Onkyo TX-7920 - IC Block Diagram: μPD17103 CX-528; μPD17103 CX-528 Terminal Description

TX-7920
4 PD17103CX-528(Remote control decoder)
MODEL TX-7920
| Transminer| AM
Bus
line
Q703
Remote control
decoder
Infrared
XIN GND
X OUT POB2 — STAND-BY
RESET POB1 — RECEIVE
REMIN — PODO POBO — VOL IND
PH SENS — POD1 POC3 — VOL UP
POWER — POD2 POC2 — VOL DOWN
SYSIN — POD3 110] POC1 — PHONO
VDD | 9 | POCO — SYS OUT
Terminal Description
; 1 [xn | OSC Connect to the 8.00MHz ceramic oscillator
System reset terminal. Active low.
Signal input terminal from preamp. for remote control. Active low.
IN Phono detection input terminal. Active low.
w
is] ie) g
~ x
aide 3/715
Stand-by detection input terminal. During low input, only the POWER code is decoded
7 POD3 YS IN System code input terminal
Power supply terminal.
Output at this terminal are the custom code (16bits) remote control code input to REMOTE
IN, data code (8bits), and the serial code (12bits) that has been converted corresponding to
the decoded data code (8bits)
When the player PLAY/REEJECT is input, a high pulse of 200ms is output.
SYS OUT
PHONO
VOL DOWN When the volume DOWN code is input, a high pulse of 120ms is output.
VOL UP
VOLIND
o
a
e)
= tr vs)
When the volume UP code is input, a high pulse of 120ms is output.
POBO | VOL IND During the output of VOLUME UP/DOWN, a pulse ([T LT JT LTJ= 250ms) is output.
(Not used.)
POB1 | RECEI This is the display output for remote control reception. Output is low when decoded code is
being recieved.
POB2 “BY STAND-BY indication terminal.
[16 [Va [GND
—W-