Freescale Semiconductor M9328MX21ADSE User 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