C8051F320DK Silicon Laboratories Inc, C8051F320DK Datasheet - Page 245

• 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

21. C2 Interface
C8051F320/1 devices include an on-chip Silicon Labs 2-Wire (C2) debug interface to allow Flash program-
ming and in-system debugging with the production part installed in the end application. The C2 interface
uses a clock signal (C2CK) and a bi-directional C2 data signal (C2D) to transfer information between the
device and a host system. See the C2 Interface Specification for details on the C2 protocol.
21.1. C2 Interface Registers
The following describes the C2 registers necessary to perform Flash programming through the C2 inter-
face. All C2 registers are accessed through the C2 interface as described in the C2 Interface Specification.
Bits7–0: The C2ADD register is accessed via the C2 interface to select the target Data register for
This read-only register returns the 8-bit device ID: 0x09 (C8051F320/1).
Bit7
Bit7
C2 Data Read and Data Write commands.
Address
0xB4
0x00
0x01
0x02
Bit6
Bit6
C2 Register Definition 21.1.
C2 Register Definition 21.2. C2 Device ID
Bit5
Bit5
Selects the C2 Flash Programming Control register for Data
Selects the Revision ID register for Data Read instructions
Selects the C2 Flash Programming Data register for Data
Selects the Device ID register for Data Read instructions
Bit4
Bit4
Rev. 1.4
Bit3
Read/Write instructions
Read/Write instructions
Bit3
Description
C2ADD: C2 Address
Bit2
Bit2
Bit1
Bit1
C8051F320/1
Bit0
Bit0
00000000
Reset Value
00001001
Reset Value
245