AM79C976 Advanced Micro Devices, AM79C976 Datasheet - Page 222

• Manufacturer Part Number: AM79C976
• Description: PCnet-PRO 10/100 Mbps PCI Ethernet Controller
• Manufacturer: Advanced Micro Devices

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, BCR40 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
three. Bits 15-0 in this register are programmable
through the EEPROM.
Bit
15-10
9-8
7-0
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, BCR41 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
four. Bits 15-0 in this register are programmable
through the EEPROM.
Bit
15-10
9-8
222
Name
RES
D3_SCALE These bits correspond to the
DATA3
Name
RES
D4_SCALE These bits correspond to the
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.
by H_RESET and is not affected
by S_RESET or setting the STOP
bit.
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.
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
zeros and read as undefined.
DATA_SCALE field of the PMC-
SR (offset register 44 of the PCI
Reserved locations. Written as
D3_SCALE is read only. Cleared
These bits correspond to the PCI
DATA3 is read only. Cleared by
Reserved locations. Written as
Description
Description
to
the
description
P R E L I M I N A R Y
Am79C976
of
7-0
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
7-0
DATA4
Name
D5_SCALE These bits correspond to the
DATA5
configuration space, bits 14-13).
Refer
DATA_SCALE for the meaning of
this field.
by H_RESET and is not affected
by S_RESET or setting the STOP
bit
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.
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.
by H_RESET and is not affected
by S_RESET or setting the STOP
bit.
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.
H_RESET and is not affected by
D4_SCALE is read only. Cleared
These bits correspond to the PCI
DATA4 is read only. Cleared by
Description
D5_SCALE is read only. Cleared
These bits correspond to the PCI
DATA5 is read only. Cleared by
to
to
the
the
description
description
8/01/00
of
of