mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 213

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA
In the burst-write, page-hit example, shown in Figure 9-12, after the SDRAM controller
determines that the access is a page hit in T2, the burst transfer begins in T3.
A10_PRECHG
SDADR[13:0]
SDBA[1:0]
SDCLKE
Figure 9-11. SDRAM Burst Write, 32-Bit Port, Page Miss, Access = 7-1-1-1
SDCLK
BS[3:0]
D[31:0]
SDWE
SDCS
RAS0
CAS0
T0
CF2 Core
T1
Address
Issue
T2
Miss?
Page
Hit or
Precharge
T3
Old Page
Chapter 9. SDRAM Controller
Bank x
T4
New Page
T5
Activate
Bank y
Row
Row
T6
T7
Write
Data
1
Col
T8
Write
Data
2
Col
Bank y
SDRAM Interface
T9
Write
Data
3
Col
T10
Write
Data
4
Col
9-19
T1