TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 672

• 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

ACLINK
24.4.10. ACLC GPO Data Register
This register specifies GPIO (slot 12) output data.
Writing a value into this register needs several BITCLK cycles to take effect.
access be executed until the previous write access takes effect (completes), by reading the ACGPODAT.WRPEND bit
prior to writing this register.
reason.
Rev. 3.1 November 1, 2005
Default:
Default:
Name:
Name:
R/W:
R/W:
Bit
31:20
20
19:1
0
Bit:
Bit:
Mnemonic Field Name
⎯
WRPEND
GPODAT
⎯
31
15
30
14
Reserved
Write Pending
GPIO-Out data
⎯
29
13
If it is set for a long time, the BITCLK signal on the AC-link is probably inactive for whatever
28
12
27
11
Description
WRPEND: Write Pending
GPODAT: GPIO-Out data
Figure 24-15 ACGPODAT Register
Table 24-17 ACGPODAT Register
Reserved
R
R
W
R
26
10
0:
1:
Reads back the value previously written to this field.
Writes data to the outgoing slot 12 bits[19:1].
Reads always ‘0’.
Indicates that the previous write operation is complete and
the ACGPODAT register is ready to be written.
Indicates that the previous write operation is not complete
and the ACGPODAT register is not yet ready to be written.
25
9
24-30
GPODAT
0x00000
R/W
24
8
23
7
22
6
The software must guarantee that no write
21
5
WRPE
ND
20
Toshiba RISC Processor
R
0
4
19
3
0xF744
18
GPODAT
2
0x00000
R/W
17
R/W
⎯
R
R/W
R
1
TX4939
Rsvd
16
R
0
0
24
24