User's Manual

iSR3500 Series 8 / 11 Pre-rev 0.3
Mobile SolutionsMobile Solutions
5 iSR35xx Module GPIO Pins and Function
Pin# Name Description GPIO
Supply
Domain
Reset
Value
GPIO guide
19 CTS_n Clear to Send GPIO13 VDDP_IO T/PU GPIO or CTR function
21 RTS_n Request to Send GPIO12 VDDP_IO T GPIO or RTS function
29 RST_OUT Reset Out GPIO32 VDDP_IO T/PD Can be used for GPIO
31 EXT_INT Ext. Interrupt GPIO33 VDDP_IO T/PD Can be used for GPIO
45 SSC0_ MRST SSC0_ MRST GPIO15 VDDP_IO T GPIO or SSCO / SPI function
47 SSC0_ CLK SSC0_ CLK GPIO14 VDDP_IO T GPIO or SSCO / SPI function
49 SSC0_ MTSR SSC0_ MTSR GPIO16 VDDP_IO T GPIO or SSCO / SPI function
51 I2C_SDA I2C Data GPIO19 VDDP_IO T/OD GPIO or I2C function
53 I2C_CLK I2C Clock GPIO18 VDDP_IO T/OD GPIO or I2C function
55 CLK_32K Clock 32K GPIO28 VDDP_IO T/PU GPIO or 32Khz clock output
57 CLK_26M Clock output GPIO30 VDDP_IO T/PD GPIO or 26Mhz clock output
2 RXD RX Data GPIO10 VDDP_ IO T Reserved for UART
4 TXD TX Data GPIO11 VDDP_IO T Reserved for UART
8 DSR Data Set Ready GPIO20 VDDP_IO T/PD GPIO or DSR function
10 NMI_n Non-maskable Int. GPIO38 VDDP_IO T/PU Reserved for NMI function
12 DTR
Data Terminal Ready
GPIO37 VDDP_IO T/PD GPIO or DTR function
14 RI / VIB_ CTRL Vibrator control GPIO36 VDDP_IO T/PD GPIO or Ring Indicator
16 KEYPAD_LED Keypad LED GPIO35 VDDP_IO T/PD GPIO or Keypad LED
34
DCD /
W_LED_DRV
Data Carrier Det.
White LED DRV
GPIO34 VDDP_IO T/PD GPIO or Data Carrier Detect
46 DISP_ REST Display Reset GPIO17 VDDP_IO T Reserved for LCD Reset
52 CS2n Chip select2 GPIO24 VDDP_MEM T/PU GPIO or Chip Select
54 CS3n Chip select3 GPIO39 VDDP_MEM T/PU GPIO or Chip Select
62 KEYIN0 Keypad Input GPIO 6 VDDP_IO T GPIO or Keypad
64 KEYIN1 Keypad Input GPIO 7 VDDP_IO T GPIO or Keypad
66 KEYIN2 Keypad Input GPIO 8 VDDP_IO T GPIO or Keypad
68 KEYIN3 Keypad In GPIO 9 VDDP_ IO T GPIO or Keypad
70 KEYOUT0 Keypad Out GPIO 0 VDDP_IO T GPIO or Keypad
72 KEYOUT1 Keypad Out GPIO 1 VDDP_IO T GPIO or Keypad
74 KEYOUT2 Keypad Out GPIO 2 VDDP_IO T GPIO or Keypad
76 KEYOUT3 Keypad Out GPIO 3 VDDP_IO T GPIO or Keypad
78 KEYOUT4 Keypad Out GPIO 4 VDDP_IO T GPIO or Keypad
80 KEYOUT5 Keypad Out GPIO 5 VDDP_IO T GPIO or Keypad
6 iSR35xx Module Test Points on the Bottom
The following test points are available at the bottom centre (refer to 9.2) for JTAG debug (labels are marked on PCB):
VIO TDI TDO TCK TRST_n TMS
For factory test purpose, the following signals are made available at the back of the module (refer to 9.2):
RTS_n CTS_n TXD RXD VRTC ON VBAT VBAT1 GND