Samsung YP-P10 User Manual download pdf (Page 372)

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101

S3C2440A RISC MICROPROCESSOR USB DEVICE

13-17

END POINT OUT WRITE COUNT REGISTER (OUT_FIFO_CNT1_REG/OUT_FIFO_CNT2_REG)

These registers maintain the number of bytes in the packet as the number is unloaded by the MCU.

OUT_FIFO_CNT1_REG 0x52000198(L)

0x5200019B(B)

(byte)

End point out write count register1 0x00

OUT_FIFO_CNT1_REG Bit MCU USB Description Initial State

OUT_CNT_LOW [7:0] R W Lower byte of write count 0x00

OUT_FIFO_CNT2_REG 0x5200019C(L)

0x5200019F(B)

(byte)

End point out write count register2 0x00

OUT_FIFO_CNT2_REG Bit MCU USB Description Initial State

OUT_CNT_HIGH [7:0] R W Higher byte of write count.

The OUT_CNT_HIGH may be always 0

normally.

0x00

END POINT FIFO REGISTER (EPN_FIFO_REG)

The EPn_FIFO_REG enables the MCU to access to the EPn FIFO.

EP0_FIFO 0x520001C0(L)

0x520001C3 (B)

R/W

(byte)

End point0 FIFO register 0xXX

EP1_FIFO 0x520001C4(L)

0x520001C7(B)

R/W

(byte)

End point1 FIFO register 0xXX

EP2_FIFO 0x520001C8(L)

0x520001CB(B)

R/W

(byte)

End point2 FIFO register 0xXX

EP3_FIFO 0x520001CC(L)

0x520001CF(B)

R/W

(byte)

End point3 FIFO register 0xXX

EP4_FIFO 0x520001D0(L)

0x520001D3(B)

R/W

(byte)

End point4 FIFO register 0xXX

EPn_FIFO Bit MCU USB Description Initial State

FIFO_DATA [7:0] R/W R/W FIFO data value 0xXX

1 2 ... 367 368 369 370 371 372 373 374 375 376 377 ... 595 596

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Samsung YP-P10 User Manual Page 372

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