am79c930 Advanced Micro Devices, am79c930 Datasheet - Page 118
![no-image](/images/manufacturer_photos/0/0/14/advanced_micro_devices_sml.jpg)
am79c930
Manufacturer Part Number
am79c930
Description
Pcnet-mobile Single-chip Wireless Lan Media Access Controller
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C930.pdf
(161 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
am79c930VC
Manufacturer:
AMD
Quantity:
3 428
Part Number:
am79c930VC
Manufacturer:
AMD
Quantity:
20 000
- Current page: 118 of 161
- Download datasheet (628Kb)
CONFIGURATION REGISTER INDEX:
Bit
7:6
5:0
TCR25: RSSI Configuration
This register is the RSSI Configuration register.
This
converter parameters.
CONFIGURATION REGISTER INDEX:
Bit
7
6
5
4
118
AMD
register
UXA2DST
Reserved
Reserved
ENSAR
ENEXT
SS[5:0]
Name
Name
is
used
to
Reset Value
Reset Value
setup
00h
–
0
0
0
–
some
P R E L I M I N A R Y
18h
Description
Reserved. Must be written as a 0. Reads of this bit produce
undefined data.
RSSI Sample Start. The value in this register is used to determine
when to capture a sample of the RSSI input for A/D conversion dur-
ing antenna diversity operation. The register value is a measure of
the time of RSSI sample relative to the end of the current antenna
dwell time (i.e., SS=03h implies that the RSSI sample will be con-
verted at 3 s before the current antenna dwell time ends).
The resolution of the RSSI sample timer is equal to 20 times the
CLKIN period when the CLKGT20 bit of MIR9 is set to 0 and is equal
to 40 times the CLKIN period when the CLKGT20 bit of MIR9 is set
to 1. For a 1 Mbs data rate with CLKIN = 20 MHz and CLKGT20 = 0,
the resolution is 1 . With CLKIN=20 MHz and CLKGT20 = 0, a
value of SS[5:0] = 00100 means that the RSSI sample will be taken
4 before the next antenna switch event occurs. A register value of
0 means that no RSSI samples will be taken.
The time value represented by the bits in SS[5:0] must be less than
the time value of the bits in the ADT[5:0] field of TCR4 minus the
time value of the bits of the A2DT[3:0] field of TCR25 minus 9
CLKIN periods (18 CLKIN periods if CLKGT20=1).
19h
Description
Use external A/D conversion Start signal. When UXA2DST is set to
0, then the A/D conversion process starts when the Antenna Dwell
timer reaches the value programmed in the SS bits of TCR24.
When UXA2DST is set to 1, then an external stimulus from the
USER6/IRQ5/EXTA2DST pin is required to begin each A/D conver-
sion cycle. Rising edges of USER6/IRQ5/EXTA2DST initiate new
conversion cycles. A/D sample and conversion timing will proceed
as programmed in the TCR25 register A2DT field.
Enable External. Setting ENEXT to a 1 enables the external A/D
mode of the Am79C930 device, allowing the Am79C930 device to
use the digital values supplied by an external A/D converter in CCA
and antenna diversity decisions. ENEXT is used in conjunction with
ENSAR (TCR25[5]) and ADDA (TIR26[2]) to configure the
Am79C930 device A/D mode according to the table listed in section
RSSI A/D Unit .
Enable SAR. Setting ENSAR to a 1 enables the SAR[6:0] pins to
drive as outputs. ENSAR is used in conjunction with ENINT
(TCR25[6]) and ADDA (TIR26[2]) to configure the Am79C930 de-
vice A/D mode according to the table listed in the RSSI A/D unit de-
scription of in section RSSI A/D Unit .
Reserved. Must be written as a 0. Reads of this bit produce
undefined data.
A/D
Am79C930
Related parts for am79c930
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![AM27S29DC](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
Advanced Micro Devices [4,096-Bit (512x8) Bipolar PROM]
Manufacturer:
Advanced Micro Devices
Datasheet:
![AM27S29APC](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
Advanced Micro Devices [4,096-Bit (512x8) Bipolar PROM]
Manufacturer:
Advanced Micro Devices
Datasheet:
![AM29BL802CB-70RZE](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
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:
![M41000001Y](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
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:
![AM95C94JC](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
Advanced Burst Error Processor
Manufacturer:
Advanced Micro Devices
![AM7992BPC](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
Serial interface adapter (SIA)
Manufacturer:
Advanced Micro Devices
Datasheet:
![AM9519ADC](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
Universal interrupt controller
Manufacturer:
Advanced Micro Devices
Datasheet:
![AM27C256-150DC](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
256 kilobit CMOS EPROM
Manufacturer:
Advanced Micro Devices
Datasheet:
![AM9128-10PC](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
2048 x 8 static RAM, 100ns
Manufacturer:
Advanced Micro Devices
Datasheet:
![P8284A](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
Manufacturer:
Advanced Micro Devices
Datasheet:
![DM81LS98N](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
Three-State Octal Buffers
Manufacturer:
Advanced Micro Devices
Datasheet:
![AM2966PC](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
AM2966PCOctal Dynamic Memory Drivers with Three-State Outputs
Manufacturer:
Advanced Micro Devices
Datasheet:
![DM81LS97N](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
Three-State Octal Buffers
Manufacturer:
Advanced Micro Devices
Datasheet:
![DM81LS96N](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
Three-State Octal Buffers
Manufacturer:
Advanced Micro Devices
Datasheet:
![PAL16L8-7PC](/images/manufacturer_photos/0/0/14/advanced_micro_devices_tmb.jpg)
Part Number:
Description:
TTL programmable array logic, 7ns
Manufacturer:
Advanced Micro Devices
Datasheet: