h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 230

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 8 RAM-FIFO Unit (RFU)
8.2.13
DTIDR is a register provided in each pointer set. DTIDR selects the peripheral module, which is
an activation source of each pointer set.
A 4-bit ID has been assigned to the peripheral modules. DTIDR selects two IDs. The ID selected
by DTIDR is enabled by setting the IDE-A and IDE-B bits in DTCRA to 1.
When selecting an ID, the following two points should be noted:
8.2.14
DTIDSRA selects the direction for transferring ID15 to ID8. As IDs have already been assigned
for the peripheral modules, the transfer direction is fixed. For details, refer to section 8.8,
Operation.
Rev. 3.00 Jan 25, 2006 page 178 of 872
REJ09B0286-0300
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
To select two IDs, the IDs should be combined such that the data transfer direction is read and
write.
The same IDs should not be selected over several pointer sets.
Bit Name
ID-A3
ID-A2
ID-A1
ID-A0
ID-B3
ID-B2
ID-B1
ID-B0
Bit Name
IDRW15
IDRW14
IDRW13
IDRW12
IDRW11
IDRW10
IDRW9
IDRW8
Data Transfer ID Register (DTIDR)
Data Transfer ID Read/Write Select Register A (DTIDSRA)
Initial Value
0
0
0
0
0
0
0
0
Initial Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
ID-A Select
These bits write the ID number to be selected
by the IDE-A bit.
ID-B Select
These bits write the ID number to be selected
by the IDE-B bit.
Description
ID15 R/W to ID8 R/W
These bits select the direction for transferring
peripheral modules with ID numbers 15 to 8.
0: RAM
1: Peripheral modules (read)
Peripheral modules (write)
RAM