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| Support Information | |
| Table | ||
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Pin(s) | Signal | Description | |
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1, 45 | VCC | +3.0 VDC power | |
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2 | CS0_B | CHIP SELECT 0 — Chip select signal, active low output | |
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3 | PWMO PC_SPKOUT | PCMCIA SPEAKER OUT — Digital audio output to drive a speaker* | |
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4 | TP13 | Test point | |
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5 | RESET_IN_B | RESET IN — Active low reset signal to the processor | |
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6, 9 | P2.5V | +2.5 VDC power | |
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7 | RESET_OUT_B | RESET OUT — Active low reset signal from the processor | |
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8 | NEXUSEVTI_GPIO | NEXUS EVENT IN — can be general purpose I/O | |
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10 | SDCKE1 | SDRAM CLOCK ENABLE 1 — Active high outputs to SDRAM | |
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11 | RW_B PC_WE | PCMCIA — Output signal used to latch memory write data* | |
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12 | BCLK | BURST CLOCK — Output signal to external burst devices; synchronizes burst loading | |
and incrementing | |||
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13 | CS5_B | CHIP SELECT 5 — Chip select signal, active low output | |
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14 | CLKO | CLOCK OUT — Clock out from the processor, NC if R44 not installed | |
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15 | CS3_B | CHIP SELECT 3 — Chip select signal, active low output | |
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16 | CS4_B | CHIP SELECT 4 — Chip select signal, active low output | |
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17, 51 | P1.8v | +1.8 VDC power | |
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18 | CS1_B | CHIP SELECT 1 — Chip select signal, active low output | |
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19 | A0 | ADDRESS BIT 0 — Output line for addressing external devices. | |
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20 | A1 | ADDRESS BIT 1 — Output line for addressing external devices. | |
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21 | D7 | DATA BIT 7 — Bidirectional data bit from the processor | |
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22 | D8 | DATA BIT 8 — Bidirectional data bit from the processor | |
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23 | D6 | DATA BIT 6 — Bidirectional data bit from the processor | |
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24 | D9 | DATA BIT 9 — Bidirectional data bit from the processor | |
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25 | D5 | DATA BIT 5 — Bidirectional data bit from the processor | |
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26 | D10 | DATA BIT 10 — Bidirectional data bit from the processor | |
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27 | D4 | DATA BIT 4 — Bidirectional data bit from the processor | |
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28 | D11 | DATA BIT 11 — Bidirectional data bit from the processor | |
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29 | D3 | DATA BIT 3 — Bidirectional data bit from the processor | |
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30 | D12 | DATA BIT 12 — Bidirectional data bit from the processor | |
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31 | D2 | DATA BIT 2 — Bidirectional data bit from the processor | |
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| M9328MX21ADSE User’s Manual, Rev. A | |
Freescale Semiconductor | |||