TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 537

• 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

EMAC
18.4.2.9. PCI Function Pointer Register (PCI_Cap_Ptr)
18.4.2.10. PCI Interrupt Register (PCI_Int)
When the value of Max_Lat and Min_Gnt is 0, you do not use the PCI Interrupt Register to determine Maximum Latency
and Minimum Grant.
To check whether this PCI device caused an interrupt, use the software to access the Interrupt Source Register. For
details, see 18.4.3.9 Interrupt Source Register.
Rev. 3.1 November 1, 2005
Bits
31 : 8
7 : 0
Bits
31 : 24
23 : 16
15 : 8
7 : 0
Default
Default
Default
Default
Name
Name
Name
Name
TYPE
TYPE
TYPE
TYPE
31
15
31
15
Mnemonic
CapPtr
Mnemonic
Max_Lat
Min_Gnt
Int_Pin
Int_Line
30
14
30
14
29
13
29
13
Field Name
Reserved
Function Pointer
Field Name
Maximum Latency
Minimum Grant
Interrupt Pin
Function Pointer
RESERVED
28
12
28
12
Max Lat
Int Pin
0x00
0x01
Figure 18-29 PCI Function Pointer Register
R
R
27
11
27
11
Figure 18-30 PCI Interrupt Register
26
10
26
10
25
25
9
9
18-45
RESERVED
Description
CapPtr (Fixed to “0x40”, R)
This field is the offset of the first entry in the function list.
Description
Max_Lat (Fixed to “0x00”, R)
Sets the latency timer value (unit: 1/4 µs).
Min_Gnt (Fixed to “0x00”, R)
Assuming the PCI clock is 33 MHz, this field sets the time
required for Burst transfer (unit: 1/4 µs).
Int_Pin (Fixed to “0x01”, R)
Is set to INTA#.
Int_Line (Default: 0x00, R/W)
Is set by the system. Is the connection information of the interrupt
line.
24
24
8
8
0x3C
23
23
7
7
22
22
6
6
21
21
0x34
5
5
20
20
4
4
Min Gnt
Toshiba RISC Processor
Int Line
CapPtr
0x40
0x00
0x00
R/W
R
R
19
19
3
3
18
18
2
2
17
17
1
1
TX4939
16
16
0
0
18
18