AM79C973KCW Advanced Micro Devices, AM79C973KCW Datasheet - Page 190
AM79C973KCW
Manufacturer Part Number
AM79C973KCW
Description
PCnet-FAST III Single-Chip 10/100 Mbps PCI Ethernet Controller with Integrated PHY
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C973KCW.pdf
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15-10 RES
9-8
7-0
BCR42: PCI DATA Register Five (DATA5) Alias
Register
Note: This register is an alias of the DATA register and
also of the DATA_SCALE field of the PCMCR register.
Since these two are read only, BCR42 provides a
means of programming them through the EEPROM.
The contents of this register are copied into the corre-
sponding fields pointed with the DATA_SEL field set to
five. Bits 15-0 in this register are programmable
through the EEPROM.
Bit
15-10 RES
9-8
190
D4_SCALE These bits correspond to the
DATA4
Name
D5_SCALE These bits correspond to the
Reserved locations. Written as
zeros and read as undefined.
DATA_SCALE field of the PMC-
SR (offset register 44 of the PCI
configuration space, bits 14-13).
Refer
DATA_SCALE for the meaning of
this field.
Read
D4_SCALE is read only. Cleared
by H_RESET and is not affected
by S_RESET or setting the STOP
bit
These bits correspond to the PCI
DATA register (offset Register 47
of the PCI configuration space,
bits 7-0). Refer to the description
of DATA register for the meaning
of this field.
Read accessible always. DATA4
is
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
Description
Reserved locations. Written as
zeros and read as undefined.
DATA_SCALE field of the PMC-
SR (offset Register 44 of the PCI
configuration space, bits 14-13).
Refer
DATA_SCALE for the meaning of
this field.
Read
D5_SCALE is read only. Cleared
by H_RESET and is not affected
read
to
to
accessible
accessible
only.
the
the
description
description
Cleared
P R E L I M I N A R Y
Am79C973/Am79C975
always.
always.
by
of
of
7-0
BCR43: PCI DATA Register Six (DATA6) Alias
Register
Note: This register is an alias of the DATA register and
also of the DATA_SCALE field of the PCMCR register.
Since these two are read only, BCR43 provides a
means of programming them through the EEPROM.
The contents of this register are copied into the corre-
sponding fields pointed with the DATA_SEL field set to
six. Bits 15-0 in this register are programmable through
the EEPROM.
Bit
15-10 RES
9-8
7-0
DATA5
Name
D6_SCALE These bits correspond to the
DATA6
Description
by S_RESET or setting the STOP
bit
These bits correspond to the PCI
DATA register (offset Register 47
of the PCI configuration space,
bits 7-0). Refer to the description
of DATA register for the meaning
of this field.
Read accessible always. DATA5
is
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
Reserved locations. Written as
zeros and read as undefined.
DATA_SCALE field of the PMC-
SR (offset Register 44 of the PCI
configuration space, bits 14-13).
Refer
DATA_SCALE for the meaning of
this field.
Read
D6_SCALE is read only. Cleared
by H_RESET and is not affected
by S_RESET or setting the STOP
bit
These bits correspond to the PCI
DATA register (offset Register 47
of the PCI configuration space,
bits 7-0). Refer to the description
of DATA register for the meaning
of this field.
Read accessible always. DATA6
is
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
read
read
to
accessible
only.
only.
the
description
Cleared
Cleared
always.
by
by
of
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