TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 413

• 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
16.4.27. PCI Bus Arbiter Current Request Register (PBACREQ)
This register is a diagnostic register that is only valid when using the on-chip PCI Bus Arbiter.
16.4.28. PCI Bus Arbiter Current Grant Register (PBACGNT)
This is a diagnostic register that is only valid when using the on-chip PCI Bus Arbiter.
Rev. 3.1 November 1, 2005
Bits
31:8
7:0
Default
Default
Default
Default
NAME
NAME
NAME
NAME
Bits
31:8
7:0
TYPE
TYPE
TYPE
TYPE
Mnemonic
CPCIBGS
Mnemonic
CPCIBRS
31
15
31
15
30
14
30
14
Field Name
Rsvd
Current PCI Grant
Status
Field Name
Rsvd
Current PCI Bus
Request Status
29
13
29
13
Figure 16-38 PCI Bus Arbiter Current Request Register
Table 16-39 PCI Bus Arbiter Current Request Register
Figure 16-39 PCI Bus Arbiter Current Grant Register
Table 16-40 PCI Bus Arbiter Current Grant Register
RESERVED
RESERVED
28
12
28
12
27
11
27
11
Description
Current PCI Bus Grant Status (Default: 0x80)
This register indicates the current PCI Bus Grant output signal (PCI Controller
and GNT*[5:0]). CPCIBGS[7] corresponds to the PCI Controller, and
CPCIBGS[5:0] correspond to GNT*[5:0].
Description
Current PCI Bus Request Status (Default: 0x00)
This register indicates the status of the current PCI Bus Request Input Signal
(PCI Controller and REQ*[5:0]). CPCIBRS[7] corresponds to the PCI
Controller and CPCIBRS[5:0] correspond to REQ*[5:0].
26
10
26
10
25
25
9
9
16-49
RESERVED
RESERVED
24
24
8
8
23
23
7
7
22
22
6
6
21
21
5
5
20
CPCIBRS
20
CPCIBGS
Toshiba RISC Processor
4
4
0x00
0x80
R/W
R/W
19
19
3
3
18
18
2
2
17
17
1
1
R/W
⎯
R/W
R/W
⎯
R/W
TX4939
16
16
0
0
16
16