AM79C976 Advanced Micro Devices, AM79C976 Datasheet - Page 201
AM79C976
Manufacturer Part Number
AM79C976
Description
PCnet-PRO 10/100 Mbps PCI Ethernet Controller
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C976.pdf
(309 pages)
- Current page: 201 of 309
- Download datasheet (3Mb)
7
6
5
4
3
2
8/01/00
PSE
LNKSE
RCVME
XMTE
RES
RCVE
Read/Write accessible. FDLSE is
cleared by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
this bit is set, the LED illumination
time is extended for each new oc-
currence of the enabled function
for this LED output. A value of 0
disables the pulse stretcher.
Read/Write accessible. PSE is
set to 1 by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
is set, a value of 1 will be passed
to the LEDOUT bit in this register
when in Link Pass state.
Read/Write accessible. LNKSE is
set to 1 by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
When this bit is set, a value of 1 is
passed to the LEDOUT bit in this
register when there is receive ac-
tivity on the network that has
passed the address match func-
tion for this node. All address
matching modes are included:
physical, logical filtering, broad-
cast and promiscuous.
Read/Write accessible. RCVME
is cleared by H_RESET and is
not affected by S_RESET or set-
ting the STOP bit.
this bit is set, a value of 1 is
passed to the LEDOUT bit in this
register when there is transmit
activity on the network.
Read/Write accessible. XMTE is
cleared by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
read as zeros.
this bit is set, a value of 1 is
Pulse Stretcher Enable. When
Link Status Enable. When this bit
Receive Match Status Enable.
Transmit Status Enable. When
Reserved location. Written and
Receive Status Enable. When
P R E L I M I N A R Y
Am79C976
1
0
BCR5 controls the function(s) that the LED1 pin dis-
plays. Multiple functions can be simultaneously en-
abled on this LED pin. The LED display will indicate the
logical OR of the enabled functions. BCR5 defaults to
transmit or receive activity (XMTE = 1 and RCVE = 1)
with pulse stretcher enabled (PSE = 1) and is fully pro-
grammable.
Note: When LEDPE (BCR2, bit 12) is set to 1, pro-
gramming of the LED1 Status register is enabled.
When LEDPE is cleared to 0, programming of the
LED1 register is disabled. Writes to this register will be
ignored.
Note: Bits 15-0 in this register are programmable
through the EEPROM.
Bit
31-16 RES
15
SFBDE
COLE
Name
LEDOUT
Read/Write accessible. RCVE is
cleared by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
Read/Write accessible. RCVE is
cleared by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
Read/Write accessible. COLE is
cleared by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
passed to the LEDOUT bit in this
register when there is receive ac-
tivity on the network.
Start Frame/Byte Delimiter En-
able. When this bit is set, a value
of 1 is passed to the LEDOUT bit
in this register when the RXD[3:0]
pins are presenting the least sig-
nificant nibble of valid frame data.
this bit is set, a value of 1 is
passed to the LEDOUT bit in this
register when there is collision
activity on the network.
zeros and read as undefined.
This bit indicates the current
(non-stretched) value of the LED
output pin. A value of 1 in this bit
indicates that the OR of the en-
abled signals is true.
Collision Status Enable. When
Description
Reserved locations. Written as
201
Related parts for AM79C976
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Advanced Micro Devices [4,096-Bit (512x8) Bipolar PROM]
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Advanced Micro Devices [4,096-Bit (512x8) Bipolar PROM]
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Advanced Micro Devices [8 Megabit (512 K x 16-Bit) CMOS 3.0 Volt-only Burst Mode Flash Memory]
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
M41000001YAdvanced Micro Devices [32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 4 Mbit (512 K x 8-Bit/256 K x 16-Bit) Static RAM]
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Advanced Burst Error Processor
Manufacturer:
Advanced Micro Devices
Part Number:
Description:
Serial interface adapter (SIA)
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Universal interrupt controller
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
256 kilobit CMOS EPROM
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
2048 x 8 static RAM, 100ns
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Three-State Octal Buffers
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
AM2966PCOctal Dynamic Memory Drivers with Three-State Outputs
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Three-State Octal Buffers
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Three-State Octal Buffers
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
TTL programmable array logic, 7ns
Manufacturer:
Advanced Micro Devices
Datasheet: