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M9328MX21ADSE User’s Manual, Rev. A
3-30 Freescale Semiconductor
Table 3-18. Extension Connector PE2 Signal Description
Pin(s) Signal Description
A1 SD1_CLK SD/MMC CLOCK — Clock output to SD/MMC card
A2 SD1_CMD SD/MMC COMMAND — Serial command bit to SD/MMC card, bidirectional
A3 SD1_D3 SD/MMC DATA BIT 3 — Serial data bit to SD/MMC card, bidirectional
A4 SD1_D2 SD/MMC DATA BIT 2 — Serial data bit to SD/MMC card, bidirectional
A5 SD1_D1 SD/MMC DATA BIT 1 — Serial data bit to SD/MMC card, bidirectional
A6 SD1_D0 SD/MMC DATA BIT 0 — Serial data bit to SD/MMC card, bidirectional
A7 UART1_RTS UART1 REQUEST TO SEND — Active low input signal
A8 UART1_CTS UART1 CLEAR TO SEND — Active low output signal
A9 UART1_RXD UART1 RECEIVED DATA — Serial input signal
A10 UART1_TXD UART1 TRANSMITTED DATA — Serial output signal
A11 UART3_RTS UART3 REQUEST TO SEND — Active low input signal
A12 UART3_CTS UART3 CLEAR TO SEND — Active low output signal
A13 UART3_RXD UART3 RECEIVED DATA — Serial input signal
A14 UART3_TXD UART3 TRANSMITTED DATA — Serial output signal
A15 UART2_RTS UART2 REQUEST TO SEND — Active low input signal
A16 UART2_CTS UART2 CLEAR TO SEND — Active low output signal
B1 KP_ROW5 KEYPAD ROW 5 — Bidirectional signal used to scan a keypad
B2 KP_ROW4 KEYPAD ROW 4 — Bidirectional signal used to scan a keypad
B3 KP_ROW3 KEYPAD ROW 3 — Bidirectional signal used to scan a keypad
B4 KP_ROW2 KEYPAD ROW 2 — Bidirectional signal used to scan a keypad
B5 KP_ROW1 KEYPAD ROW 1 — Bidirectional signal used to scan a keypad
B6 KP_ROW0 KEYPAD ROW 0 — Bidirectional signal used to scan a keypad
B7 KP_COL5 KEYPAD COLUMN 5 — Bidirectional signal used to scan a keypad
B8 KP_COL4 KEYPAD COLUMN 4 — Bidirectional signal used to scan a keypad
B9 KP_COL3 KEYPAD COLUMN 3 — Bidirectional signal used to scan a keypad
B10 KP_COL2 KEYPAD COLUMN 2 — Bidirectional signal used to scan a keypad
B11 KP_COL1 KEYPAD COLUMN 1 — Bidirectional signal used to scan a keypad
B12 KP_COL0 KEYPAD COLUMN 0 — Bidirectional signal used to scan a keypad
B13 SAP_RXD SYCHRONOUS AUDIO PORT RECEIVED DATA — serial data input
B14 SAP_FS
SYCHRONOUS AUDIO PORT FRAME SYNC — Bidirectional, output in master mode,
input in slave mode