TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 614

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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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Manufacturer
Quantity
Price
Part Number:
TX4939XBG-400
Manufacturer:
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TX4939XBG-400
Manufacturer:
TOSHIBA
Quantity:
10 440
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TX4939XBG-400
Manufacturer:
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Manufacturer:
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Quantity:
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I2C
22.2.2. I2C Transmit/Receive Register (I2C_TXRR)
22.2.3. I2C Command Register (I2C_CR)
Rev. 3.1 November 1, 2005
Bit
31:8
7:1
0
Bit
31:8
7
6
5
4
3
2:0
Reset Value
Reset Value
Reset Value
Reset Value
R/W/RO
R/W/RO
WO
WO
Bit
Bit
Bit
Bit
Note: X means don’t care
Note: X means don’t care
WO WO WO WO WO WO WO WO WO WO WO WO WO WO WO WO
WO WO WO WO WO WO WO WO WO WO WO WO WO WO WO WO
RO
RO
31
15
31
15
0
0
X
X
Field Name
---
TXRR[7:1]
TXRR[0]
Field Name
Reserved
STA
STO
RD
WR
ACK
Reserved
RO
RO
30
14
30
14
X
X
0
0
RO
RO
29
13
29
13
0
0
X
X
RO
RO
28
12
28
12
X
X
0
0
Description
STA, generate (repeated) start condition
STO, generate stop condition
RD, read from slave
WR, write to slave
ACK, when a receiver, send ACK (ACK = “0”) or NACK (ACK = “1”)
RO
RO
Description
Reserved.
Write: Next bytes to transmit via I2C
Read: Read back the receive data (bit [7:1])
Write:
In case of a data transfer this bit represent the data’s LSB.
Incase of a slave address transfer this bit represents the RW bit
Read: Read back the receive data (bit[0]).
27
11
27
11
0
0
X
X
“1” = Reading from slave
“0” = Write to slave
RO
RO
26
10
26
10
X
X
0
0
22-4
RO
RO
25
25
0
9
0
X
9
X
RO
RO R/W R/W R/W R/W R/W R/W R/W R/W
24
24
X
X
0
8
0
8
RO
23
23
0
7
0
X
7
X
RO
22
22
X
X
0
6
0
6
RO
21
21
5
X
5
X
0
0
RO
20
20
0
4
0
X
4
X
Toshiba RISC Processor
RO
19
19
3
X
3
X
0
0
RO
18
18
0
2
0
X
2
X
0xF904
0xF908
RO
17
17
1
X
1
X
0
0
RO
16
16
0
0
0
X
0
X
TX4939
22
22

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