Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
1043
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
40.7.13 UDP Transceiver Control Register
Name:
UDP_TXVC
Address:
0x40034074
Access:
Read/Write
WARNING:
The UDP peripheral clock in the Power Management Controller (PMC) must be enabled before any read/write
operations to the UDP registers including the UDP_TXVC register.
TXVDIS: Transceiver Disable
When UDP is disabled, power consumption can be reduced significantly by disabling the embedded transceiver. This can
be done by setting TXVDIS field.
To enable the transceiver, TXVDIS must be cleared.
To enable the transceiver, TXVDIS must be cleared.
PUON: Pull-up On
0: The 1.5KΩ integrated pull-up on DDP is disconnected.
1: The 1.5 KΩ integrated pull-up on DDP is connected.
NOTE
1: The 1.5 KΩ integrated pull-up on DDP is connected.
NOTE
: If the USB pull-up is not connected on DDP, the user should not write in any UDP register other than the
UDP_TXVC register. This is because if DDP and DDM are floating at 0, or pulled down, then SE0 is received by the device
with the consequence of a USB Reset.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
PUON
TXVDIS
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
–