Burst Mode Signals; Bclk—Burst Clock; Lba—Load Burst Address; Ecb—End Current Burst - Motorola DragonBall MC9328MX1 Reference Manual

11.2.6 Burst Mode Signals

11.2.6.1 BCLK—Burst Clock
The BCLK output signal is used to clock external burst capable devices to synchronize the loading and
incrementing of addresses, and delivery of burst read data to the EIM. Its behavior is affected by the BCM
bit in the EIM configuration register and the SYNC, BCD, PME, and BCS bits in the EIM control
registers.
11.2.6.2 LBA—Load Burst Address
The LBA active-low output signal is asserted during burst mode accesses to cause the external burst
capable device to load a new starting burst address. Assertion of LBA indicates that a valid address is
present on the address bus. Its behavior is affected by the SYNC, BCD, PME, and BCS bits in the EIM
control registers.
11.2.6.3 ECB—End Current Burst
The ECB active-low input signal is asserted by external burst capable devices to indicate the end of the
current (continuous) burst sequence. Following assertion, the EIM terminates the current burst sequence
and initiates a new one.

11.3 Pin Configuration for EIM

Table 11-2 lists the pins used for the EIM module. Many of these pins are multiplexed with other functions
on the device, and must be configured for EIM operation.
MOTOROLA
Table 11-1. Chip Select Address Range
CSEN [x] A [31:24]
cleared -
set 0001000x
set 00010010
set 00010011
set 00010100
set 00010101
set 00010110
External Interface Module (EIM)
Pin Configuration for EIM
Chip Select
inactive
CS0
CS1
CS2
CS3
CS4
CS5
11-3