Intel PXA26X User Manual Page 457

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Intel® PXA26x Processor Family Developer’s Manual 12-47
Universal Serial Bus Device Controller
12.6.16 UDC Data Register x (UDDRx), Where x is 1, 6, or 11
Endpoint(x) is a double-buffered bulk IN endpoint that is 64 bytes deep. Data can be loaded via
DMA or direct core writes. Because it is double buffered, up to two packets of data may be loaded
for transmission.
Table 12-26. UDC Endpoint 0 Data Register
0h 4060 0080 UDDR0 Read/Write
Bit
31:8 7 6 5 4 3 2 1 0
Reserved Bottom of Endpoint 0 FIFO (for Reads)
Reset
X 0 0 0 0 0 0 0 0
31:8 7 6 5 4 3 2 1 0
Reserved Top of Endpoint 0 FIFO (for Writes)
Reset
X 0 0 0 0 0 0 0 0
Bits Name Description
7:0 DATA
Top/bottom of endpoint 0 FIFO data
Read – Bottom of endpoint 0 FIFO data.
Write – Top of endpoint 0 FIFO data.
31:8 Reserved for future use
Table 12-27. UDC Endpoint x Data Register, Where x is 1, 6, or 11
0h 4060 0100 UDDR1 Write
0h 4060 0600 UDDR6 Write
0h 4060 0B00 UDDR11 Write
Bit
31:8 7 6 5 4 3 2 1 0
Reserved 8-Bit Data
Rese
t
X 0 0 0 0 0 0 0 0
Bits Name Description
7:0 DATA Top of endpoint data currently being loaded
31:8 Reserved for future use
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