c8051t617 Silicon Laboratories, c8051t617 Datasheet - Page 204
c8051t617
Manufacturer Part Number
c8051t617
Description
Mixed Signal Byte-programmable Eprom Mcu
Manufacturer
Silicon Laboratories
Datasheet
1.C8051T617.pdf
(210 pages)
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C8051T610/1/2/3/4/5/6/7
20. C2 Interface
C8051T610/1/2/3/4/5/6/7 devices include an on-chip Silicon Labs 2-Wire (C2) debug interface to allow
EPROM programming and in-system debugging with the production part installed in the end application.
The C2 interface operates using only two pins: a bi-directional data signal (C2D), and a clock input
(C2CK). See the C2 Interface Specification for details on the C2 protocol.
20.1. C2 Interface Registers
The following describes the C2 registers necessary to perform EPROM programming functions through the
C2 interface. All C2 registers are accessed through the C2 interface as described in the C2 Interface Spec-
ification.
C2 Register Definition 20.1. C2ADD: C2 Address
204
Bits7–0: Write: Select target Data Read or Data Write register location:
Bit7:
Bit6:
Bits5-0:
Bit7
Address
The C2ADD register is accessed via the C2 interface to select the target Data register for
C2 Data Read and Data Write commands, and to report status information. Address register
writes select a register, while address register reads return status information.
Read: EPBusy. A ‘1’ indicates that the hardware is performing a write, read, or CRC opera-
tion.
Read: EPError. A ‘1’ indicates that the most recent EPROM operation failed.
Read: Don’t Care.
0xAC
0xDF
0xBF
0xAF
0xAE
0xAA
0xAB
0xA9
0x00
0x01
0x02
Bit6
Selects the Device ID Register (read only)
Selects the Revision ID Register (read only)
Selects the C2 Device Control Register
Selects the C2 EPROM Programming Control Register
Selects the C2 EPROM Data Register
Selects the C2 EPROM Address High Byte Register
Selects the C2 EPROM Address Low Byte Register
Selects the CRC0 Register
Selects the CRC1 Register
Selects the CRC2 Register
Selects the CRC3 Register
Bit5
Bit4
Rev. 0.3
Bit3
Description
Bit2
Bit1
Bit0
00000000
Reset Value
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