TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 189

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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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8.4.18. Interrupt Request External Interrupt Mask Register (IRMASKEXT)
8.4.19. Interrupt Debug Register 0 (IRDBR0)
Rev. 3.1 November 1, 2005
MEXT MEXT MEXT MEXT MEXT MEXT MEXT MEXT MEXT MEXT MEXT MEXT MEXT MEXT MEXT MEXT
Bit
31:16
15:0
Bit
31:0
DIR
DIR
[15]
[31]
[15]
31
15
31
15
[14]
DIR
[30]
DIR
[14]
30
14
30
14
Mnemonic
MEXT [15:0]
Mnemonic
DIR [31:0]
[13]
DIR
[29]
DIR
[13]
29
13
29
13
[12]
DIR
[28]
DIR
[12]
28
12
28
12
Figure 8-21 Interrupt Request External Interrupt Mask Register
Table 8-23 Interrupt Request External Interrupt Mask Register
[11]
DIR
[27]
DIR
[11]
27
11
27
11
Field Name
External Request
Mask
Field Name
Debug Interrupt
Request
[10]
DIR
[26]
DIR
[10]
26
10
26
10
Figure 8-22 Interrupt Debug Register 0
Table 8-24 Interrupt Debug Register 0
DIR
[25]
DIR
25
[9]
25
[9]
9
9
RESERVED
DIR
[24]
DIR
24
[8]
Explanation
Reserved
External Interrupt Mask (Default: 0x0000)
These bits specify whether to use the corresponding flag bit as
an external interrupt cause. Interrupt causes are masked when
this bit is “0.”
0: Mask (reset)
1: Do not mask
24
[8]
Explanation
Debug Interrupt Request 0 (Default: 0x00000000)
These bits are for software debug purposed only. A ‘1’ on each
bit will cause the similar interrupt as in Table 8-1
0: No Interrupt
1: Interrupt
Note: DIR[0] and DIR[31] are not used
8
8
0x0000
0x0000
0x0000
R/W
R/W
R/W
DIR
DIR
[23]
8-27
23
[7]
23
[7]
7
7
DIR
DIR
[22]
22
[6]
22
[6]
6
6
DIR
[21]
DIR
21
[5]
21
[5]
5
5
DIR
[20]
DIR
20
[4]
20
[4]
4
4
DIR
[19]
DIR
19
19
[3]
[3]
3
3
DIR
[18]
DIR
18
[2]
18
[2]
2
2
Toshiba RISC Processor
0xE928
DIR
[17]
DIR
17
[1]
17
[1]
1
1
0xE8D8
DIR
[16]
DIR
16
[0]
16
[0]
0
0
: Default
: Default
: Default
: Default
R/W
R/W
R/W
R/W
: Type
: Type
: Type
: Type
TX4939
8
8

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