Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 21 USB FUNCTION CONTROLLER (USBF)
R01UH0042EJ0500 Rev.5.00 Page 1124 of 1513
Aug 12, 2011
(39) UF0 endpoint 2 interface mapping register (UF0E2IM)
This register specifies for which Interface and Alternative Setting Endpoint2 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
Endpoint2 is currently valid, and the hardware determines how the
GET_STATUS/CLEAR_FEATURE/SET_FEATURE Endpoint2 request and the OUT transaction to Endpoint2 are
responded to, and whether the related bits are valid or invalid.
E2EN2UF0E2IM E2EN1
5
E2EN0 E22AL1
3
E25AL4
2
E25AL3
1
E25AL2 E25AL1
Address
00200088H
After reset
00H
0467
Bit position Bit name Function
These bits set a link between the Interface of Endpoint2 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.
E2EN2 E2EN1 E2EN0 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
E2EN2 to
E2EN0
When these bits are set to 110 or 111, they are invalid even if the E22AL1 bit is cleared to
0.
If the endpoint is linked, setting of the CONF bit of the UF0MODS register to 1 indicates
that Endpoint2 is valid.
4 E22AL1
This bit validates Endpoint2 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 E25AL4 to E25AL1 bits are 0000.
3 to 0 E25ALn
These bits validate Endpoint2 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