h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 238

• 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)
Table 8.4
Rev. 3.00 Jan 25, 2006 page 186 of 872
REJ09B0286-0300
Requests from
Peripheral
Modules
Data transfer
Requests from Peripheral Modules and RFU Bus Cycle
Transfer Condition and FIFO Pointer
Status
RAM
modules
TMP is not used
RAM
modules
TMP is used as
a read temporary
pointer
Peripheral modules
TMP is not used
Peripheral modules
TMP is used as
a write temporary
pointer
RAM
RAM
peripheral
peripheral
Other than
the following
RAR = WAR after
RAR addition
RAR = WAR
Other than
the following
RAR = WAR after
RAR addition
RAR = WAR
Other than
the following
WAR = RAR after
WAR addition
WAR = RAR
Other than
the following
WAR = RAR after
WAR addition
WAR = RAR
RFU Bus Cycle
Contents
RAM read, peripheral
module write cycle
RAM read, peripheral
module write cycle
Notification of FIFO
empty state
Notification of FIFO
overread state
RAM read, peripheral
module write cycle
RAM read, peripheral
module write cycle
Notification of FIFO
empty state
Notification of FIFO
overread state
RAM read, peripheral
module write cycle
Peripheral module read,
RAM write cycle
Notification of FIFO
full state
Notification of FIFO
overwrite state
RAM read, peripheral
module write cycle
Peripheral module read,
RAM write cycle
Notification of FIFO full
state
Notification of FIFO
overwrite state
Pointer
Manipulation
Adds RAR
Adds RAR
No pointer
manipulations
Adds RAR
Adds RAR
No pointer
manipulations
Adds WAR
Adds WAR
No pointer
manipulations
Adds WAR
Adds WAR
No pointer
manipulations