User`s manual

M9328MX1ADS - Rev 2 User’s Manual
22 Configuration and Operation MOTOROLA
Configuration and Operation
Table 2-10 Keypad I/O Expander Interface
I/O Expander
Port
Key Read
I/O Expander
Port
Key Read
P00 Key 0 / S8 P10 Key 8 / S16
P01 Key 1 / S7 P11 Key 9 / S15
P02 Key 2 / S6 P12 Key 10 / S14
P03 Key 3 / S5 P13 Key 11 / S13
P04 Key 4 / S12 P14 Key 12 / S21
P05 Key 5 / S11 P15 Key 13 / S20
P06 Key 6 / S10 P16 Key 14 / S19
P07 Key 7 / S9 P17 Key 15 / S18
Table 2-11 I/O Expander to Peripherals (U42)
I/O Expander Port Mnemonic Signal
P00 UART1_EN UART1 enable
P01 UART2_EN* UART2 enable*
P02 IrDA_EN* IrDA enable*
P03 LCD_ON Not used (reserved)
P04 BTRF_EN Not used (reserved)
P05,P06,P07,
P12-P17
NC NO CONNECTION
P10 SD_WP Secure Data Write Protect
P11 SD_CD Secure Data Card Detect