Renesas M16C Series User Manual page 208

M30245 Group
USB endpoint x(x=1 to 4) IN MAXP register
This register indicates endpoint x(x=1 to 4) IN maximum packet size. The default value is 0 byte.
When the endpoint is initialized due to any reason such as that the request for setting the endpoint
(SET_DESCRIPTOR, SET_CONFIGURATION, SET_INTERFACE, etc.) is received from the host
CPU, change the endpoint x IN maximum packet size value by writing in this register. Set a packet
size value specified for every transfer type to be used.
The configuration of USB endpoint x(x=1 to 4) IN MAXP register is shown in Figure 2.8.47.
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USB Endpoint x IN MAXP register
(b15)
b7
0 0 0 0 0 0
Figure 2.8.47. USB endpoint x(x=1 to 4) IN MAXP register
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
(b8)
b0 b7 b0
page 199 of 354
Address
Symbol
02A0
EPxIMP ( x = 1 - 4)
16
02AC
Bit Symbol Bit Name
Endpoint x IN
IMAXP9-0
maximum packet size
Reserved
2. USB function
When reset
, 02A6 ,
0000
16
16
, 02B2
16 16
Function
Set the endpoint x IN
maximum packet size
Must always be set to "0"
R W
O O
O O