User's Manual

Smart Machine Smart Decision
SIM5320A_Hardware Design_V1.01 2011-2-29
69
B. SIM5320A GPIOs List
Table 46: SIM5320A GPIOs list
Name GPIO Index Default Function Alternate Function
PCM_DIN 0 GPIO Interrupt [LEVEL/LOW] PCM_DIN
STATUS_LED 1 Status led GPIO
PCM_SYNC 2 GPIO [IN] PCM_SYNC
PCM_CLK 3 GPIO [OUT/LOW] PCM_CLK
RF_SWITCH 4 RF Switch Enable/Disable RF subsystem
PCM_OUT 5 GPIO [OUT/LOW] PCM_OUT
KEYPAD_4 6 Keypad GPIO
KEYPAD_3 7 Keypad GPIO
KEYPAD_2 8 Keypad GPIO
KEYPAD_1 9 Keypad GPIO
KEYPAD_0 10 Keypad GPIO
KEYSENSE_N4 11 Keypad GPIO
KEYSENSE_N3 12 Keypad GPIO
KEYSENSE_N2 13 Keypad GPIO
KEYSENSE_N1 14 Keypad GPIO
KEYSENSE_N0 15 Keypad GPIO
UART1_CTS 33 CTS GPIO
UART1_RFR 34 RTS GPIO
UART1_DTR 35 DTR wake up module GPIO
UART_DCD 36 DCD GPIO
UART_RI 37 RI wake up host GPIO
GPIO40 40 Module power up status GPIO
GPIO41 41 Wake up host GPIO
GPIO42 42 GPIO GPIO
GPIO43 43 Wake up module GPIO
GPIO44 44 GPIO GPIO
C. Digital I/O Characteristics
Table 47: Digital I/O characteristics
2.6V Mode 1.8V Mode
Parameter Description
Min Typ Max Min Typ Max
Unit
VREG_AUX LDO output
0 2.6 2.9 0 1.8 1.84 V
V
IH
High-level
input voltage
1.69 2.6 2.9 1.17 1.8 2.1 V
V
IL
Low-level
input voltage
-0.3 0 0.91 -0.3 0 0.63 V
V
OH
High-level
1.17 2.6 2.6 0.81 1.8 1.8 V