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参数资料
| 型号： | YKNIFEX4HW |
| 英文描述： | IC APEX 20KE FPGA 100K |
| 中文描述： | 耶洛奈夫参考平台硬件设计手册 |
| 文件页数： | 24/24页 |
| 文件大小： | 186K |
| 代理商： | YKNIFEX4HW |
Yellowknife X4 Hardware Reference Manual
Page 8 /22
Motorola Inc.
Unrestricted Distribution Permitted
98 Feb 20
CHANGES: X4 replaces the on-board regulator with a VRM.
2.5.1 Power Key Control
Yellowknife X4 implements the MacOS compatible power control for ADB keyboards.
When the power is off, a transition on the ADB_POWER* signal (to ground) controls the
APC of the Super I/O, turning the system on. Once power is on, a MOSFET clamps the
control signals using system power, preventing other transitions on the ADB_POWER*
signal from affecting the APC. This prevents the ADB keyboard power button from turing
off power before software has an opportunity to intervene.
CHANGES: X4 implements the correct MacOS behavior for the ADB power key.
out
2-3
out
2.20V Core
out
2-3
2.30V Core
out
2-3
out
2.40V Core
out
2-3
out
2-3
2.50V Core
out
2-3
out
2.60V Core
out
2-3
2.70V Core
out
2-3
out
2.80V Core
out
2-3
out
2-3
2.90V Core
out
2-3
out
2-3
out
3.00V Core
out
2-3
out
2-3
3.10V Core
out
2-3
out
3.20V Core
out
2-3
out
2-3
3.30V Core
out
2-3
out
3.40V Core
out
2-3
3.50V Core
2-3
out
1.30V Core
2-3
out
2-3
1.35V Core
2-3
out
2-3
out
1.40V Core
2-3
out
2-3
1.45V Core
2-3
out
2-3
out
1.50V Core
2-3
out
2-3
out
2-3
1.55V Core
2-3
out
2-3
out
1.60V Core
2-3
out
2-3
1.65V Core
2-3
out
1.70V Core
2-3
out
2-3
1.75V Core
2-3
out
2-3
out
1.80V Core
2-3
out
2-3
1.85V Core
2-3
out
1.90V Core
2-3
out
2-3
1.95V Core
2-3
out
2.00V Core
2-3
2.05V Core
Table 1: Optional VID Control
J45
VID4
J46
VID3
J47
VID2
J48
VID1
J49
VID0
Result
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