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
1019
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
40.7
USB Device Port (UDP) User Interface
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.
Notes: 1. Reset values are not defined for UDP_ISR or UDP_FDRx.
2. See Warning above the
on this page.
Table 40-6.
Register Mapping
Offset
Register
Name
Access
Reset
0x000
Frame Number Register
UDP_FRM_NUM
Read-only
0x0000_0000
0x004
Global State Register
UDP_GLB_STAT
Read/Write
0x0000_0010
0x008
Function Address Register
UDP_FADDR
Read/Write
0x0000_0100
0x00C
Reserved
–
–
–
0x010
Interrupt Enable Register
UDP_IER
Write-only
0x014
Interrupt Disable Register
UDP_IDR
Write-only
0x018
Interrupt Mask Register
UDP_IMR
Read-only
0x0000_1200
0x01C
Interrupt Status Register
UDP_ISR
Read-only
–
0x020
Interrupt Clear Register
UDP_ICR
Write-only
0x024
Reserved
–
–
–
0x028
Reset Endpoint Register
UDP_RST_EP
Read/Write
0x0000_0000
0x02C
Reserved
–
–
–
0x030
Endpoint Control and Status Register 0
UDP_CSR0
Read/Write
0x0000_0000
...
...
...
...
...
0x030 + 0x4 * 7
Endpoint Control and Status Register 7
UDP_CSR7
Read/Write
0x0000_0000
0x050
Endpoint FIFO Data Register 0
UDP_FDR0
Read/Write
–
...
...
...
...
...
0x050 + 0x4 * 7
Endpoint FIFO Data Register 7
UDP_FDR7
Read/Write
–
0x070
Reserved
–
–
–
0x074
Transceiver Control Register
UDP_TXVC
Read/Write
0x0000_0100
0x078–0xFC
Reserved
–
–
–