Freescale Semiconductor M9328MX21ADSE - Manual (Page 45)

Support Information
M9328MX21ADSE User’s Manual, Rev. A
Freescale Semiconductor 3-17
32 D29 DATA BIT 29 — Bidirectional data bit from the processor
33 D17 DATA BIT 17 — Bidirectional data bit from the processor
34 D30 DATA BIT 30 — Bidirectional data bit from the processor
35 D16 DATA BIT 16 — Bidirectional data bit from the processor
36 D31 DATA BIT 31 — Bidirectional data bit from the processor
37 SDWE_B SDRAM WRITE ENABLE — Write data strobe to SDRAM, active low
38 RAS_B ROW ADDRESS STROBE — Clocks row address to SDRAM
39 A20 ADDRESS BIT 20 — Output line for addressing external devices
40 CAS_B COLUMN ADDRESS STROBE — clocks column address to SDRAM
41 A19 ADDRESS BIT 19 — Output line for addressing external devices
42 CS2_B CHIP SELECT 2 — Chip select signal, active low output
43 A3 ADDRESS BIT 3 — Output line for addressing external devices
44 MA11 MULTIPLEXED ADDRESS BIT 11 — Multiplexed address bit to SDRAM
45 A4 ADDRESS BIT 4 — Output line for addressing external devices
46 DQM2_EB2_B PC_REG PCMCIA REGISTER SELECT — Output to select Attribute Memory*
47 A5 ADDRESS BIT 5 — Output line for addressing external devices
48 DQM3_EB3_B PC_IORD PCMCIA I/O READ — Output signals to read I/O*
49 A2 ADDRESS BIT 2 — Output line for addressing external devices
50 A23 ADDRESS BIT 23 — Output line for addressing external devices
51 A21 ADDRESS BIT 21 — Output line for addressing external devices
52 A22 ADDRESS BIT 22 — Output line for addressing external devices
54 LBA_B
LOAD BURST ADDRESS — Active low signal asserted during burst mode
accesses
55 TP12 Test point
56 A24 ADDRESS BIT 24 — Output line for addressing external devices
57 TP13 Test point
58 A25 ADDRESS BIT 25 — Output line for addressing external devices
59 TP14 Test point
*The signal name in italics is the function intended for operation with this connector. It is multiplexed inside the i.MX21
processor with the listed signal.
Table 3-4. CPU to Option Card PK2 Connector Signals (continued)
Pin(s) Signal Description