Datasheet

Microcontroller Interface
36
SGLS139B − October 2003 − Revised April 2004TSB12LV32-EP
BCLK
MWR
MCS
MCA
MA[0:6]
MD[0:7]
MD[8:15]
M8BIT/SIZ0
MCMODE/SIZ1
COLDFIRE
TEA
A1 A2 A3
D5
D6D4D2
D1 D3
Figure 3−13. ColdFire Read
The ColdFire write transaction is shown in Figure 3−14. Unlike the handshake and fixed-timing write modes,
the ColdFire write operation requires the data on the MD lines be available one BCLK cycle after the address
on the MA lines is sampled. Violating this timing requirement can result in a transfer error, causing TEA
to be
asserted low for one BCLK cycle.