HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 558

• Manufacturer Part Number: HD6432160
• Description: Hitachi 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Table 19.2 Register Selection
19.3.4
The IDR registers are 8-bit read-only registers for the slave processor (this LSI), and 8-bit write-
only registers for the host processor. The registers selected from the host according to the I/O
address are shown in the following table. For information on IDR3 selection, see section 19.3.3,
LPC Channel 3 Address Register (LADR3). Data transferred in an LPC I/O write cycle is written
to the selected register. The state of bit 2 of the I/O address is latched into the C/' bit in STR, to
indicate whether the written information is a command or data. The initial values of IDR1 to IDR3
are undefined.
Rev. 2.0, 08/02, page 518 of 788
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
%LW#7
%LW#7
%LW#7
%LW#7
Bits 15 to 4
0000 0000 0110
0000 0000 0110
0000 0000 0110
0000 0000 0110
Input Data Registers 1 to 3 (IDR1 to IDR3)
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
0
0
1
0
0
1
I/O Address
Bit 2
0
1
0
1
0
0
1
0
0
1
I/O Address
0
0
0
Bit 3
0
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
0
0
1
0
0
1
Bit 2
0
1
0
1
Bit 0
0
0
0
0
0
1
1
0
1
1
0
0
1
1
Bit 1
0
0
0
Bit 0
0
Transfer
Cycle
I/O write
I/O write
I/O read
I/O read
I/O write
I/O write
I/O read
I/O read
Transfer
Cycle
I/O write
I/O write
I/O write
I/O write
Host Register Selection
IDR3 write, C/'3
IDR3 write, C/'3
ODR3 read
STR3 read
TWR0MW write
TWR1 to TWR15 write
TWR0SW read
TWR1 to TWR15 read
IDR1 write, C/'1
IDR2 write, C/'2
IDR2 write, C/'2
Host Register Selection
IDR1 write, C/'1
0
1
0
1
0
1