参数资料
型号: STPCI2HDYI
厂商: STMICROELECTRONICS
元件分类: 外设及接口
英文描述: MULTIFUNCTION PERIPHERAL, PBGA516
封装: PLASTIC, BGA-516
文件页数: 57/109页
文件大小: 2430K
代理商: STPCI2HDYI
STPC ATLAS
Issue 1.1 - March 23, 2004
51/109
4.5.2 RESET SEQUENCE
Figure 4-4 describes the reset sequence of the
STPC, also called warm reset.
The constraints on the strap options and the bus
activities are the same as for the cold reset.
The SYSRSTI# pulse duration must be long
enough to have all the strap options stabilized and
must be adjusted depending on resistor values.
It is mandatory to have a clean reset pulse without
glitches as the STPC could then sample invalid
strap option setting and enter into an umpredicta-
ble mode.
While SYSRSTI# is active, the PCI clock PLL runs
in open loop mode at a speed of few 100’s KHz.
Figure 4-4. Reset timing diagram
Strap Options
SYSRSTI#
SYSRSTO#
14 MHz
VALID CONFIGURATION
HCLK
PCI_CLK
2.3 ms
ISACLK
1.6 V
MD[63:0]
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