h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 220

• 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)
Rev. 3.00 Jan 25, 2006 page 168 of 872
REJ09B0286-0300
Legend:
BAR
RAR
TMP
WAR
DATAN
FREEN
NRA
NWA
DTCRA
DTCRB
Notes: * Pointer sets 1 to 3 have a function similar to pointer set 0.
: Base address register
: Read address pointer
: Temporary pointer
: Write address pointer
: Valid data byte number
: Free area byte number
: Read start address
: Write start address
: Data transfer control register A
: Data transfer control register B
Internal address bus
Figure 8.1 Block Diagram of RFU
Internal data bus interface
DTSTRC : Data transfer status register C
DTIDR
DTIDSRA : Data transfer ID read/write select register A
DTIDSRB : Data transfer ID read/write select register B
DTSTRA : Data transfer status register A
DTSTRB : Data transfer status register B
DTCRC : Data transfer control register C
DTCRD : Data transfer control register D
DTIER
DTRSR
Internal data bus
DATAN/FREEN
Pointer set 1*
Pointer set 2*
Pointer set 3*
NRA/NWA
Pointer set 0
DTSTRC_0
DTCRA_0
DTCRB_0
DTIDSRA
DTIDSRB
DTIDR_0
DTSTRA
DTSTRB
WAR_0
DTCRC
DTCRD
DTRSR
RAR_0
TMP_0
BAR_0
DTIER
: Data transfer ID register
: Data transfer interrupt enable register
: Data transfer register select register
RFU activation request
Interrupt signal
DTI0 to DTI3
DTIE