參數(shù)資料
型號: XRT86VL38_2
廠商: Exar Corporation
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 20/160頁
文件大?。?/td> 860K
代理商: XRT86VL38_2
XRT86VL38
15
OCTAL T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION
REV. V1.2.0
T
ABLE
4: G
ENERAL
P
URPOSE
I
NPUT
/O
UTPUT
0 C
ONTROL
R
EGISTER
(GPIOCR0)
H
EX
A
DDRESS
: 0
X
0102
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7-4
GPIO0_3DIR
GPIO0_2DIR
GPIO0_1DIR
GPIO0_0DIR
R/W
1111
GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0 Direction
These bits permit the user to define the General Purpose I/O Pins,
GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0
as either Input pins or Output
pins, as described below.
0 – Configures GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0
to function as
input pins.
1 – Configures GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0
to function as
output pins.
1.
If GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0
are configured to
function as input pins, then the user can monitor the state of
these input pins by reading out the state of Bit 3-0 (GPIO0_3/
GPIO0_2/GPIO0_1/GPIO0_0) within this register.
2.
If GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0
are configured to
function as output pins, then the user can control the state of
these output pins by writing the appropriate value into Bit 3-0
(GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0) within this register.
3-0
GPIO0_3
GPIO0_2
GPIO0_1
GPIO0_0
R/W
0000
GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0 Control
The exact function of this bit depends upon whether General Purpose I/
O Pins, GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0 have been configured
to function as input or output pins, as described below.
If GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0 are configured to function
as input pins:
If GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0 are configured to function as
input pins, then the user can monitor the state of the corresponding
input pin by reading out the state of these bits.
N
OTE
:
If GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0 are configured to
function as input pins, then writing to this particular register will
have no effect on the state of this pin.
If GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0 are configured to function
as output pins:
If GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0 are configured to function as
output pins, then the user can control the state of the corresponding
output pin by writing the appropriate value to these bits.
N
OTE
:
GPIO0_3/GPIO0_2/GPIO0_1/GPIO0_0
can be configured to
function as input or output pins, by writing the appropriate
value to Bit 7-4 (GPIO0_3DIR/GPIO0_2DIR/GPIO0_1DIR/
GPIO0_0DIR) within this register.
相關(guān)PDF資料
PDF描述
XRT86VL38IB Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL38IB484 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL38_07 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL38 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL38_1 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
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