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Download i.MX31ADS Application Development System User`s Manual
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ADS Connectors and Signals Table 4-7. Extension Connector J17 Signal Description (continued) Pin Signal Description B10 KPCOL2 KEYPAD COLUMN 2 — Bidirectional signal used to scan a keypad B11 KPCOL1 KEYPAD COLUMN 1 — Bidirectional signal used to scan a keypad B12 KPCOL0 KEYPAD COLUMN 0 — Bidirectional signal used to scan a keypad B13 SRXD4 SYCHRONOUS AUDIO PORT RECEIVED DATA — serial data input SYCHRONOUS AUDIO PORT FRAME SYNC — Bidirectional, output in master mode, input in slave mode B14 SFS4 B15 KPCOL7 B16 KPCOL6 C1 GND C2 R_CSPI1_MOSI MASTER OUT / SLAVE IN — CSPI data signal (bidirectional) C3 R_CSPI1_MISO MASTER IN / SLAVE OUT — CSPI data signal (bidirectional) C4 R_CSPI1_SCLK C5 R_CSPI1_SS0 SLAVE SELECT 0 — CSPI signal (bidirectional) C6 R_CSPI1_SS1 SLAVE SELECT 1 — CSPI signal (bidirectional) C7 R_CSPI1_SS2 SLAVE SELECT 2 — CSPI signal (bidirectional) C8 R_CSPI1_RDY KEYPAD COLUMN 7 — Bidirectional signal used to scan a keypad KEYPAD COLUMN 6 — Bidirectional signal used to scan a keypad GROUND SERIAL CLOCK — Bidirectional READY — CSPI serial burst trigger, active low input SYCHRONOUS SERIAL INTERFACE TRANSMITTER CLOCK — Bidirectional, output in master mode and input in slave mode C9 R_SCK3 C10 R_STXD3 C11 R_SRXD3 C12 R_SFS3 C13 SCK4 C14 R_STXD4 C15 NC NOT CONNETED C16 3V3 + 3 VDC power SYCHRONOUS SERIAL INTERFACE TRANSMITTED DATA — Serial output signal SYCHRONOUS SERIAL INTERFACE RECEIVED DATA — Serial input signal SYCHRONOUS SERIAL INTERFACE FRAME SYNC SYCHRONOUS AUDIO PORT CLOCK — Serial transmit clock, bidirectional, output in master mode, input in slave mode SYCHRONOUS AUDIO PORT TRANMITTED DATA — Serial data output M9328MX31ADS User’s Manual, Rev 1 (Preliminary) Freescale Semiconductor 4-23
