h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 565

• Manufacturer Part Number: h8s-2161b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

18.2
Table 18.1 lists the input and output pins of the XBS module.
Table 18.1 Pin Configuration
Note:
Name
I/O read
I/O write
Chip select 1
Chip select 2 *
Chip select 3
Chip select 4
Command/data
Data bus
Host interrupt 11
Host interrupt 1
Host interrupt 12
Host interrupt 3
Host interrupt 4
Gate A20
HIF shutdown
* Selection of CS2 or ECS2 is by means of the CS2E bit in STCR and the FGA20E bit in
Input/Output Pins
HICR. XBS channel 2 and the CS2 pin can be used when CS2E = 1. When CS2E = 1,
CS2 is used when FGA20E =0, and ECS2 is used when FGA20E = 1. In this manual,
both are referred to as CS2.
Abbreviation
IOR
IOW
CS1
CS2
ECS2
CS3
CS4
HA0
HDB7 to HDB0 P37 to
HIRQ11
HIRQ1
HIRQ12
HIRQ3
HIRQ4
GA20
HIFSD
Port
P93
P94
P95
P81
P90
PB2
PB3
P80
P30
P43
P44
P45
PB0
PB1
P81
P82
I/O
Input
Input
Input
Input
Input
Input
Input
I/O
Output
Output
Output
Output
Output
Output
Input
Section 18 Host Interface X-Bus Interface (XBS)
Function
Host interface read signal
Host interface write signal
Host interface chip select signal for IDR_1,
ODR_1, STR_1
Host interface chip select signal for IDR_2,
ODR_2, STR_2
Host interface chip select signal for IDR_3,
ODR_3, STR_3
Host interface chip select signal for IDR_4,
ODR_4, STR_4
Host interface address select signal
In host read access, this signal selects the
status registers (STR_1 to STR_4) or data
registers (ODR_1 to ODR_4). In host write
access to the data registers (IDR_1 to
IDR_4), this signal indicates whether the
host is writing a command or data.
Host interface data bus
Interrupt output 11 to host
Interrupt output 1 to host
Interrupt output 12 to host
Interrupt output 3 to host
Interrupt output 4 to host
A20 gate control signal output
Host interface shutdown control signal
Rev. 3.00 Mar 21, 2006 page 511 of 788
REJ09B0300-0300