TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 396

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TX4939XBG-400

Manufacturer Part Number
TX4939XBG-400
Description
Manufacturer
Toshiba
Datasheet

Specifications of TX4939XBG-400

Cpu Core
TX49/H4 90nm
Clock Mhz/max Mips
400/520
Inst./data Cache
32KB (4 Way)/32KB (4 Way)
Tlb
x
1cycle Mac
x
Volts (v)
1.25/2.5/3.3
Peripherals
DDR, NAND, ATA, ETHERNET, SECURITY, FPU, MMU, SPI, I2S, I2C, PCI, VIDEO, UART, TIMER, RTC
Companion Chip
TC86C001FG
Package
PGBA456

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PCIC
16.4.5. P2G Memory Space (m) PCI Lower Base Address Register
This register corresponds to the Memory Space (m:m=0,1,2) Lower Base Address Register at offset address 0x10[18h,20h]
of the PCI Configuration Space.
This register is accessible both Host Mode and Satellite Mode. In Satellite Mode this register is read only.
Rev. 3.1 November 1, 2005
Bit
31:20
19:4
3
2:1
0
Default
Default
NAME
NAME
TYPE
TYPE
P2GM0PLBASE, P2GM1PLBASE, P2GM2PBASE
Mnemonic
BA [31:20]
PF
TYPE
MSI
R/W
R/O
R/O
31
15
or
0
0
Figure 16-18 P2G Memory Space (m) PCI Lower Base Address Register (m=0,1,2)
Table 16-18 P2G Memory Space (m) PCI Lower Base Address Register (m=0,1,2)
R/W
R/O
R/O
30
14
or
0
0
Field Name
Base Address
RESERVED
Prefetchable
Type
Memory Space
R/W
R/O
R/O
29
13
or
0
0
R/W
R/O
R/O
28
12
or
0
0
R/W
R/O
R/O
27
11
or
0
0
Description
Sets the lower address of the PCI base address in Target Access
Memory Space n. The size of Memory Space is defined by the
value of P2GM(m)CFG.MSS. The default size of the three
memory windows are,
P2GM0PLBASE Default:512MB
P2GM1PLBASE Default:16MB
P2GM2PBASE Default:1MB
Please see 16.4.6 for more details.
Note : This bit field will be R/O in Satellite Mode.
Prefetchable
1: Indicates that memory is prefetchable.
0: Indicates that memory is not prefetchable.
The default value of PF for the three memory windows are
P2GM0PLBASE Default:1
P2GM1PLBASE Default:1
P2GM2PBASE Default:0
Please see 16.4.6 for more details.
Type (Default: 00)
00: Indicates that an address is within a 32-bit address region
Memory Space Indicator (Fixed Value: 0)
0: Indicates that this Base Address Register is for use by the PCI
Memory Space
Base Address [Host Mode] (Default=0x000)
RESERVED
R/W
R/O
R/O
BA [31:20]
26
10
or
0
0
R/W
R/O
R/O
25
or
0
9
0
16-32
R/W
R/O
R/O
24
or
0
8
0
R/W
R/O
R/O
23
or
0
7
0
R/W
R/O
R/O
22
or
0
6
0
R/W
R/O
R/O
21
or
0
5
0
R/W
R/O
R/O
20
or
Toshiba RISC Processor
0
4
0
R/O
R/O
1/0
PF
19
0
3
RESERVED
R/O
18
0
2
Default
0x000
0x0000
1/0
0
0
TYPE
R/O
00
R/O
17
0
1
TX4939
R/W
R/W
R/O
R/O
R/O
R/O
R/O
or
R/O
MSI
R/O
16
0
0
0
16
16

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