參數(shù)資料
型號: MC9328MX1VM20R2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 200 MHz, RISC PROCESSOR, PBGA256
封裝: 14 X 14 MM, 1.30 MM HEIGHT, 0.80 MM PITCH, MAPBGA-256
文件頁數(shù): 45/94頁
文件大小: 1487K
代理商: MC9328MX1VM20R2
Signals and Connections
MOTOROLA
MC9328MX1 Advance Information
5
2 Signals and Connections
Table 3 identifies and describes the MC9328MX1 signals that are assigned to package pins. The signals
are grouped by the internal module that they are connected to.
Table 3. Signal Names and Descriptions
Signal Name
Function/Notes
External Bus/Chip Select (EIM)
A [24:0]
Address bus signals
D [31:0]
Data bus signals
EB0
MSB Byte Strobe—Active low external enable byte signal that controls D [31:24]
EB1
Byte Strobe—Active low external enable byte signal that controls D [23:16]
EB2
Byte Strobe—Active low external enable byte signal that controls D [15:8]
EB3
LSB Byte Strobe—Active low external enable byte signal that controls D [7:0]
OE
Memory Output Enable—Active low output enables external data bus
CS [5:0]
Chip Select—The chip select signals CS [3:2] are multiplexed with CSD [1:0] and are
selected by the Function Multiplexing Control Register (FMCR). By default CSD [1:0] is
selected.
ECB
Active low input signal sent by flash device to the EIM whenever the flash device must
terminate an on-going burst sequence and initiate a new (long first access) burst
sequence.
LBA
Active low signal sent by flash device causing the external burst device to latch the starting
burst address.
BCLK
Clock signal sent to external synchronous memories (such as burst flash) during burst
mode.
RW
RW signal—Indicates whether external access is a read (high) or write (low) cycle. Used
as a WE input signal by external DRAM.
Bootstrap
BOOT [3:0]
System Boot Mode Select—The operational system boot mode of the MC9328MX1 upon
system reset is determined by the settings of these pins.
SDRAM Controller
SDBA [4:0]
SDRAM/SyncFlash non-interleave mode bank address multiplexed with address signals A
[15:11]. These signals are logically equivalent to core address p_addr [25:21] in SDRAM/
SyncFlash cycles.
SDIBA [3:0]
SDRAM/SyncFlash interleave addressing mode bank address multiplexed with address
signals A [19:16]. These signals are logically equivalent to core address p_addr [12:9] in
SDRAM/SyncFlash cycles.
MA [11:10]
SDRAM address signals
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