AM79C976 Advanced Micro Devices, AM79C976 Datasheet - Page 253

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

REGISTER BIT CROSS REFERENCE
Table 120 shows the location and default value for each
programmable bit or field. The Offset column gives the
offset in hexadecimal of the register that contains the
bit. The codes in the Reset Type column have the fol-
lowing meanings:
8/01/00
ANTST
AP_PHY0_
ADDR
AP_PHY1_
ADDR
AP_PHY1_
DFLT
AP_PHY2_
ADDR
AP_PHY2_
DFLT
AP_PHY3_
ADDR
AP_PHY3_
DFLT
AP_PHY4_
ADDR
AP_PHY4_
DFLT
AP_PHY5_
ADDR
AP_PHY5_
DFLT
AP_PRE_
SUP1
AP_PRE_
SUP2
H
E
P
Bit Name
Hardware Reset. The bit is set to its default
value when the RST pin is asserted (low).
EEPROM Reset. The bit is set to its default
value when before the EEPROM is read or after
an EEPROM read error is detected
Power On Reset. The bit is set to its default
value when power is first applied to the device.
AUTOPOLL0
AUTOPOLL1
AUTOPOLL1
AUTOPOLL2
AUTOPOLL2
AUTOPOLL3
AUTOPOLL3
AUTOPOLL4
AUTOPOLL4
AUTOPOLL5
AUTOPOLL5
AUTOPOLL1
AUTOPOLL2
Register
TEST0
Num
4:0
4:0
4:0
4:0
4:0
4:0
Bit
8
5
5
5
5
5
6
6
Offset
(hex)
1A8
8A
8A
8C
8C
8E
8E
8A
8C
88
90
90
92
92
P R E L I M I N A R Y
Default
Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Am79C976
Reset
Type
E,H
E,H
E,H
E,H
E,H
E,H
E,H
E,H
E,H
E,H
E,H
E,H
E,H
E,H
In many cases, a particular bit can be accessed
through more than one register. For these bits, the
columns, “Alternate Reg.”, “Bit Num”, and “Alternate Bit
Name," give the alternate access paths.
Register
BCR32
Num
Alternate
Bit
15
ANTST
Bit Name
253