at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 120

• Manufacturer Part Number: at85c51snd3
• Description: At85c51snd3 Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
• Manufacturer: ATMEL Corporation

120
AT85C51SND3B
Reset Value = 0000 0000b
Table 122. UECFG0X Register
UECFG0X (1.CCh) – USB Endpoint Configuration 0 Register
Reset Value = 0000 0000b
Table 123. UECFG1X Register
UECFG1X (1.CDh) – USB Endpoint Configuration 1 Register
Number
Number
7-6
5-4
Bit
Bit
0
7
3
2
1
0
7
-
EPTYPE1:0
EPTYPE1:0
Mnemonic Description
Mnemonic Description
AUTOSW
NYETDIS
EPSIZE2
ISOSW
EPDIR
EPEN
Bit
Bit
6
6
-
Endpoint Enable Bit
Set to enable the endpoint according to the device configuration. Endpoint 0 shall
always be enabled after a hardware or USB reset and participate in the device
configuration.
Clear this bit to disable the endpoint. See Section “Endpoint Activation” for more
details.
Endpoint Type Bits
Set this bit according to the endpoint configuration:
00b: Control
01b: Isochronous
Reserved
The value read from these bits is always 0. Do not set these bits.
Isochronous Switch Bit
Set to automatically switch banks on each SOF.
Clear to disable the automatic bank switching on each SOF.
See Section “Isochronous Mode” for more details.
Automatic Switch Bit
Set to automatically switch bank when it is ready.
Clear to disable the automatic bank switching.
See
Management” for more details.
Not Yet Disable Bit
Set to automatically send a “ACK” handshake instead of “Not Yet” handshake.
Thus, the host will not have to “ping” for the next packet.
Clear to automatically send “Not Yet” handshake. Thus, the host will have to
“ping” for the next packet.
Endpoint Direction Bit
Set to configure an IN direction for bulk, interrupt or isochronous endpoints.
Clear to configure an OUT direction for bulk, interrupt, isochronous or control
endpoints.
EPSIZE1
5
5
-
Section “OUT
EPSIZE0
4
4
-
10b: Bulk
11b: Interrupt
Endpoint
ISOSW
EPBK1
3
3
Management”
AUTOSW
EPBK
2
2
and
NYETDIS
ALLOC
Section “IN
1
1
7632D–MP3–01/07
EPDIR
Endpoint
0
0
-