AT83C5135 Atmel Corporation, AT83C5135 Datasheet - Page 126
AT83C5135
Manufacturer Part Number
AT83C5135
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT83C5134.pdf
(166 pages)
Specifications of AT83C5135
Max. Operating Frequency
32 MHz
Cpu
8051-12C
Max I/o Pins
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
1
Sram (kbytes)
1.25
Eeprom (bytes)
512
Operating Voltage (vcc)
2.7 to 3.6
Timers
4
Mask Rom (kbytes)
16
Watchdog
Yes
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Table 21-10. UEPDATX Register
Table 21-11. UBYCTLX Register
Table 21-12. UBYCTHX Register
126
Bit Number
Bit Number
Bit Number
BYCT7
FDAT7
7 - 0
7 - 0
7-2
2-0
7
7
7
-
AT83C5134/35/36
UEPDATX (S:CFh)
USB FIFO Data Endpoint X
UBYCTLX (S:E2h)
USB Byte Count Low Register X
UBYCTHX (S:E3h)
USB Byte Count High Register X
Bit Mnemonic
Bit Mnemonic
FDAT
BYCT[7:0]
Bit Mnemonic
BYCT6
FDAT6
BYCT[10:8]
6
6
6
-
[7:0]
-
Reset Value = XXh
Reset Value = 00h
Reset Value = 00h
Description
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).
Description
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 21-11 on page 126). This byte count is equal to the
number of data bytes received after the Data PID.
Description
Reserved
The value read from these bits is always 0. Do not set these bits.
Byte Count MSB
Most Significant Byte of the byte count of a received data packet. The Least significant part is provided by
UBYCTLX Register UBYCTLX (S:E2h) USB Byte Count Low Register X (X = EPNUM set in UEPNUM
Register UEPNUM (S:C7h) USB Endpoint Number) (see Figure 21-11 on page 126).
BYCT5
FDAT5
5
5
5
-
(X = EPNUM set in UEPNUM Register UEPNUM (S:C7h) USB Endpoint Number)
(X = EPNUM set in UEPNUM Register UEPNUM (S:C7h) USB Endpoint Number)
(X = EPNUM set in UEPNUM Register UEPNUM (S:C7h) USB Endpoint Number)
BYCT4
FDAT4
4
4
4
-
BYCT3
FDAT3
3
3
3
-
BYCT2
FDAT2
2
2
2
-
BYCT1
BYCT9
FDAT1
1
1
1
7683C–USB–11/07
BYCT0
BYCT8
FDAT0
0
0
0
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