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參數(shù)資料
| 型號： | 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)： | 46/137頁 |
| 文件大?。?/td> | 2145K |
| 代理商： | 7641 |
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45
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
USB Reception
Endpoint 0 to Endpoint 4 have OUT (receive) FIFOs individually.
Each endpoint
’
s FIFO is configured in following way:
Endpoint 0: 16-byte
Endpoint 1: Mode 0: 800-byte
Mode 1: 1024-byte
Mode 2: 2048-byte
Mode 3: 0-byte
Mode 4: 1280-byte
Mode 5: 1168-byte
Endpoint 2: Mode 0: 32-byte
Mode 1: 128-byte
Endpoint 3: 16-byte
Endpoint 4: 16-byte
When Endpoint 1 or Endpoint 2 is used for data receive, the OUT
FIFO size can be selected. Endpoint 1 and Endpoint 2 have pro-
grammable IN-FIFOs size; 6 modes for Endpoint 1, and 2 modes
for Endpoint 2. Each mode can be selected by the USB endpoint
FIFO mode selection register (address 005F
16
).
Data transmitted from the host-PC is stored in Endpoint x FIFO
(0060
16
to 0064
16
). Every time the data is stored in the FIFO, the
internal OUT FIFO write pointer is increased by 1. When one com-
plete data packet is stored, the OUT_PKT_RDY flag is set to
“
1
”
and the number of received data packets is stored in USB End-
point x OUT write count registers (Low and High). When the
AUTO_CLR bit is
“
1
”
and the received data is read out from the
OUT FIFO, the OUT_PKT_RDY flag is cleared to
“
0
”
. When the
AUTO_CLR bit is
“
1
”
, the OUT_PKT_RDY flag will not be cleared
automatically by the FIFO read; it must be cleared by software.
(The AUTO-CLR bit function is not applicable in Endpoint 0.)
When MAXP size
≤
(a half of OUT FIFO size), the OUT_FIFO can
receive 2 packets (double buffer). At this time, the OUT_ FIFO sta-
tus can be checked by the OUT_PKT_RDY flag. When the FIFO
holds two packets and one packet is read from the FIFO, the
OUT_PKT_RDY flag is not cleared even if it is set to
“
0
”
. (The flag
returns from
“
0
”
to
“
1
”
in one
φ
cycle after the read-out). During
double buffer mode, the USB Endpoint x OUT write count regis-
ters (Low and High) holds the number of previously received
packets. This count register is updated after reading out one of
packets in the OUT FIFO and clearing the OUT_PKT_RDY flag to
“
0
”
.
TOGGLE Initialization
In order to initialize the data toggle sequence bit of the endpoint,
in other words, resetting the next data packet to DATA0; set the
ISO/TOGGLE_INT bit to
“
1
”
and then clear back to
“
0
”
.
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 |
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