Справочник Пользователя для Lucent Technologies MN10285K
I/O Ports
I/O Port Control Registers
MN102H75K/F75K/85K/F85K LSI User Manual
Panasonic Semiconductor Development Company
287
Panasonic
PCNT2: Port Control Register 2
x’00FF92’
Always set bits 7 to 3 of PCNT2
to 0.
You cannot read from or write to
the registers associated with a
function that is disabled.
P7P8CNT: Ports 7 and 8 forced pullup
Ports 7 and 8 are only available in the quad flat package.
0: Pull up
1: Don’t pull up
1: Don’t pull up
I2COFF: I
2
C function enable
0: Enable
1: Disable
1: Disable
PWMOFF: PWM function enable
0: Enable
1: Disable
Setting the I2COFF or PWMOFF bits to 1 shuts off the system clock sup-
ply to the associated block, which reduces power dissipation.
OSDREGE: OSD registers read/write enable
To read or write to the OSD registers, you must first set this bit to 1.
0: Disable
1: Enable
1: Enable
Bit:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
—
—
—
—
—
—
—
P7P8
CNT
(Test Bits)
I2C
OFF
PWM
OFF
OSD
REGE
Reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W:
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W