参数资料
型号: EPCS1
厂商: Altera Corporation
英文描述: Serial Configuration Devices
中文描述: 串行配置器件
文件页数: 13/32页
文件大小: 236K
代理商: EPCS1
Altera Corporation
July 2004
Core Version a.b.c variable
4–13
Configuration Handbook, Volume 2
Serial Configuration Devices (EPCS1, EPCS4, EPCS16 & EPCS64) Data Sheet
Read Status Operation
The read status operation code is
b'0000 0101
, with the MSB listed first.
You can use the read status operation to read the status register.
Figures 4–7
and
4–8
show the status bits in the status register of both
serial configuration devices.
Figure 4–7. EPCS4 Status Register Status Bits
Figure 4–8. EPCS1 Status Register Status Bits
Setting the write in progress bit to 1 indicates that the serial configuration
device is busy with a write or erase cycle. Resetting the write in progress
bit to 0 means no write or erase cycle is in progress.
Resetting the write enable latch bit to
0
indicates that no write or erase
cycle will be accepted. Set the write enable latch bit to
1
before every write
bytes, write status, erase bulk, and erase sector operation.
The non-volatile block protect bits determine the area of the memory
protected from being written or erased unintentionally.
Tables 4–9
and
4–10
show the protected area in both serial configuration devices with
reference to the block protect bits. The erase bulk operation is only
Bit 7
Bit 0
Block Protect Bits [2..0]
Write In
Progress Bit
Write Enable
Latch Bit
BP2
BP1
BP0
WEL
WIP
Bit 7
Bit 0
Block Protect
Bits [1..0]
Write In
Progress Bit
Write Enable
Latch Bit
BP1
BP0
WEL
WIP
相关PDF资料
PDF描述
EPCS16 Serial Configuration Devices
EPCS16SI16N Serial Configuration Devices
EPCS1SI8N Serial Configuration Devices
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EPCS4SI8N Serial Configuration Devices
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