upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 318
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upd78f0730
Manufacturer Part Number
upd78f0730
Description
8-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0730.pdf
(518 pages)
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318
(33) UF0 active alternative setting register (UF0AAS)
Remark
UF0AAS
Bit position
This register specifies a link between the Interface number and Alternative Setting.
This register can be read or written in 8-bit units.
USBF of the
defined) and a two-series Alternative Setting (Alternative Setting 0 and 1 can be defined) for one Interface.
For example, when the UF0AIFN register is set to 82H and the UF0AAS register is set to 15H, Interfaces 0, 1,
2, and 3 are valid. Interfaces 0 and 2 support only Alternative Setting 0. Interface 1 supports Alternative
Setting 0 and 1, and Interface 3 supports Alternative Setting 0, 1, 2, 3, and 4. With this setting, requests
GET_INTERFACE wIndex = 0/1/2/3, SET_INTERFACE wValue = 0 & wIndex = 0/2, SET_INTERFACE wValue
= 0/1 & wIndex = 1, and SET_INTERFACE wValue = 0/1/2/3/4 & wIndex = 3 are automatically responded to,
and a STALL response is made to the other GET/SET_INTERFACE requests.
6, 5,
7, 3
2, 1
4, 0
n = 2, 5
ALT2
7
ALTn
IFALn1,
IFALn0
ALTnEN
µ
Bit name
PD78F0730 can set a five-series Alternative Setting (Alternate Setting 0, 1, 2, 3, and 4 can be
IFAL21
6
CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
IFAL20
These bits specify whether an n-series Alternative Setting is linked with Interface 0.
When these bits are set to 1, the setting of the IFALn1 and IFALn0 bits is invalid.
These bits specify the Interface number to be linked with the n-series Alternative Setting.
If the linked Interface number is outside the range specified by the UF0AIFN register, the
n-series Alternative Setting is invalid (ALTnEN bit = 0).
Do not link a five-series Alternative Setting and a two-series Alternative Setting with the
same Interface number.
These bits validate the n-series Alternative Setting. Unless these bits are set to 1, the
setting of the ALTn, IFALn1, and IFALn0 bits is invalid.
5
1: Link n-series Alternative Setting with Interface 0.
0: Do not link n-series Alternative Setting with Interface 0 (default value).
1: Validate the n-series Alternative Setting.
0: Do not validate the n-series Alternative Setting (default value).
IFALn1
1
1
0
0
Preliminary User’s Manual U19014EJ1V0UD
ALT2EN
4
IFALn0
1
0
1
0
ALT5
3
Links Interface 4.
Links Interface 3.
Links Interface 2.
Links Interface 1.
IFAL51
2
Function
IFAL50
Interface number to be linked
1
ALT5EN
0
Address
FF71H
After reset
00H
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