C8051T326-GMR Silicon Labs, C8051T326-GMR Datasheet - Page 169
C8051T326-GMR
Manufacturer Part Number
C8051T326-GMR
Description
8-bit Microcontrollers - MCU USB-OTP-16K-QFN28
Manufacturer
Silicon Labs
Datasheet
1.C8051T322-GQR.pdf
(292 pages)
Specifications of C8051T326-GMR
Rohs
yes
Core
8051
Processor Series
C8051
Data Bus Width
8 bit
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USB Register Definition 23.9. FRAMEL: USB0 Frame Number Low
USB Register Address = 0x0C
USB Register Definition 23.10. FRAMEH: USB0 Frame Number High
USB Register Address = 0x0D
23.8. Interrupts
The read-only USB0 interrupt flags are located in the USB registers shown in USB Register
Definition 23.11 through USB Register Definition 23.13. The associated interrupt enable bits are located in
the USB registers shown in USB Register Definition 23.14 through USB Register Definition 23.16. A USB0
interrupt is generated when any of the USB interrupt flags is set to 1. The USB0 interrupt is enabled via the
EIE1 SFR (see Section “17. Interrupts” on page 96).
Important Note: Reading a USB interrupt flag register resets all flags in that register to 0.
Name
Reset
Name
Reset
Bit
7:0 FRMEL[7:0] Frame Number Low Bits.
Bit
7:3
2:0 FRMEH[2:0] Frame Number High Bits.
Type
Type
Bit
Bit
Unused
Name
Name
R
7
0
7
0
This register contains bits 7-0 of the last received frame number.
Unused. Read = 00000b. Write = don’t care.
This register contains bits 10-8 of the last received frame number.
R
6
0
6
0
R
5
0
5
0
C8051T620/621/320/321/322/323
Rev. 1.1
R
4
0
4
0
FRMEL[7:0]
R
Function
Function
R
3
0
3
0
2
0
2
0
FRMEH[2:0]
R
1
0
1
0
0
0
0
0
169
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