C8051F320DK Silicon Laboratories Inc, C8051F320DK Datasheet - Page 151

• Manufacturer Part Number: C8051F320DK
• Description: DEV KIT FOR C8051F320/F321
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F320DK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F320/F321
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F320
• Silicon Family Name: C8051F32x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Silicon Laboratories C8051F320, C8051F321
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1260

Bit7:
Bits6–5: Unused. Read = 00b. Write = don’t care.
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
ISOUD
R/W
Bit7
ISOUD: ISO Update
This bit affects all IN Isochronous endpoints.
0: When software writes INPRDY = ‘1’, USB0 will send the packet when the next IN token is
received.
1: When software writes INPRDY = ‘1’, USB0 will wait for a SOF token before sending the
packet. If an IN token is received before a SOF token, USB0 will send a zero-length data
packet.
USBINH: USB0 Inhibit
This bit is set to ‘1’ following a power-on reset (POR) or an asynchronous USB0 reset (see
Bit3: RESET). Software should clear this bit after all USB0 and transceiver initialization is
complete. Software cannot set this bit to ‘1’.
0: USB0 enabled.
1: USB0 inhibited. All USB traffic is ignored.
USBRST: Reset Detect
Writing ‘1’ to this bit forces an asynchronous USB0 reset. Reading this bit provides bus reset
status information.
Read:
0: Reset signaling is not present on the bus.
1: Reset signaling detected on the bus.
RESUME: Force Resume
Software can force resume signaling on the bus to wake USB0 from suspend mode. Writing
a ‘1’ to this bit while in Suspend mode (SUSMD = ‘1’) forces USB0 to generate Resume sig-
naling on the bus (a remote Wakeup event). Software should write RESUME = ‘0’ after
10 ms to15 ms to end the Resume signaling. An interrupt is generated, and hardware clears
SUSMD, when software writes RESUME = ‘0’.
SUSMD: Suspend Mode
Set to ‘1’ by hardware when USB0 enters suspend mode. Cleared by hardware when soft-
ware writes RESUME = ‘0’ (following a remote wakeup) or reads the CMINT register after
detection of Resume signaling on the bus.
0: USB0 not in suspend mode.
1: USB0 in suspend mode.
SUSEN: Suspend Detection Enable
0: Suspend detection disabled. USB0 will ignore suspend signaling on the bus.
1: Suspend detection enabled. USB0 will enter suspend mode if it detects suspend signaling
on the bus.
R/W
Bit6
-
USB Register Definition 15.8. POWER: USB0 Power
R/W
Bit5
-
USBINH
R/W
Bit4
USBRST RESUME
Rev. 1.4
R/W
Bit3
R/W
Bit2
SUSMD
Bit1
R
C8051F320/1
SUSEN
R/W
Bit0
USB Address:
00010000
Reset Value
0x01
151