Datasheet

1005
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-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 opera-
tions 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 ”Register Mapping” 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 –
(1)
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 –
(1)
... ... ... ... ...
0x050 + 0x4 * 7 Endpoint FIFO Data Register 7 UDP_FDR7 Read/Write –
(1)
0x070 Reserved – – –
0x074 Transceiver Control Register UDP_TXVC
(2)
Read/Write 0x0000_0100
0x078–0xFC Reserved – – –