HD6417751 Datasheet, PDF (820/1105 Pages) Renesas Technology Corp – SuperH RISC engine

*3 Ground fixed or connected to the same signal (or the same behavior) as 5(6(7.
However, the following problem occurs in the ground fixed.
Minute current flows when 7567 is fixed to the ground because it is pulled up in the
chip. The current value follows the regulations of the pull-up resistance of the port pin.
This current does not affect the operation of the chip; however, it consumes
unnecessary power.
The maximum frequency of TCK (TMS, TDI, TDO) is 20 MHz. Make the TCK or SH7751 Series
CPG setting so that the TCK frequency is lower than that of the SH7751 Series peripheral module
clock.
21.1.4 Register Configuration
Table 21.2 shows the H-UDI registers. Except for SDBPR and SDBSR, these registers are mapped
in the control register space and can be referenced by the CPU.
Table 21.2 H-UDI Registers
CPU Side
H-UDI Side
Name
Abbre-
P4
viation R/W Address
Area 7
Address
Access Initial
Access Initial
Size Value*¹ R/W Size Value*¹
Instruction
register
SDIR R
H'FFF00000 H'1FF00000 16
H'FFFF R/W 32
H'FFFFFFFD
(Fixed
value*²)
Data register SDDR/ R/W H'FFF00008 H'1FF00008 32/16 Unde- — —
—
H
SDDRH
fined
Data register SDDRL R/W H'FFF0000A H'1FF0000A 16
Unde- — —
—
L
fined
Bypass
register
Interrupt
factor
register
SDBPR — —
—
—
SDINT R/W H'FFF00014 H'1FF00014 16
Unde-
fined
H'0000
R/W 1
W*³ 32
—
H'00000000
Boundary SDBSR — —
—
—
Unde- R/W —
Undefined
scan
fined
register
Notes: *1 Initialized when the 7567 pin goes low or when the TAP is in the Test-Logic-Reset
state.
*2 The value read from H-UDI is fixed (H'FFFFFFFD).
*3 1 can be written to the LSB using the H-UDI interrupt command.
Rev. 3.0, 04/02, page 780 of 1064