C8051F060-TB Silicon Laboratories Inc, C8051F060-TB Datasheet - Page 259
C8051F060-TB
Manufacturer Part Number
C8051F060-TB
Description
BOARD PROTOTYPING W/C8051F060
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F060-TB
Contents
Board
Processor To Be Evaluated
C8051F06x
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F060
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Bit 7:
Bit 6:
Bit 5:
Bit 4:
Bits 3-2: NSSMD1-NSSMD0: Slave Select Mode.
Bit 1:
Bit 0:
SPIF
R/W
Bit7
SPIF: SPI0 Interrupt Flag.
This bit is set to logic 1 by hardware at the end of a data transfer. If interrupts are enabled,
setting this bit causes the CPU to vector to the SPI0 interrupt service routine. This bit is not
automatically cleared by hardware. It must be cleared by software.
WCOL: Write Collision Flag.
This bit is set to logic 1 by hardware (and generates a SPI0 interrupt) to indicate a write to
the SPI0 data register was attempted while a data transfer was in progress. It must be
cleared by software.
MODF: Mode Fault Flag.
This bit is set to logic 1 by hardware (and generates a SPI0 interrupt) when a master mode
collision is detected (NSS is low, MSTEN = 1, and NSSMD[1:0] = 01). This bit is not auto-
matically cleared by hardware. It must be cleared by software.
RXOVRN: Receive Overrun Flag (Slave Mode only).
This bit is set to logic 1 by hardware (and generates a SPI0 interrupt) when the receive buf-
fer still holds unread data from a previous transfer and the last bit of the current transfer is
shifted into the SPI0 shift register. This bit is not automatically cleared by hardware. It must
be cleared by software.
Selects between the following NSS operation modes:
(See
Slave Mode Operation” on page
00: 3-Wire Slave or 3-wire Master Mode. NSS signal is not routed to a port pin.
01: 4-Wire Slave or Multi-Master Mode (Default). NSS is always an input to the device.
1x: 4-Wire Single-Master Mode. NSS signal is mapped as an output from the device and will
assume the value of NSSMD0.
TXBMT: Transmit Buffer Empty.
This bit will be set to logic 0 when new data has been written to the transmit buffer. When
data in the transmit buffer is transferred to the SPI shift register, this bit will be set to logic 1,
indicating that it is safe to write a new byte to the transmit buffer.
SPIEN: SPI0 Enable.
This bit enables/disables the SPI.
0: SPI disabled.
1: SPI enabled.
WCOL
R/W
Bit6
Section “21.2. SPI0 Master Mode Operation” on page 253
MODF
R/W
Bit5
Figure 21.9. SPI0CN: SPI0 Control Register
RXOVRN
R/W
Bit4
255).
NSSMD1
Rev. 1.2
R/W
Bit3
C8051F060/1/2/3/4/5/6/7
NSSMD0
R/W
Bit2
TXBMT
Bit1
R
and
Section “21.3. SPI0
SFR Address:
SFR Page:
SPIEN
R/W
Bit0
0xF8
0
Addressable
Reset Value
00000110
Bit
259
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