AT89C5131-PLTIL ATMEL Corporation, AT89C5131-PLTIL Datasheet - Page 138
AT89C5131-PLTIL
Manufacturer Part Number
AT89C5131-PLTIL
Description
8-bit Flash Microcontroller with Full Speed USB Device
Manufacturer
ATMEL Corporation
Datasheet
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AT89C5131
Table 95. UEPCONX Register
UEPCONX (S:D4h)
USB Endpoint X Control Register
Note:
Reset Value = 80h when UEPNUM = 0
Reset Value = 00h otherwise
Bit Number
EPEN
1-0
7
7
6
5
4
3
2
1. (X = EPNUM set in UEPNUM Register UEPNUM (S:C7h) USB Endpoint Number)
EPTYPE[1:0]
Mnemonic
EPDIR
EPEN
DTGL
6
Bit
-
-
-
-
Description
Endpoint Enable
Set this bit to enable the endpoint according to the device configuration.
Endpoint 0 will always be enabled after a hardware or USB bus reset and
participate in the device configuration.
Clear this bit to disable the endpoint according to the device configuration.
Reserved
The value read from this bit is always 0. Do not set this bit.
Reserved
The value read from this bit is always 0. Do not set this bit.
Reserved
The value read from this bit is always 0. Do not set this bit.
Data Toggle (Read-only)
This bit is set by hardware when a valid DATA0 packet is received and
accepted.
This bit is cleared by hardware when a valid DATA1 packet is received and
accepted.
Endpoint Direction
Set this bit to configure IN direction for Bulk, Interrupt and Isochronous
endpoints.
Clear this bit to configure OUT direction for Bulk, Interrupt and Isochronous
endpoints.
This bit has no effect for Control endpoints.
Endpoint Type
Set this field according to the endpoint configuration (Endpoint 0 will always be
configured as control):
00Control endpoint
01Isochronous endpoint
10Bulk endpoint
11Interrupt endpoint
5
-
4
-
DTGL
3
EPDIR
2
EPTYPE1
1
4136B–USB–09/03
EPTYPE0
0
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