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7643 Datasheet(PDF) 231 Page - Renesas Technology Corp

Part # 7643
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  424 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7643 Datasheet(HTML) 231 Page - Renesas Technology Corp

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Rev.2.00
Aug 28, 2006
page 110 of 202
7643 Group
REJ09B0133-0200
APPLICATION
2.6 USB
Fig. 2.6.13 Structure of USB endpoint index register
USB endpoint index register
b7 b6 b5 b4 b3 b2 b1 b0
USB endpoint index register
(USBINDEX : address 5816)
b
0
1
2
Name
0
Functions
At reset R W
0
0
b2b1b0
0 0 0 : Endpoint 0
0 0 1 : Endpoint 1
0 1 0 : Endpoint 2
0 1 1 : Not used
1 0 0 : Not used
1 0 1 : Not used
1 1 0 : Not used
1 1 1 : Not used
0
0
6
7
Endpoint index bit
(EPINDEX)
00
00
0
0
Nothing is arranged for these bits. Fix these bits to “0”.
0
0
3
4
5
(6)
USB endpoint index register
Endpoint index bits
These bits specify the accessible endpoint.
These bits serve as an index of the following registers;
- USB endpoint x (x=0 to 2) IN control register
- USB endpoint x (x=1 to 2) OUT control register
- USB endpoint x (x=0 to 2) IN max. packet size register
- USB endpoint x (x=0 to 2) OUT max. packet size register
- USB endpoint x (x=0 to 2) OUT write count register
- USB endpoint FIFO mode register (only endpoint 1 and endpoint 2)
Figure 2.6.13 shows the structure of the USB endpoint index register.



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