TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 449

• Manufacturer Part Number: TX4939XBG-400
• Manufacturer: Toshiba

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

PCIC
16.5.2. Memory Space (m) Lower Base Address (m=0, 1, 2)
Rev. 3.1 November 1, 2005
Bit
31:29
28:20
19:4
3
2:1
0
Default
Default
Memory Space 0 Lower Base Address (10h)
Memory Space 1 Lower Base Address (18h)
Memory Space 2 Lower Base Address (20h)
NAME
NAME
TYPE
TYPE
MSS[31:20]
0xFFC
0xFC0
0xFE0
0xFFE
0xFFF
0xE00
0xF00
0xF80
0xFF0
0xFF8
Mnemonic
BA [31:29]
BA [28:20]
BA [19:4]
PF
Type
MSI
R/W
R/O
31
15
0
0
BA [31:29]
R/W
R/O
30
14
0
0
31
Field Name
Base Address
[31:29]
Base Address
[28:20]
Base Address
Prefetchable
Type
Memory Space
1
1
1
1
1
1
1
1
1
1
R/W
R/O
29
13
Figure 16-75 Memory Space (m) Lower Base Address Register
0
0
Table 16-77 Memory Space (m) Lower Base Address Register
30
1
1
1
1
1
1
1
1
1
1
R/W
R/O
R/O
28
12
or
0
0
Table 16-78 Correspondence of BA [28:20] field
29
1
1
1
1
1
1
1
1
1
1
R/W
R/O
R/O
27
11
or
0
0
Description
Base Address [31:29]
These bits are always R/W and defines Base Address of PCI Memory
windows 0.
Base Address [28:20] or Offset
The TYPE of this bit vary depend on the value of corresponding bit in the
register field of P2GM(m)PLBASE.MSS. See Table 16-78 below.
Corresponding bit = 0 : R/O and this bit is the part of offset address.
Corresponding bit = 1 : R/W and this bit is part of Base Address.
Base Address [19:4] and Offset of PCI Address
Prefetchable
0 : Indicate that the memory is not prefetchable.
1 : Indicate that the memory is prefetchable.
Type (Default = 00)
Locate anywhere in lower 4GB.
Memory Space Indicator
0 : Memory Space
28
0
1
1
1
1
1
1
1
1
1
R/W
R/O
R/O
26
10
or
BA [15:4]
0
0
27
0
0
1
1
1
1
1
1
1
1
R/W
R/O
R/O
25
26
or
0
9
0
0
0
0
1
1
1
1
1
1
1
16-85
BA [28:20]
R/W
R/O
R/O
25
24
or
0
0
0
0
1
1
1
1
1
1
0
8
0
24
R/W
R/O
R/O
0
0
0
0
0
1
1
1
1
1
23
or
0
7
0
23
0
0
0
0
0
0
1
1
1
1
R/W
R/O
R/O
22
or
0
6
0
22
0
0
0
0
0
0
0
1
1
1
R/W
R/O
R/O
21
or
0
5
0
21
0
0
0
0
0
0
0
0
1
1
R/W
R/O
R/O
20
or
Toshiba RISC Processor
0
4
0
20
0
0
0
0
0
0
0
0
0
1
R/W
R/O
PF
19
0
3
1
29
28
27
26
25
24
23
22
21
20
n
R/O
BA [19:16]
18
0
2
Memory Size
TYPE
R/O
0
512 MB
256 MB
128 MB
64 MB
32 MB
16 MB
8 MB
4 MB
2 MB
1 MB
R/O
17
0
1
R/O
R/W
R/W
R/W
R/O
R/O
R/O
R/O
or
TX4939
R/O
MSI
R/O
16
0
0
0
16
16