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參數(shù)資料
| 型號： | MB86703PF |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP80 |
| 封裝： | 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 14/32頁 |
| 文件大?。?/td> | 189K |
| 代理商： | MB86703PF |
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Plug and Play ISA Controller
MB86703
21
Notes:
1. Each interrupt must be programmed to a unique value if it is used.
0x018
(note 1)
Interrupt Request B:
See 0x017 above
0x019
(note 1)
Interrupt Request C:
See 0x017 above
0x01A
(note 1)
Interrupt Request D:
See 0x017 above
0x01B
Activate:
Bits <3:0>: Logical Devices 3, 2, 1, 0 respectively
Note: Enabled/Disabled by state of ACTENA input pin
Table 12. Default Register Values in EEPROM (continued)
BYTE
ADDRESS
CONTENTS
MEMORY MODE
DMA MODE
READING DATA FROM THE EEPROM
In order to read the contents of the EEPROM, the
MB86703 must be placed into the
Conguration State.
The ow chart in Figure 4 outlines the process. Data is
read sequentially from the Resource Data Register,
one byte at a time, starting at address 0x000. Note that
the Status Register must be polled before each read of
the Resource Data Register to assure that the data
from the EEPROM has been obtained and is ready to
be read.
CAUTION: The process of resetting the EEPROM
read data pointer to address 0x000 by writing 0x03 into
PnP register 0x26 overwrites the current EEPROM
read pointer value. Subsequent operations may be
incorrect if the MB86703 is not reset before resuming
normal operation.
.
Done?
Exit
Yes
No
Read Data Byte from
Resource Data Register
(0x04)
Bit<0> = 1?
Yes
No
Read Status Register
(0x05)
Place MB86703 in
Configuration State
ISSUE SOFTWARE
RESET
Reset Read Pointer
Write 0x03 to Reg. 0x26
Read Pointer at
EEPROM Word 0x000
Figure 4. Reading Data from the EEPROM
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相關(guān)代理商/技術(shù)參數(shù) |
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| MB86832-100PFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:32-bit Embedded Controller |
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