TMPR4937XBG-300 Toshiba, TMPR4937XBG-300 Datasheet - Page 85
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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
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Part Number:
TMPR4937XBG-300
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TOSHIBA
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12:10 PCIDIVMODE PCICLK
Bit
9:8
7:6
5:3
2
1
0
Mnemonic
ACEHOLD
ARMODE
ENDIAN
SYSSP
⎯
⎯
Frequency
Division Ratio
Reserved
SYSCLK
frequency
division ratio
Reserved
Endian
ACK*/READY
Mode
ACE Hold
Field Name
Figure 5.2.1 Chip Configuration Register (3/3)
Specifies the frequency division ratio of the PCI bus clock
output (PCICLK[5:0]) frequency to the clock frequency
(CPUCLK) of the TX49/H3 core.
001: PCICLK frequency = CPUCLK frequency ÷ 4
011: PCICLK frequency = CPUCLK frequency ÷ 4.5
101: PCICLK frequency = CPUCLK frequency ÷ 5
111: PCICLK frequency = CPUCLK frequency ÷ 5.5
000: PCICLK frequency = CPUCLK frequency ÷ 8
010: PCICLK frequency = CPUCLK frequency ÷ 9
100: PCICLK frequency = CPUCLK frequency ÷ 10
110: PCICLK frequency = CPUCLK frequency ÷ 11
Indicates the frequency division ratio of the SYSCLK
frequency to the G-Bus clock frequency (GBUSCLK).
LL: 00: SYSCLK frequency = GBUSCLK frequency ÷ 4
LH: 01: SYSCLK frequency = GBUSCLK frequency ÷ 3
HL: 10: SYSCLK frequency = GBUSCLK frequency ÷ 2
HH: 11: SYSCLK frequency = GBUSCLK frequency
Indicates the TX4937 endian mode setting.
L: 0 = Little endian mode
H: 1 = Big endian mode
Selects an ACK*/READY signal operation mode for the
external bus controller (refer to Section 7.3.6).
0 = ACK*/READY dynamic mode
1 = ACK*/READY static mode
Specifies the hold time of an address relative to the external
bus controller ACE* signal (refer to Section 7.3.4).
0 = Switch the address at the same time when the ACE*
signal is deasserted.
1 = Switch the address one clock cycle after the ACE* signal
is deasserted.
5-5
Description
⎯
⎯
Chapter 5 Configuration Registers
Initial Value Read/Write
ADDR[11:10]
,0
ADDR[14:13] R
ADDR[12]
0
1
⎯
⎯
R/W
R
R/W
R/W
⎯
⎯
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