20
FZDA07ELEF2/EREF2/MRHF2
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
Application
Truth Value
Table
Processing Operation Description
26
RDS_RXD
I
For debugging 9588bps
H: When debugging no communication,
Communication speed is 9588bps,
L: Output is normally fi xed to L
26
NC
O
Not used
Output is fi xed to L, Terminal OPEN
27
BEEP
O
BEEP output
3kHz BEEP output (pulse), L: During no operation
28
DIR2_CS
O
DIR2 chip select control (Japan/HDD ripping)
* Shared with RDS_MUTE
L: Selected
H: Unselected
28
RDS_MUTE
O
MUTE circuit control during AFS
Connected to MUTE C of E_VOL (Other country
than Japan)
* Presently, it is an independent control
Shared with DIR2_CS
Nch open drain control
L: During MUTE operation
Hi-Z: When MUTE is cleared
29
DIR2_RST
O
DIR2 reset control (Japan/HDD ripping)
L: Reset, H: Reset is cleared
29
NC
O
Not used (Other country than Japan)
Output is fi xed to L, Terminal OPEN
30
NC
O
Not used
Output is fi xed to L, Terminal OPEN
31
BUS_DO
O
Sie-BUS data output
H: During no communication,
Communication speed is about 17kHz
32
BUS_DI
I
Sie-BUS data input
Input (H): During no communication,
Communication speed is about 17kHz
33
EVSS
GND terminal
GND connection
34
EVDD
Power supply terminal
BU3.3V connection
35
TUN_SDA
I/O
TUNER communication data
H (Hi-z): During no communication,
Communication speed is 328kHz
36
TUN_SCL
I/O
TUNER communication clock
H (Hi-z): During no communication,
Communication speed is 328kHz
37
SYS_ON
O
ON request to Sie-BUS
L: System ON request, H (Hi-z): Not requested
38
SYS_OFF
O
OFF request to Sie-BUS
* Not used in the simplifi ed Sie-BUS
L: When system OFF is requested
H (Hi-z): Not requested
39
TUN_IF
I
Detection of station in the TUNER
L: When station is found , H: When station is not found
40
DSP_SI
I
DSP data input
H: During no communication, Communication
speed is variable, During boot-up: 1.97MHz,
Normal condition: 3.93MHz
41
DSP_SO
O
DSP data output
Input (H): During no communication,
Communication speed is variable, During boot-
up: 1.97MHz, Normal condition: 3.93MHz
42
DSP_SCL
O
DSP clock output
H: During no communication, Communication
speed is variable, During boot-up: 1.97MHz,
Normal condition: 3.93MHz
43
EVOL_SDA
I/O
I2C communication data of EVOL (To the entire
destination)
Shared with TV_SDA
H (Hi-z): During no communication,
Communication speed is 328kHz
43
TV_SDA
I/O
I2C communication data of TV (Japan)
Shared with EVOL_SDA
H (Hi-z): During no communication,
Communication speed is 328kHz
44
EVOL_SCL
I/O
I2C communication clock of EVOL (To the entire
destination)
Shared with TV_SCL
H (Hi-z): During no communication,
Communication speed is 328kHz