AR9271 View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
AR9271 Datasheet PDF : 152 Pages
| |||
Table 1-1. Signal-to-Pin Relationships and Descriptions
Symbol
USB Pins
TXRTUNE
DM
DP
Radio
BIASREF
RF2INN
RF2INP
RF2OUTN
RF2OUTP
Analog Interface
PABIAS2N
PABIAS2P
PDET
XPABIAS
External Switch Control
SWCOM0
SWCOM1
SWCOM2
SWCOM3
General
RST_L
XTALI
XTALO
GPIO
GPIO0/TMS
GPIO1/TDI
GPIO2/TCK
GPIO4/TDO
GPIO5/SPISDO
GPIO6/SPIS_L
Pin Type Description
39 IA/OA Transmitter Resistor Tune Pin. Connects to an external
resistor of 51 Ω that adjusts the USB 2.0 PHY high-speed
source impedance.
40 IA/OA USB D- Signal. Carries USB data to and from the USB 2.0 PHY
38 IA/OA USB D+ Signal. Carries USB data to and from the USB 2.0
PHY
62
IA BIASREF voltage is 310 mV; must connect a 6.19 KΩ ± 1%
resistor to ground
2
IA Differential RF inputs. Use one side for single-ended input.
3
IA
6 IA/OA Differential RF power amplifier output. Differential RF input
7
IA/OA
for antenna 1. The RF amplifier output only appears on
antenna 1. There is a diversity switch inside the AR9271 that
selects antenna 1 or antenna 0 for baseband signal processing.
There is also a Tx/Rx switch for antenna 1.
9
IA Bias voltage for internal PA
4
IA
68
IA Input for optional external power detector
67
OA Bias for optional external power amplifier
13
O Common switch control
14
O
15
O
16
O
10 IH/OD Reset for the AR9271. This pin has an active open drain pull
down that forces it low if either the core or the IO supply is
below safe operating limits.
55
I 40 MHz crystal.
54
O
28
I/O General purpose and multiplexed for JTAG test mode
29
I/O General purpose and multiplexed for JTAG data input
30
I/O General purpose and multiplexed for JTAG test clock
31
I/O General purpose and multiplexed for JTAG data output
18
I/O General purpose and multiplexed serial output data from an
SPI device
19
I/O General purpose and multiplexed serial interface enable
signal of SPI
Atheros Communications, Inc.
COMPANY CONFIDENTIAL
AR9271 Single-Chip 1x1 MAC/BB/Radio for 802.11n WLANs • 11
November 2011 • 11
|
|
Share Link: 