TMPR4937XBG-300 Toshiba, TMPR4937XBG-300 Datasheet - Page 93
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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Reserved
ARBMD
R/W
63:32
30:15
14:0
63
47
31
15
Bit
1
31
5.2.6
30
14
Mnemonic
PRIORITY
ARBMD
⎯
⎯
G-Bus Arbiter Control Register (GARBC)
Reserved
Arbitration
Mode
Reserved
Arbitration
Priority
Field Name
Figure 5.2.6 G-Bus Arbiter Control Register
Specifies how to prioritize G-Bus arbitration.
0 = Fixed priority. The G-Bus arbitration priority conforms to
1 = Round-robin (in a round-robin fashion, PCIC0 > PDMAC >
Note: Before accessing the PCI by DMAC, specify round-robin
Specifies the priority when ARBMD (bit [16]) specifies fixed-
priority mode.
[14:12] = Bus master with the highest priority
[11:9] = Bus master with the second highest priority
[8:6] = Bus master with the third highest priority
[5:3] = Bus master with the fourth highest priority
[2:0] = Reserved (Please do not rewrite.)
000 = PCI controller
001 = PDMAC
010 = DMAC0
011 = DMAC1
A priority of PCIC > PDMAC > DMAC0 > DMAC1 is initially set
up.
the content of the PRIORITY field (bits [14:0]).
DMAC0 > DMAC1 > PCIC1)
as the priority mode. If fixed-priority mode is selected, a
dead lock is likely to occur in PCI bus access.
000_001_010_011_100
Reserved
Reserved
Reserved
PRIORITY
R/W
5-13
Description
⎯
⎯
Chapter 5 Configuration Registers
0xE030
Initial Value Read/Write
1
000_001_01
0_011_100
⎯
⎯
48
32
16
0
R/W
R/W
: Type
: Initial value
: Type
: Initial value
: Type
: Initial value
: Type
: Initial value
⎯
⎯
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