TMPR4937XBG-300 Toshiba, TMPR4937XBG-300 Datasheet - Page 236
TMPR4937XBG-300
Manufacturer Part Number
TMPR4937XBG-300
Description
Manufacturer
Toshiba
Datasheet
1.TMPR4937XBG-300.pdf
(552 pages)
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
Available stocks
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Quantity
Price
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Part Number:
TMPR4937XBG-300
Manufacturer:
TOSHIBA
Quantity:
16 845
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Part Number:
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Manufacturer:
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1
2
R/W
63:34
33:32
31:29
28:27
DA
47
15
63
31
t
t
1
1
Bit
26
25
CK
RC
t
RP
is used during (i) refresh cycle time, (ii) single Read, (iii) two transfer burst Reads. The bank cycle time is t
= Clock cycle
9.4.2
+ 1t
SWB
R/W
R/W
BC
14
Mnemonic
0
1
CK
RCD
ACP
DIA
if t
BC
PT
—
13
RAS
29
Reserved
1
SDRAM Timing Register (SDCTR)
+ t
RP
Write Active
Period
Active Command
Time
Precharge Time
RAS-CAS Delay
28
12
Bank Cycle Time
1
Field Name
< t
ACP
R/W
RC
—
27
11
in the case of (ii) (iii).
1
R/W
PT
Figure 9.4.2 SDRAM Timing Register (1/2)
26
1
Reserved
Data In to Active(t
Specifies the period from the last Write data to the Active command.
00: Reserved
01: 4 t
10: 5 t
11: 6 t
Bank Cycle Time (t
Specifies the bank cycle time.
000: 5 t
001: 6 t
010: 7 t
011: 8 t
Active Command Period (t
Specifies the active command time.
00: 3 t
01: 4 t
10: 5 t
11: 6 t
Precharge Time (t
Specifies the precharge time.
0: 2 t
1: 3 t
RAS to CAS Delay (t
Specifies the RAS - CAS delay.
0: 2 t
1: 3 t
RCD
R/W
25
Reserved
1
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
1
100: 9 t
101: 10 t
110: Reserved
111: Reserved
ACE
R/W
24
Reserved
0
DAL
RP
PDAE
CK
RC
R/W
9-20
CK
23
0
) (Default: 1)
RCD
) (Default: 11)
) (Default: 101)
) (Default: 1)
RAS
22
0
2
0x30C
Description
) (Default: 11)
R/W
RP
Chapter 9 SDRAM Controller
0
0x8040
R/W
RC
0
0
34
18
0
CASL
R/W
33
17
1
1
R/W
DIA
DRB
R/W :Type
32
48
16
Read/Write
1
0
0
R/W
R/W
R/W
R/W
R/W
RAS
:Type
:Initial value
:Type
:Initial value
:Initial value
:Type
:Initial value
⎯
+
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