
SDRAM Controller (SDRAMC)
18-2
Freescale Semiconductor
18.1.1
Block Diagram
Block diagram of the SDRAM controller:
Figure 18-1. SDRAM Controller Block Diagram
18.1.2
Features
The SDRAM controller contains:
•
Supports standard SDRAM (single data rate, or SDR) and dual data rate (DDR) SDRAM; one or
the other, not mixed.
•
Support for lower-power/mobile DDR SDRAM.
•
Dynamic 16- or 32-bit fixed memory data port width.
•
16 bytes critical word first burst transfer. Supports sequential address order only.
•
Up to 14 lines of row address, up to 12 (in 32-bit bus mode) or 13 (in 16-bit bus mode) column
address lines, 2 bits of bank address, and two pinned-out chip selects. The maximum row bits plus
column bits equals 24 in 32-bit bus mode or 25 in 16-bit bus mode.
•
Minimum memory configuration of 8 MByte
— 11 bit row address (RA), 8 bit column address (CA), 2 bit bank address (BA), 32-bit bus,
one chip select
SD_CAS
SD_WE
SD_RAS
Data out [63:0]
ADDR
Row
Bank
Column
SD_BA[1:0]
SD_A[13:0]
Command
Data in [63:0]
SDRAM
Controller
State
Machine
Read Data
Buffer
Write Data
Buffer
Address
Output
MUX
Address
Pipeline
Latches
Controls
Row
Bank
Column
Register
File
IPS Interface
Inter
nal System Bus
Address
Address
Input
MUX
Bus Gask
et to
S
D
RAM Controller
SD_CLK/CLK
SD_CKE
Type
SD_DQS[3:2]
SD_SDRDQS
SD_D[31:0]
SD_CS[1:0]
SD_DQM[3:0]
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...