LG MG210, Service Manual, Page: 26 / 127

3. H/W Circuit Description
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3.4.6. GPIO Map
In total 16 allowable resources, MG210 is using 13 resources except 3 resources dedicated to SIM
and Memory. MG210 GPIO (General Purpose Input/Output) Map, describing application, I/O state, and
enable level, is shown in below table.
3.5 Analog Baseband (ABB) Processor
3.5.1. General Description
IOTA Shrink is Analog Baseband (ABB) Chip supports GSM850, GSM900, DCS1800, PCS1900,
GPRS Class 10 with Digital Basband Chip (Calypso).
IOTA Shrink 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
Table 3-5. GPIO Map Table
SPK_PHN_EN O GPIO LOW HIGH
I/O # Net Name I/O
Resource
State
Inactive
State
Active
State
I/O (0)
I/O (1) MELODY_INT I GPIO HIGH LOW
I/O (2) LCD_ID I GPIO LOW
I/O (3) DSR I GPIO HIGH LOW
I/O (4) LCD_BL_EN O GPIO LOW HIGH
I/O (5) SIM_PWCTL O SIM
LCD_RESET O GPIO HIGH LOW
I/O (7)
RCV_SPK_SEL O GPIO LOW(ABB) HIGH(MIDI)
I/O (8)
PCM_TX O
I/O (9)
PCM_RX I
I/O (10)
PCM_CLK O
I/O (11)
PCM_SYNC
I/O (12)
NOT USED
I/O (14) NBHE O MEMORY
I/O (15) NBLE O MEMORY
I/O (6)
INDLED_R
O
GPIO HIGH LOW
O
I/O (13)
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