C8051F326DK Silicon Laboratories Inc, C8051F326DK Datasheet - Page 92
C8051F326DK
Manufacturer Part Number
C8051F326DK
Description
KIT DEV FOR C8051F326/7
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F326DK
Contents
Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
Processor To Be Evaluated
C8051F326/F327
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F326
Silicon Family Name
C8051F32x
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Silicon Laboratories C8051F326, C8051F327
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1306
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C8051F326/7
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Bits7–4: Unused. Read = 0000b. Write = don’t care.
Bits3–0: EPSEL: Endpoint Select
R/W
Bit7
Bit7
—
R
This SFR is used to indirectly read and write USB0 registers.
Write Procedure:
1. Poll for BUSY (USB0ADR.7) => ‘0’.
2. Load the target USB0 register address into the USBADDR bits in register USB0ADR.
3. Write data to USB0DAT.
4. Repeat (Step 2 may be skipped when writing to the same USB0 register).
Read Procedure:
1. Poll for BUSY (USB0ADR.7) => ‘0’.
2. Load the target USB0 register address into the USBADDR bits in register USB0ADR.
3. Write ‘1’ to the BUSY bit in register USB0ADR (steps 2 and 3 can be performed in the
4. Poll for BUSY (USB0ADR.7) => ‘0’.
5. Read data from USB0DAT.
6. Repeat from Step 2 (Step 2 may be skipped when reading the same USB0 register; Step 3
These bits select which endpoint is targeted when indexed USB0 registers are accessed.
same write).
may be skipped when the AUTORD bit (USB0ADR.6) is logic 1).
USB Register Definition 12.4. INDEX: USB0 Endpoint Index
R/W
Bit6
Bit6
—
0x2–0xF
R
INDEX
USB Register Definition 12.3. USB0DAT: USB0 Data
0x0
0x1
R/W
Bit5
Bit5
—
R
Target Endpoint
RESERVED
R/W
Bit4
Bit4
—
R
USB0DAT
0
1
Rev. 1.1
R/W
R/W
Bit3
Bit3
R/W
R/W
Bit2
Bit2
EPSEL
R/W
R/W
Bit1
Bit1
R/W
R/W
Bit0
Bit0
SFR Address:
USB Address:
00000000
00000000
Reset Value
Reset Value
0x0E
0x97
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