negotiation

R/W

RTE

Receive Threshold Enable.

1: the receive FIFO threshold is enabled.

0: disable the receive FIFO threshold selection in DRT (bits

3~2), and the receive threshold is set to the default 64 bytes.

R/W

3~2

DRT

Drain Receive Threshold

00: 32 bytes (8 DW)

01: 64 bytes (16 DW)

10: store-and -forward

11: reserved

R/W

SINT

Software interrupt.

R/W

ATUR

1: enable automatically transmit-underrun recovery.

R/W

CSR19(offset = 8ch) - PCIC, PCI bus performance counter

31~16

CLKCNT

The number of PCI clocks from read request asserted to

access completed. This PCI clock count is accumulated for all

the read command cycles from the last CSR19 read to the

current CSR19 read.

RO*

15~8

---

reserved

7~0

DWCNT

The number of double words accessed by the last bus master.

This double word count is accumulated for all bus master data

transactions from the last CSR19 read to the current CSR19

read.

RO*

RO* = Read only and cleared by reading.

CSR20 (offset = 90h) - PMCSR, Power Management Command and Status (The same register value mapping to

CR49-PMR1.)

31~16

---

reserved

PMES

PME_Status. This bit is set whenever the STE10/100 detects

a wake-up event, regardless of the state of the PME-En bit.

Writing a “1” to this bit will clear it, causing the STE10/100 to

deassert PME# (if so enabled). Writing a “0” has no effect.

0RO

14,13

DSCAL

Data_Scale. Indicates the scaling factor to be used when

interpreting the value of the Data register. This field is

required for any function that implements the Data register.

The STE10/100 does not support Data register and

Data_Scale.

00b

12~9

DSEL

Data_Select. This four bit field is used to select which data is

to be reported through the Data register and Data_Scale field.

This field is required for any function that implements the Data

The STE10/100 does not support Data_select.

0000b

Table 6. Control/Status register description

Bit #

Name

Descriptions

Default Val

RW Type

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