11-4
MC9328MX1 Reference Manual
MOTOROLA
External Interface Module (EIM)
NOTE:
The user must ensure that the data direction bits in the GPIO are set to the
correct direction for proper operation. See Section 32.5.1, “Data Direction
Registers,” on page 32-9 for details.
Table 11-2. EIM Pin List
Pin Name
Direction
Description
External I/O Signals
D [31:0]
input/
output
External 32-bit data bus
A [24:0]
output
External address bus
CS [5:0]
output
Active low external chip selects
DTACK
Input
External input data acknowledge signal for CS5
EB [3:0]
output
Active low external enable bytes signals. EB [0] controls D [31:24]*
OE
output
Active low output enable for external data bus
BCLK
output
Clock for external synchronous memories (such as burst flash)
LBA
output
Active low signal sent to flash device causing the external device to latch the
address.
RW
output
Indicates whether external access is a read (high) or write (low) cycle
ECB
input
input signal identifies when to end an external burst access
*EB [1] controls D [23:16], EB [2] controls D [15:8], EB [3] controls D [7:0]
Table 11-3. Pin Configuration
Pins
Setting
Configuration Procedure
D [31:0]
Not Multiplexed
A [24]
Primary function of GPIO Port
A [0]
1. Clear bit 0 of Port A GPIO In Use Register (GIUS_A)
2. Clear bit 0 of Port A General Purpose Register (GPR_A)
A [23:16]
Primary function of GPIO Port
A [31:24]
1. Clear bits [31:24] of Port A GPIO In Use Register (GIUS_A)
2. Clear bits [31:24] of Port A General Purpose Register (GPR_A)
A [15:1]
Not Multiplexed
A [0]
Primary function of GPIO Port
A [21]
1. Clear bit 21 of Port A GPIO In Use Register (GIUS_A)
2. Clear bit 21 of Port A General Purpose Register (GPR_A)
CS [5:4]
Primary function of GPIO Port
A [23:22]
1. Clear bits [23:22] of Port A GPIO In Use Register (GIUS_A)
2. Clear bits [23:22] of Port A General Purpose Register (GPR_A)
CS [3]
Primary function of pin shared
with SDRAM’s CSD1
1. Clear bit 1 (SDCS1_SEL) of Function Muxing Control Register
(FMCR)
Summary of Contents for DragonBall MC9328MX1
Page 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Page 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Page 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Page 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Page 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Page 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Page 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Page 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Page 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Page 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Page 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Page 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Page 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Page 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Page 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Page 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Page 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Page 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Page 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...