Atmel AT85DVK-07 Especificaciones descargar pdf (Pagina 120)

120

AT85C51SND3Bx

7632A–MP3–03/06

Reset Value = 0000 0000b

Table 122. UECFG0X Register

UECFG0X (1.CCh) – USB Endpoint Configuration 1 Register

7 6 5 4 3 2 1 0

EPTYPE1:0 - - ISOSW AUTOSW NYETDIS EPDIR

Bit

Number

Bit

Mnemonic

Description

7-6 EPTYPE1:0

Endpoint Type Bits

Set this bit according to the endpoint configuration:

00b: Control10b: Bulk

01b: Isochronous11b: Interrupt

5-4 -

Reserved

The value read from these bits is always 0. Do not set these bits.

3 ISOSW

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.

2 AUTOSW

Automatic Switch Bit

Set to automatically switch bank when it is ready.

Clear to disable the automatic bank switching.

See Section “OUT Endpoint Management” and Section “IN Endpoint

Management” for more details.

1 NYETDIS

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.

0 EPDIR

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.

Table 123. UECFG1X Register

UECFG1X (1.CDh) – USB Endpoint Configuration 0 Register

7 6 5 4 3 2 1 0

- EPSIZE2 EPSIZE1 EPSIZE0 EPBK1 EPBK ALLOC -

Bit

Number

Bit

Mnemonic

Description

7 -

Reserved

The value read from these bits is always 0. Do not set these bits.

6-4 EPSIZE2:0

Endpoint Size Bits

Set this bit according to the endpoint size:

000b: 8 bytes100b: 128 bytes

001b: 16 bytes101b: 256 bytes

010b: 32 bytes110b: 512 bytes

011b: 64 bytes111b: Reserved. Do not use this configuration.

1 2 ... 115 116 117 118 119 120 121 122 123 124 125 ... 262 263

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