Technical Specs

4114016 Rev 3.0 January 28, 2014 13
Product Technical Specification
Introduction
1.6. Architecture
The figure below presents an overview of the AirPrime HL6528x module internal architecture and
external interfaces.
Note: Dotted parts are only supported on the AirPrime HL6528-G and HL6528-G2.8V.
HL6528x
Memory
(Flash + RAM)
GNSS
SAW
Filters
GSM
PA
&
Switch
CTRL
DATA
16.369MHz
26MHz 32.768KHz
UART1 (8pins)
SPI
VBAT
GND
VGPIO
VBAT_RTC
GPIO x8
ADC x2
I²C
MIC
SPEAKER
PCM
RF
RF
JTAG
LGA-
146
Baseband
EXT_LNA_GPS_EN
PPS
SAW
Filter
RF
LNA
SIM2
SIM1
MCU DSP
PMU RF
Analog Baseband
Peripherals
RX_HB
RX
_
LB
LB
LB
HB
HB
TX_LB
TX_HB
LGA-
146
2
G _
TX
_
ON
Figure 1. AirPrime HL6528x Architecture Overview
1.7. Interfaces
The AirPrime HL6528 and HL6528-2.8V modules provide the following interfaces and peripheral
connectivity:
 1 8-pin UART
 Active Low RESET
 Active Low POWER-ON
 1 1.8V/3V UIM
 1 UIM 3V
 1 Analog Audio Interface (Differential input/output)
 1 Digital Audio
 2 ADC
 1 JTAG Interface
 8 GPIOs with I²C multiplexes
 2G TX Burst Indicator
 GSM Antenna
Note: SPI interface is ONLY dedicated to SW traces debug.