H8SXSLASH1663 datasheet(832/1158 Pages) RENESAS

832 / 1158 page

Section 16 USB Function Module (USB)

Rev.1.00 Jun. 07, 2006 Page 780 of 1102

REJ09B0294-0100

• EPIR04

Bit

Bit Name

Initial

Value

R/W

Description

7 to 0

D7 to D0

Undefined

Endpoint FIFO Number

[Possible setting range]

0 to 3

The endpoint number is the endpoint number the USB host uses. The endpoint FIFO number

corresponds to the endpoint number described in this manual. Thus data transfer between the USB

host and the endpoint FIFO can be enabled by putting the endpoint number and the endpoint FIFO

number in one-to-one correspondence. Note that the setting value is subject to a limitation

described below.

Since each endpoint FIFO number is optimized by the exclusive software that corresponds to the

transfer system, direction, and the maximum packet size, make sure to set the endpoint FIFO

number to the data described in table 16.2.

1. The endpoint FIFO number 1 cannot designate other than the maximum packed size of 8 bytes,

control transfer method, and out transfer direction.

2. The endpoint number 0 and the endpoint FIFO number must have one-on one relationship.

3. The maximum packet size for the endpoint FIFO number 0 is 8 bytes only.

4. The endpoint FIFO number 0 can specify only the maximum packet size and the data for the

rest should be all 0.

5. The maximum packet size for the endpoint FIFO numbers 1 and 2 is limited to 64 bytes.

6. The maximum packet size for the endpoint FIFO numbers 3 is limited to 8 bytes.

7. The maximum number of endpoint information setting is ten.

8. Up to ten endpoint information setting should be made.

9. Write 0 to the endpoints not in use.

Table 16.2 shows the example of limitations for the maximum packet size, the transfer method,

and the transfer direction.

Table 16.2

Example of Limitations for Setting Values

Endpoint FIFO Number

Maximum Packet Size

Transfer Method

Transfer Direction

8 bytes

Control



64 bytes

Bulk

Out

64 bytes

Bulk

8 bytes

Interrupt

H8SX/1663 数据表(PDF) 832 Page - Renesas Technology Corp

H8SX/1663 数据表(HTML) 832 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载