Rainbow Electronics ATtiny10 - Manual (Page 105)

105
8127B–AVR–08/09
ATtiny4/5/9/10
14.7 Control and Status Space Register Descriptions
The control and status registers of the Tiny Programming Interface are mapped in the Control
and Status Space (CSS) of the interface. These registers are not part of the I/O register map
and are accessible via SLDCS and SSTCS instructions, only. The control and status registers
are directly involved in configuration and status monitoring of the TPI.
A summary of CSS registers is shown in Table 14-11 .
14.7.1 TPIIR – Tiny Programming Interface Identification Register
• Bits 7:0 – TPIIC: Tiny Programming Interface Identification Code
These bits give the identification code for the Tiny Programming Interface. The code can be
used be the external programmer to identify the TPI. The identification code of the Tiny Pro-
gramming Interface is shown in
Table 14-12 ..
14.7.2 TPIPCR – Tiny Programming Interface Physical Layer Control Register
• Bits 7:3 – Res: Reserved Bits
These bits are reserved and will always read zero.
Table 14-11. Summary of Control and Status Registers
Addr. Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0x0F TPIIR Tiny Programming Interface Identification Code
0x0E
...
0x03
Reserved – – – – – – – –
0x02 TPIPCR – – – – – GT2 GT1 GT0
0x01 Reserved – – – – – – – –
0x00 TPISR – – – – – – NVMEN –
Bit 7 6 5 4 3 2 1 0
CSS: 0x0F Programming Interface Identification Code TPIIR
Read/Write R R R R R R R R
Initial Value 0 0 0 0 0 0 0 0
Table 14-12. Identification Code for Tiny Programming Interface
Code Value
Interface Identification 0x80
Bit 7 6 5 4 3 2 1 0
CSS: 0x02 – – – – – GT2 GT1 GT0 TPIPCR
Read/Write R R R R R R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0