TMPR4937XBG-300 Toshiba, TMPR4937XBG-300 Datasheet - Page 108
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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Upper Address
Lower Address
7.3.5.3
ADDR Bit
8-bit Bus Width Mode
which are the upper address, are multiplexed to external ADDR[19:12]. In other words, the
address is shifted up two bits or more relative to the 32-bit bus mode when output. As a result, the
maximum memory size of the 8-bit bus mode is 256 MB.
the external bus. 8-bit access is executed twice when performing 1-half-word access. 8-bit access
is executed four times when performing 1-word access. 8-bit access is executed eight times when
performing 1-double-word access. When a Burst cycle is executed, eight 8-bit cycles are executed
for each Burst access when the Bus cycle tries to request a byte combination other than double-
word data.
Table 7.3.6 Address Output Bit Correspondence in the 8-bit Mode
DATA[7:0] becomes valid.
Bits [19:0] of the physical address are output to ADDR[19:0]. The internal address bits [27:20],
When a Single cycle that accesses 1-Byte data is executed, 8-bit access is executed only once on
19 18 17 16 15 14 13 12 11 10 9
27 26 25 24 23 22 21 20
19 18 17 16 15 14 13 12 11 10
7-8
Chapter 7 External Bus Controller
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