參數(shù)資料
型號： μPD72012
廠商： NEC Corp.
英文描述： Hub Controller For USB(集線器控制器)
中文描述： 集線器控制器的USB（集線器控制器）
文件頁數(shù)： 21/40頁
文件大小： 342K
代理商： ΜPD72012
Preliminary Data Sheet S13918EJ2V0DS00
21
μ
PD72012
(5/5)
Value
Standard ROM code
product
No.
Field
Size
(Bytes)
Contents
003
004
User ROM
code
product
8
bPortPwrCtrlMask
1
Uses a bitmap to show ports for which the
μ
PD72012 does not accept the request when it
receives a control request to perform collective port
control from the host.
If “1”, power to the relevant port is not applied or cut
off even if collective control is set. To control it, it
must be set manually from outside for the port in
question. When the number of ports that can be
port enabled is limited by the PVSEL pin setting or
User ROM code product settings, set “0” for all ports
that are not port enabled.
The meaning of the bitmap is as follows.
Bit 0:
Bit 1:
Bit 2:
Bit 3:
Bit 4:
Bit 5:
Bits 7,6: Always set to “0”.
Always set to “0”.
If “1”, mask port 1 power control.
If “1”, mask port 2 power control.
If “1”, mask port 3 power control.
If “1”, mask port 4 power control.
If “1”, mask port 5 power control.
0x00
0x00
0xXX
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