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Zynq-7000 AP SoC Technical Reference Manual www.xilinx.com 1833
UG585 (v1.11) September 27, 2016
Appendix B: Register Details
Register (usb) TTCTRL
Register TTCTRL Details
This register contains parameters needed for internal TT operations.
Field Name Bits Type Reset Value Description
ASYBASE_EPBASE 31:11 rw 0x0 Host mode -- Async List Base Address.
Memory address bits [31:11] point to the Queue
Heads (QH) . Refer to [ASYBASE} bit field for
[10:5] address bits.
Device Mode -- Endpoint List Base Address.
Memory address bits [31:11] point to the Queue
Heads (QH). There are unused memory locations.
The stride for the base address is for a 16-endpoint
model using both IN and OUT functions.
However, twelve endpoints are implemented.
ASYBASE 10:5 rw 0x0 Host mode ---- Asynchronous List Base Address.
Memory address bits [10:5].
Device Mode ---- Reserved.
reserved 4:0 ro 0x0 reserved
Name TTCTRL
Relative Address 0x0000015C
Absolute Address usb0: 0xE000215C
usb1: 0xE000315C
Width 32 bits
Access Type mixed
Reset Value 0x00000000
Description TT Control
Field Name Bits Type Reset Value Description
reserved 31 ro 0x0 reserved
TTHA
(HUBADDR)
30:24 rw 0x0 Internal TT Hub Address Representation.
This field is used to match against the Hub
Address field in QH & siTD to determine if the
packet is routed to the internal TT for directly
attached FS/LS devices. If the Hub
Address in the QH or siTD does not match this
address then the packet will be broadcast on the
High Speed ports destined for a downstream
High Speed hub with the
address in the QH/siTD.
reserved 23:2 ro 0x0 reserved