Diagrams; Ic Pin Function Description - Sony XES-Z50 Service Manual

7-1. IC PIN FUNCTION DESCRIPTION

MAIN BOARD IC501 mPD78P058GC-933-3B9 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 ENC Ð
2 NCO
3 NCO
4 AVSS
5 NCO
6 NCO
7 AVREF1
8 NCO
9 NCO
10 NCO
11 NCO
12 EEP SCK
13 EEP SDA
14 BUSY-MA
15 BUSY-TU
16 UNISI
17 UNISO
18 UNICKI
19 UNICKO
20 BUS ON
21 SYS RST
22 KEY ACT
23 TX-SEL
24 NCO
25 NCO
26 NCO
27 CAUTION
28 TIMPOL
29 TEL MUT
30 VOL STP
31 NCO
32 MUTE
33 VSS
34 NCO
35 NCO
36 NCO
37 NCO
38 NCO
39 NCO
SECTION 7

DIAGRAMS

I/O
I
Rotary encoder input from the rotary commander
O
Not used (open)
O
Not used (open)
Ñ
Ground terminal (for A/D conversion)
O
Not used (open)
O
Not used (open)
I
Reference voltage input terminal (+5V) (for D/A conversion)
O
O
Not used (open)
O
O
O
Serial data transfer clock signal output to the EEPROM (IC515)
I/O
Two-way data bus with the EEPROM (IC515)
O
Not used (open)
O
Not used (open)
I Serial data input from the bus interface (IC503) (for SONY bus)
O Serial data output to the bus interface (IC503) (for SONY bus)
I Serial data transfer clock signal input for the bus interface (for SONY bus)
Serial data transfer clock signal output to the tuner controller (IC502), bus interface (IC503)
O
(for SONY bus), and FM character multiple broadcast display controller (IC802)
Bus on/off control signal output to the tuner controller (IC502), bus interface (IC503) (for
O
SONY bus), and FM character multiple broadcast display controller (IC802) ÒLÓ: bus on
Reset signal output to the tuner controller (IC502), bus interface (IC503) (for SONY bus), and
O
FM character multiple broadcast display controller (IC802) ÒLÓ: reset
Key active control signal output terminal (for A/D conversion power control)
O
When KEY ACK (pin ^∞) is active, ÒLÓ is output to enable signal input
O
Not used (open)
O
O
Not used (open)
O
Input terminal to set whether a caution alarm (buzzer sounds if the front panel is not removed
I
when accessory power is in off status) sounds or not
ÒHÓ: not sound, ÒLÓ: sounds (fixed at ÒLÓ)
Input terminal to set whether time polling is provided or not
I
ÒHÓ: provided, ÒLÓ: none (fixed at ÒLÓ)
I
Telephone mute signal input terminal At input of ÒLÓ, the signal is attenuated by Ð20 dB
I
Not used (fixed at ÒLÓ)
O
Not used (open)
O
Mute control signal output of the tuner audio signal ÒHÓ: mute on
Ñ
Ground terminal
O
O
O
Not used (open)
O
O
O
– 52 –
Function