h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 228

• 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)
Note: Do not set bits 1 and 0 to 1 simultaneously.
8.2.12
DTSTRC is a register provided in each pointer set. DTSTRC includes the interrupt flags for each
pointer set.
When any one bit of bits 7 to 4 is set to 1, a flag corresponding to the pointer set number in
DTSTRA is set. When any one bit of bits 3 and 2 is set to 1, a flag corresponding to the pointer set
number in DTSTRB is set.
Rev. 3.00 Jan 25, 2006 page 176 of 872
REJ09B0286-0300
Bit
3
2
1
0
Bit Name
LOAD
MARK
REST
STCLR
Data Transfer Status Register C (DTSTRC)
Initial Value
0
0
0
0
R/W
W
W
W
W
Description
Pointer Reload
If this bit is set to 1 when the TMP settings are
made, this bit copies the contents of TMP to
RAR or WAR.
When the read temporary pointer is used, the
contents of TMP are copied to RAR.
When the write temporary pointer is used, the
contents of TMP are copied to WAR.
Pointer Mark
If this bit is set to 1 when the TMP settings are
made, this bit copies the contents of RAR or
WAR to TMP.
When the read temporary pointer is used, the
contents of RAR are copied to TMP.
When the write temporary pointer is used, the
contents of WAR are copied to TMP.
Pointer Reset
When this bit is set to 1, this bit initializes RAR,
WAR, and TMP, and also returns the status to
FIFO empty state.
Status Clear
Clears information of FIFO full and FIFO empty.