TMPR4937XBG-300 Toshiba, TMPR4937XBG-300 Datasheet - Page 238

• Manufacturer Part Number: TMPR4937XBG-300
• Manufacturer: Toshiba

Specifications of TMPR4937XBG-300

• Family Name: TX49
• Device Core Size: 64b
• Frequency (max): 300MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 1.5V
• Operating Supply Voltage (max): 1.6V
• Operating Supply Voltage (min): 1.4V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 484
• Package Type: BGA
• Lead Free Status / Rohs Status: Compliant

63:32
31:24
23:16
63
47
31
15
15:8
Bit
7:4
3:0
9.4.3
14
Mnemonic
MDLNO
VERNO
CMD
CCE
—
—
13
SDRAM Command Register (SDCCMD)
Model Number
Version Number
Command
Channel Enable
Command
12
Reserved
MDLNO
Field Name
0x30
R
—
—
11
Figure 9.4.3 SDRAM Command Register
Reserved
Model Number (Default: 0x30)
Indicates the model number. The default value is 0x30 for the TX4937.
This field is Read Only.
Version Number (Default: 0x10)
Indicates the version number. The default value is 0x10 for the TX4937.
This field is Read Only.
Reserved
Command Channel Enable
Setting one of these bits to “1” enables the command of the corresponding
channel. This command is simultaneously executed on all channels that
are enabled.
bit 7: Channel 3
bit 6: Channel 2
bit 5: Channel 1
bit 4: Channel 0
Command
Specifies a command that is performed on memory.
0x0: NOP command
0x1: Set Mode Register command
Set SDRAM Mode Register from SDCTR value
0x2: Reserved
0x3: Precharge All command
Precharge All SDRAM Banks
0x4: Self-Refresh Mode command
Sets SDRAM to the Self-Refresh Mode
0x5: Power Down Mode Command
Set SDRAM to the Power Down Mode
0x6: Normal Mode Command
Cancel Self-Refresh/Power Down Mode
0x7-0xf: Reserved
24
Reserved
Reserved
8
9-22
23
7
Description
CCE
R/W
0x0
Chapter 9 SDRAM Controller
0x8058
4
VERNO
0x10
R
3
CMD
R/W
0x0
16
48
32
Read/Write
0
R
R
R/W
R/W
:Type
:Initial value
:Type
:Initial value
:Type
:Initial value
:Type
:Initial value
⎯
⎯