r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1519

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

30.2
Table 30.1 shows the pin configuration of the H-UDI.
Table 30.1 Pin Configuration of H-UDI
Pin Name
TCK
TMS
TRST*
TDI
TDO
ASEBRK/
BRKACK
AUDSYNC,
AUDCK,
AUDATA3 to
AUDATA0
MPMD
2
Input/Output Pins
Mode
Data input
Chip-mode Input
Function
Clock
Reset
Data output Output Data Output Pin
Emulator
Emulator
I/O
Input
Input
Input
Input
I/O
Output Pins for emulators
Description
The functions are the same as the serial clock
input pin of JTAG. In synchronization with this
signal, data is sent from the TDI pin to the H-
UDI circuit or data is read from the TDO pin.
Mode Select Input Pin
The meaning of data input from the TDI pin is
determined by changing this signal in
synchronization with TCK. The protocol
supports JTAG (IEEE 1149.1) with the subset.
H-UDI Reset Input Pin
This signal is received without relating to TCK.
The JTAG interface circuit is reset when this
signal is at a low level. Regardless of whether
JTAG is used or not, TRST should be set to a
low level during a specific period when power is
turned on. This does not conform to the IEEE
standard.
Data Input Pin
Data is sent to the H-UDI circuit by changing
this signal in synchronization with TCK.
Data is read from the H-UDI circuit by reading
this signal in synchronization with TCK.
Pins for emulators
Indicates whether the operating mode of this
LSI is emulation support mode (MPMD = 0) or
chip mode (MPMD = 1).
Rev.1.00 Jan. 10, 2008 Page 1489 of 1658
30. User Debugging Interface (H-UDI)
REJ09B0261-0100
When Not
in Use
Open*
Open*
Fixed to
ground or
connected to
the PRESET
pin*
Open*
Open
Open*
Open
Open
3
1
1
1
1