Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 21 USB FUNCTION CONTROLLER (USBF)
R01UH0042EJ0500 Rev.5.00 Page 1126 of 1513
Aug 12, 2011
(41) UF0 endpoint 4 interface mapping register (UF0E4IM)
This register specifies for which Interface and Alternative Setting Endpoint4 is valid.
This register can be read or written in 8-bit units.
The setting of this register and the Alternative Setting selected by the SET_INTERFACE request indicate whether
Endpoint4 is currently valid, and the hardware determines how the
GET_STATUS/CLEAR_FEATURE/SET_FEATURE Endpoint4 request and the OUT transaction to Endpoint4 are
responded to, and whether the related bits are valid or invalid.
E4EN2UF0E4IM E4EN1
5
E4EN0 E42AL1
3
E45AL4
2
E45AL3
1
E45AL2 E45AL1
Address
0020008CH
After reset
00H
0467
Bit position Bit name Function
These bits set a link between the Interface of Endpoint4 and the two-/five-series
Alternative Setting. The endpoint is linked with Alternative Setting 0. The endpoint linked
with Alternative Setting 0 cannot be excluded from Alternative Setting 1 to 4.
E4EN2 E4EN1 E4EN0 Link status
1 1 1
1 1 0
Not linked with Interface
1 0 1 Linked with Interface 4 and Alternative Setting 0
1 0 0 Linked with Interface 3 and Alternative Setting 0
0 1 1 Linked with Interface 2 and Alternative Setting 0
0 1 0 Linked with Interface 1 and Alternative Setting 0
0 0 1 Linked with Interface 0 and Alternative Setting 0
0 0 0 Not linked with Interface (default value)
7 to 5
E4EN2 to
E4EN0
When these bits are set to 110 or 111, they are invalid even if the E42AL1 bit is cleared to
0.
If the endpoint is linked, setting of the CONF bit of the UF0MODS register to 1 indicates
that Endpoint4 is valid.
4 E42AL1
This bit validates Endpoint4 when the two-series Alternative Setting and the Alternative
Setting of the linked Interface are set to 1.
1: Validate the endpoint when Alternative Setting 1 is set with CONF bit = 1.
0: Do not validate the endpoint even when Alternative Setting 1 is set with CONF bit =
1 (default value).
This bit is valid when the E45AL4 to E45AL1 bits are 0000.
3 to 0 E45ALn
These bits validate Endpoint4 when the five-series Alternative Setting and the Alternative
Setting of the linked Interface are set to n.
1: Validate the endpoint when Alternative Setting n is set with CONF bit = 1.
0: Do not validate the endpoint even when Alternative Setting n is set with CONF bit =
1 (default value).
Remark n = 1 to 4