h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 224
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h8s-2158
Manufacturer Part Number
h8s-2158
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2158.pdf
(927 pages)
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Section 8 RAM-FIFO Unit (RFU)
8.2.6
DATAN is 11-bit status data allocated to bits 10 to 0 in FSTR.
8.2.7
FREEN is 11-bit status data allocated to bits 10 to 0 in FSTR.
8.2.8
NRA is 32-bit status data allocated to bits 31 to 0 in FSTR.
Rev. 3.00 Jan 25, 2006 page 172 of 872
REJ09B0286-0300
Bit
31
to
11
10
to
0
Bit
31
to
11
10
to
0
Bit
31
to
0
Bit Name
—
—
Bit Name
—
—
Bit Name
—
Valid Data Byte Number (DATAN)
Free Area Byte Number (FREEN)
Read Start Address (NRA)
Initial Value
All 0
All 0
Initial Value
All 0
All 0
Initial Value
Undefined
R
R
R/W
R
R/W
R
R/W
R
Valid Data Byte Number
Free Area Byte Number
Read Start Addresses 31 to 0
Description
Reserved
These bits are always read as 0 and cannot be
modified.
These bits indicate the number of bytes of valid
data that can be read by FIFO in each pointer
set.
Description
Reserved
These bits are always read as 0 and cannot be
modified.
These bits indicate the number of bytes of the
free area that can be written to FIFO in each
pointer set.
Description
The RAM address is calculated by BAR + RAR
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