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M9328MX21ADSE User’s Manual, Rev. A
Freescale Semiconductor 3-9
30 SSI3_TXD SYCHRONOUS SERIAL INTERFACE TRANSMITTED DATA — Serial output signal
31 SSI3_RXD SYCHRONOUS SERIAL INTERFACE RECEIVED DATA — Serial input signal
32 SSI3_FS SYCHRONOUS SERIAL INTERFACE FRAME SYNC
33 SSI2_CLK
SYCHRONOUS SERIAL INTERFACE TRANSMITTER CLOCK — Bidirectional, output in
master mode and input in slave mode
34 SSI2_TXD SYCHRONOUS SERIAL INTERFACE TRANSMITTED DATA — Serial output signal
35 SSI2_RXD SYCHRONOUS SERIAL INTERFACE RECEIVED DATA — Serial input signal
36 SSI2_FS SYCHRONOUS SERIAL INTERFACE FRAME SYNC
37 SSI1_CLK
SYCHRONOUS SERIAL INTERFACE TRANSMITTER CLOCK — Bidirectional, output in
master mode and input in slave mode
38 SSI1_TXD SYCHRONOUS SERIAL INTERFACE TRANSMITTED DATA — Serial output signal
39 SSI1_RXD SYCHRONOUS SERIAL INTERFACE RECEIVED DATA — Serial input signal
40 SSI1_FS SYCHRONOUS SERIAL INTERFACE FRAME SYNC
41 SAP_CLK
SYCHRONOUS AUDIO PORT CLOCK — Serial transmit clock, bidirectional, output in
master mode, input in slave mode
42 SAP_RXD SYCHRONOUS AUDIO PORT RECEIVED DATA — Serial data input
43 SAP_FS
SYCHRONOUS AUDIO PORT FRAME SYNC — Bidirectional, output in master mode,
input in slave mode
44 SAP_TXD SYCHRONOUS AUDIO PORT TRANMITTED DATA — Serial data output
45 CSPI1_MOSI MASTER OUT / SLAVE IN — CSPI data signal (bidirectional)
46 CSPI1_MISO MASTER IN / SLAVE OUT — CSPI data signal (bidirectional)
47 CSPI1_SCLK SERIAL CLOCK — Bidirectional
48 CSPI1_SS0 SLAVE SELECT 0 — CSPI signal (bidirectional)
49 CSPI1_SS1 SLAVE SELECT 1 — CSPI signal (bidirectional)
50 CSPI1_SS2 SLAVE SELECT 2 — CSPI signal (bidirectional)
51 CSPI1_RDY READY — CSPI serial burst trigger, active low input
53 CSPI2_MOSI MASTER OUT / SLAVE IN — CSPI data signal (bidirectional)
54 CSPI2_MISO MASTER IN / SLAVE OUT — CSPI data signal (bidirectional)
55 CSPI2_SCLK SERIAL CLOCK — Bidirectional
56 CSPI2_SS0 SLAVE SELECT 0 — CSPI signal (bidirectional)
57 CSPI2_SS1 SLAVE SELECT 1 — CSPI signal (bidirectional)
58 CSPI2_SS2 SLAVE SELECT 2 — CSPI signal (bidirectional)
59, 60 P5V Swithched +5 VDC power
Table 3-2. CPU to Base Board PX2/PY2 Connector Signals (continued)
Pin(s) Signal Description