Rev. 3.0, 10/02, page xvi of lviii
Section
Page
Description
15.3.1 USB Endpoint
Information Registers 00_0
to 22_4 (UEPIR00_0 to
UEPIR22_4)
•
UEPIRnn_1
Replaced
UEPIRnn_1
Bit Bit Name Initial Value R/W Description
7 to
5
D31 –D29 — R/W Alternate number to which endpoint belongs (3-bit
configuration, settable values: 0 to 7)
000: Control transfer
001 to 111: Other than Control transfer
4
3
D28
D27
—
—
R/W
R/W
Endpoint transfer type (2-bit configuration)
00: Control(UEPIR00)
01: Isochronous(UEPIR04 to UEPIR19)
10: Bulk(UEPIR02,UEPIR03,UEPIR20,UEPIR21)
11: Interrupt(UEPIR01,UEPIR22)
2D26 — R/W Endpoint transfer direction (1-bit configuration)
0: out (UEPIR00,03,05,07,09,11,13,15,17,19,21)
1: in (UEPIR01,02,04,06,08,10,12,14,16,18,20,22)
1
0
D25
D24
—
—
R/W
R/W
Endpoint maximum packet size (D25 to D16 10-bit
configuration)
Control transfer = 64 only (UEPIR00)
Interrupt transfer = 0 to 64 (UEPIR01, UEPIR22)
Bulk transfer = 0 or 64 (UEPIR02, UEPIR03,
UEPIR20, UEPIR21)
Isochronous transfer = 0 to 128 (UEPIR04 to
UEPIR19)
•
UEPIRnn_2
440
UEPIRnn_2
Bit Bit Name Initial Value R/W Description
7 to
0
D23 –D16 — R/W Endpoint maximum packet size (D25 to D16 10-bit
configuration)
Control transfer = 64 only (UEPIR00)Interrupt
transfer = 0 to 64 (UEPIR01, UEPIR22)
Bulk transfer = 0 or 64 (UEPIR02,UEPIR03,
UEPIR20, UEPIR21)
Isochronous transfer = 0 to 128 (UEPIR04 to
UEPIR19)
• UEPIRnn_3 441
Replaced
UEPIRnn_3
Bit Bit Name Initial Value R/W Description
7 to
0
D15 –D8 — R/W Endpoint internal address (D15 to D0 16-bit
configuration)
Set UEPIR00_3, UEPIR00_4 = H'0000
Set UEPIR01_3, UEPIR01_4 = H'0001
:
Set UEPIR21_3, UEPIR21_4 = H'0015
Set UEPIR22_3, UEPIR22_4 = H'0016
• UEPIRnn_4
UEPIRnn_4
Bit Bit Name Initial Value R/W Description
7 to
0
D7 –D0 — R/W Endpoint internal address (D15 to D0 16-bit
configuration)
Set UEPIR00_3, UEPIR00_4 = H'0000
Set UEPIR01_3, UEPIR01_4 = H'0001
:
Set UEPIR21_3, UEPIR21_4 = H'0015
Set UEPIR22_3, UEPIR22_4 = H'0016
Table 15.2 EPINFO Data
Settings
444
Note amended
Notes:*5
Maximum packet size of Isochronous transfer
must be from 0 to 128.