參數(shù)資料
型號(hào)： 7641
英文描述： 7641 Group Datasheet Datasheet 2145K/MAR.26.02
中文描述： 7641組數(shù)據(jù)表數(shù)據(jù)表2145K/MAR.26.02
文件頁數(shù)： 58/137頁
文件大?。?/td> 2145K
代理商： 7641
57
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
[USB endpoint x (x = 0 to 4) OUT Write Count Registers (Low
and High)] WRT_CNTRL, WRT_CNTH
These registers contain the number of bytes in the endpoint x
OUT FIFO. These are read-only registers. These two registers
must be read after the USB FCU has received a packet of data
from the host. When reading these registers, the lower byte must
be read first, then the higher byte.
When the OUT FIF0 is in double buffer mode, the CPU first reads
the received number of bytes of the former data packet. The next
CPU read can obtain that of the new data packet.
Fig. 51 Structure of USB endpoint x (x = 0 to 4) OUT write count registers
L
o
w
-
o
r
d
e
r
8
b
i
t
s
o
f
t
h
e
n
u
m
b
e
r
o
f
b
y
t
e
s
i
n
e
n
d
p
o
i
n
t
x
O
U
T
F
I
F
O
U
W
S
R
B
T
e
_
n
C
d
N
p
T
o
i
n
t
x
O
U
T
w
r
i
t
e
c
o
u
n
t
r
e
g
i
s
t
e
r
L
o
w
(
a
d
d
r
e
s
s
0
0
5
D
1
6
)
L
b
0
b
7
H
N
i
o
g
h
t
-
o
s
r
e
d
d
e
r
(
“
2
0
”
b
a
i
t
t
s
o
e
f
a
t
d
h
)
e
n
u
m
b
e
r
o
f
b
y
t
e
s
i
n
e
n
d
p
o
i
n
t
x
O
U
T
F
I
F
O
u
r
USB endpoint x OUT write count register High (address 005E
16
)
WRT_CNTH
b
0
b
7
[USB Endpoint x (x = 0 to 4) FIFO Register] USBFIFOx
These registers are the USB IN (transmit) and OUT (receive) FIFO
data registers. Write data to the corresponding register, and read
data from the corresponding register.
When the maximum packet size is equal to or less than half the
FIFO size, these registers function in double buffer mode and can
hold two packets of data. When the IN_PKT_RDY bit is
“
0
”
and
the TX_NOT_EMPTY bit is
“
1
”
, these bits indicate that one packet
of data is stored in the IN FIFO. When the OUT FIFO is in double
buffer mode, the OUT_PKT_RDY flag remains as
“
1
”
after the first
packet of data is read out (it actually goes to
“
0
”
and returns to
“
1
”
after one
φ
cycle).
En
d
p
o
i
n
t
x
I
N
/
O
U
T
F
I
F
O
USB endpoint x FIFO register
(addresses 0060
16
, 0061
16
, 0062
16
, 0063
16
, 0064
16
,)
USBFIFOx
b0
b
7
Fig. 52 Structure of USB endpoint x (x = 0 to 4) FIFO register
相關(guān)PDF資料
PDF描述
7643 IrDA. protocol handler plus endec for DCE Apps, -40C to +85C, 18-SOIC 300mil, TUBE
765-11-(SERIES) Analog IC
765-11-20K Analog IC
765-11-25A Analog IC
765-11E 8 BIT INPUT/OUTPUT EXPANDER, I2C INTERFACE, -40C to +125C, 20-QFN, TUBE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
764-1"x36yd-Black 功能描述:膠帶 BLACK 1X36YD BULK RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Tapes 類型:Shielding 描述/功能:EMI/RFI Foil Shielding Tape 顏色: 材料:Copper Foil 寬度:1 in x 18 yds
764-1"x36yd-Blue 功能描述:膠帶 764 BLUE 1X36YD BULK RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Tapes 類型:Shielding 描述/功能:EMI/RFI Foil Shielding Tape 顏色: 材料:Copper Foil 寬度:1 in x 18 yds
764-1"x36yd-Green 功能描述:膠帶 GREEN 1X36YD BULK RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Tapes 類型:Shielding 描述/功能:EMI/RFI Foil Shielding Tape 顏色: 材料:Copper Foil 寬度:1 in x 18 yds
764-1"x36yd-Orange 功能描述:膠帶 764 ORANGE 1X36 YD BULK RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Tapes 類型:Shielding 描述/功能:EMI/RFI Foil Shielding Tape 顏色: 材料:Copper Foil 寬度:1 in x 18 yds
764-1"x36yd-Red 功能描述:膠帶 764 RED 1X36 YD BULK RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Tapes 類型:Shielding 描述/功能:EMI/RFI Foil Shielding Tape 顏色: 材料:Copper Foil 寬度:1 in x 18 yds
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*