Analog Baseband(Abb) Processor - LG MG200 Service Manual

3. H/W CIRCUIT DESCRIPTION
3.4.6 GPIO MAP
In total 16 allowable resources, MG200 is using 13 resources except 3 resources dedicated to SIM
and Memory. MG200 GPIO (General Purpose Input/Output) Map, describing application, I/O state,
and enable level, is shown in below table.
I/O #
I/0 (0)
I/0 (1) MOLODY_INT
I/0 (2)
I/0 (3)
I/0 (4) LCD_BACKLIGHT
I/0 (5) SIM_PWRCTRL
I/0 (6)
I/0 (7)
I/0 (8)
I/0 (9)
I/0 (10)
I/0 (11)
I/0 (12)
I/0 (13)
I/0 (14)
I/0 (15)
3.5 Analog Baseband (ABB) Processor
3.5.1 General Description
IOTA is Analog Baseband (ABB) Chip supports GSM900, DCS1800, PCS1900, GPRS Class 10
with Digital Basband Chip (Calypso).
IOTA processes GSM modulation/demodulation and power management operations.
Block Description
• Audio Signal Processing & Interface
• Baseband in-phase(I), quadrature(Q) Signal Processing
• RF interface with DBB (time serial port)
• Supply voltage regulation
• Battery charging control
• Switch ON/OFF
• 1.8V/3V SIM card Interface
• 4 internal & 4external ADC channels
Application I/O
FOLDER I
I
SPK_EN I
DSR I
I
O
BCLKX I
LCD_RESET O
IF_MODE O
PCM_TX O
INDLED_R O
INDLED_G O
LCD_ID O
HANDSFREE I
NBHE O
NBLE O
- 24 -
Resouce Inactive
State State
GPIO HIGH (OPEN)
GPIO HIGH
GPIO LOW (SPK)
GPIO HIGH
GPIO LOW
SIM HIGH
GPIO LOW
GPIO HIGH
GPIO LOW
GPIO LOW
GPIO LOW
GPIO LOW
GPIO
GPIO HIGH
MEMORY
MEMORY
Active
State
LOW (Colsed)
LOW
HIGH (SPK)
LOW
HIGH
HIGH
HIGH
LOW
HIGH
HIGH
HIGH
HIGH
RESERVED
LOW