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AT76C551 Datasheet(PDF) 50 Page - ATMEL Corporation |
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AT76C551 Datasheet(HTML) 50 Page - ATMEL Corporation |
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50 / 77 page  50 AT76C551 1612D–08/01 USB Registers – USB Wrapper Registers The following registers are found in the USB wrapper block and control the overall performance of the USB hardware block. They provide status information, allow interrupt masking and DMA programming for fast data transfers between the DPRAM and the endpoint buffers.l Table 4. Summary of the USB Cell Specific Registers Register Address Default Function SLP_MD_EN 5000000h 00000000 Sleep mode control GLB_IRQ_MSK 5000004h 00000000 Global Interrupt Master register IRQ_STAT 5000008h 00000000 Master Interrupt Status RES_STAT 500000Ch 00000000 Reset Status DEF_EP_PAIRS 5000010h 00000000 Endpoint Pairs Definition USB_RDMA_LEN 500001Ch 00000000 Receive DMA packet length requested USB_DMA_FADD 5000020h 00000000 DMA target Endpoint address USB_RDMA_LENR 5000024h 00000000 Receive DMA packet length transferred USB_RDMA_EN 5000028h 00000000 Receive DMA Enable USB_DMA_RADD 5000040h 00000000 RAM target address for DMA cycles USB_TDMA_LEN 5000044h 00000000 Transmit DMA packet length requested USB_TDMA_LENR 5000048h 00000000 Transmit DMA packet length transferred USB_TDMA_EN 500004Ch 00000000 Transmit DMA Enable FRM_NUM_H 50003F4h xxxxx000 Frame Number High Register FRM_NUM_L 50003F0h xxxxx000 Frame Number Low Register GLB_STATE 50003ECh xxxxx000 Global State Register SPRSR 50003E8h xxxxx000 Suspend/Resume Register SPRSIE 50003E4h xxxxxx00 Suspend/Resume Interrupt Enable Register UISR 50003DCh 00000000 USB Interrupt Status Register UIAR 50003D4h xxxxx000 USB Interrupt Acknowledge Register UIER 50003CCh xxxxx000 USB Interrupt Enable Register FADDR 50003C8h 00000000 Function Address Register ENDPPGPG 50003C4h 00000000 Function Endpoint Ping-pong Register ECR0 50003BCh 0xxx0000 Endpoint0 Control Register ECR1 50003B8h 0xxx0000 Endpoint1 Control Register ECR2 50003B4h 0xxx0000 Endpoint2 Control Register ECR3 50003B0h 0xxx0000 Endpoint3 Control Register ECR4 50003ACh 0xxx0000 Endpoint4 Control Register ECR5 50003A8h 0xxx0000 Endpoint5 Control Register ECR6 50003A4h 0xxx0000 Endpoint6 Control Register CSR0 500037Ch x1110000 Endpoint0 Control and Status Register CSR1 5000378h x1110000 Endpoint1 Control and Status Register |
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