M66596FP datasheet(46/131 Pages) RENESAS

46 / 131 page

M66596FP/WG

rev .1.00

2006.3.14

page 46 of 127

Pipe buffer setting register [PIPEBUF]

<Address: 68H>

BUFSIZE

BUFNMB

Bit

Name

Function

S/W

H/W

Note

Nothing is placed here. This should be fixed at “0”.

14-10 BUFSIZE

Buffer Size

Specifies the size of the pertinent pipe.

(from 0: 64 bytes to 0x1F: 2KB)

R/W

3.4.1

*6)

9-7 Nothing is placed here. These should be fixed at “0”.

6-0 BUFNMB

Buffer Number

Specifies the buffer number for the pertinent

pipe.(From 0x4 to 0x5F)

R/W

3.4.1

*7)

<<Notes>>

*6) The valid value for the BUFSIZE bit depends on the selected PIPE by the PIPESEL bit of the PIPESEL register.

When using PIPE1-5, this bit can select “BUFSIZE=00-1F”

When using PIPE6-7, writing to this bit is invalid.

*7) The BUFNMB bit can be set to match the user system when PIPE1-5 are selected.

"BUFNMB=0-3"is used exclusively for the DCP."BUFNMB=4-5"is allocated to PIPE6-7.

When using PIPE6, writing to this bit is invalid, and "BUFNMB=4” is always used for reading.

When using PIPE7, writing to this bit is invalid, and “BUFNMB=5” is always used for reading.

Pipe maximum packet size register [PIPEMAXP]

<Address: 6AH>

DEVSEL

MXPS

0(1)*9)

0(1)

Bit

Name

Function

S/W

H/W

Note

DEVSEL

Device select

This specifies the device adress for the DCP in

the Host mode.

00 : Address 0

01 : Address 1

02 : Address 2

03 : Address 3

R/W

*8)

Nothing is placed here. These should be fixed at “0”.

10-0 MXPS

Maximum Packet Size

Specifies the maximum packet size for the

pertinent pipe.

R/W

3.3

*9),

*10)

<<Note>>

*8) This bit should be set “00” in the peripheral mode.

*9) The MXPS bit should be set to"0x00”, or the setting defined by the USB specification should be used.

*10) The default value of MXPS bit is "0x0" when "PIPSEL=0", and "0x40" when select "PIPESEL>0".

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