AT83C5136-RDTUL datasheet(128/171 Pages) ATMEL

128 / 171 page

128

AT83C5134/35/36

7683B–USB–03/07

Table 91. UEPDATX Register

UEPDATX (S:CFh)

USB FIFO Data Endpoint X (X = EPNUM set in UEPNUM Register UEPNUM (S:C7h)

USB Endpoint Number)

Reset Value = XXh

Table 92. UBYCTLX Register

UBYCTLX (S:E2h)

USB Byte Count Low Register X (X = EPNUM set in UEPNUM Register UEPNUM

(S:C7h) USB Endpoint Number)

Reset Value = 00h

FDAT7

FDAT6

FDAT5

FDAT4

FDAT3

FDAT2

FDAT1

FDAT0

Bit Number

Bit

Mnemonic Description

7 - 0

FDAT[7:0]

Endpoint X FIFO data

Data byte to be written to FIFO or data byte to be read from the FIFO, for the

Endpoint X (see EPNUM).

BYCT7

BYCT6

BYCT5

BYCT4

BYCT3

BYCT2

BYCT1

BYCT0

Bit Number

Bit

Mnemonic Description

7 - 0

BYCT[7:0]

Byte Count LSB

Least Significant Byte of the byte count of a received data packet. The most

significant part is provided by the UBYCTHX Register UBYCTHX (S:E3h) USB

Byte Count High Register X (X = EPNUM set in UEPNUM Register UEPNUM

(S:C7h) USB Endpoint Number) (see Figure 92 on page 128). This byte count is

equal to the number of data bytes received after the Data PID.

AT83C5136-RDTUL 数据表(PDF) 128 Page - ATMEL Corporation

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