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參數(shù)資料
| 型號： | XCCACE128-I |
| 廠商： | Xilinx Inc |
| 文件頁數(shù)： | 45/69頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 128MBIT ACE FLASH CARD |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 存儲容量： | 128Mb |
| 存儲器類型： | FLASH |
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System ACE CompactFlash Solution
DS080 (v3.0) April 7, 2014
Product Specification
R
— OBSOLETE — OBSOLETE — OBSOLETE — OBSOLETE —
Resetting the System ACE CF Controller
There are three types of reset of the System ACE CF con-
troller:
1.
Power-on-reset (POR)
2.
Device reset
3.
Configuration controller reset
Power-on-Reset (POR)
The POR circuit is used to reset the entire System ACE CF
controller device upon device power up. The built-in POR
circuit can be bypassed in order to use an external POR cir-
cuit. To bypass the built-in POR circuit, the POR_BYPASS
pin should be set to ‘1’ and the POR_RESET pin is used to
reset the device (see Table 2).
Note: If the VCCL rail reaches the threshold voltage before the
VCCH rail reaches its threshold voltage, then consider using
an external POR circuit or RESET pin to hold the device into
reset until the VCCH rail reaches the threshold voltage.
Device-Level Reset
The entire System ACE CF controller device can be reset by
asserting the RESET pin of the System ACE CF Controller.
The timing associated with this operation is shown in
CompactFlash Card Reset
The CompactFlash card can be issued a soft reset com-
mand by issuing a ResetMemCard command through the
CMD[2:0] bits in the SECCNTCMDREG Register (BYTE
Configuration Controller Reset
The configuration controller portion of the System ACE CF
device can be reset by asserting CFGRESET = ‘1’ in the
CONTROLREG MPU register (CFGRESET is bit 7). Assert-
ing CFGRESET = ‘1’ will reset the portion of the System
ACE CF device that controls the reading of ACE file data
from the CF card and configuration of the devices con-
nected to the CFGJTAG port. The CFGRESET register is
used in conjunction with the CFGMODE and CFGSTART
pins/registers to control this configuration process.
Note: It is important to assert CFGRESET=’1’ while
accessing CompactFlash card sector data via the MPU port,
otherwise a CFGERROR condition could result.
Table 2: POR Functionality
POR_BYPASS1
POR_RESET
Description
‘0’
Don’t care
Built-in POR circuit is used to reset the device.
‘1’
‘0’
External POR circuit is selected but the device is not being reset.
‘1’
‘1’ 2
External POR circuit is selected and the device is being reset.
1.
The POR_BYPASS pin should be held at a static ‘0’ or ‘1’ while the System ACE CF controller is receiving power.
2.
Hold at ‘1’ for at least one microsecond.
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| XCCACE256-I | 功能描述:IC 256MBIT ACE FLASH CARD RoHS:否 類別:存儲卡，模塊 >> 存儲器，PC 卡 系列:- 標(biāo)準(zhǔn)包裝:30 系列:- 存儲容量:8GB 存儲器類型:存儲卡 - Extreme III SD? |
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