Sony SPP-69, Service Manual, Page: 16 / 32

– 16 –
SECTION 5
DIAGRAMS
5-1. IC PIN DESCRIPTIONS
• IC501 SB662104A-4L63-TLM (SYSTEM CONTROL) (BASE UNIT)
Pin No. Pin Name I/O Pin Description
1 STB O Strobe signal output to PLL.
2 DATA O Serial data output to PLL.
3 CLK O Serial clock output to PLL.
4 RX-DATA I RX data input
5 SIG-IN I RSSI/PLL-LOCK signal input (L: RSSI, H: PLL-LOCK)
6 H-MUTE O Half mute control output (L: Mute ON)
7 TX-DATA O TX data, external system alarm output
8 VSS — Ground
9 OSC2 O Crystal oscillation output (4.048 MHz)
10 OSC1 I Crystal oscillation input (4.048 MHz)
11 VDD — Power supply pin (+3 V)
12 RESET I System reset input (L: Reset)
13 TEST I Test pin (Connect to ground in this set.)
14 POW-DET I Power failure detection input (L: Power failure)
15 MBR I Make 30/40 (%) select input (H: 30%, L: 40%)
16 PAGE I HANDSET LOCATOR input (H: input)
17 DIAL MODE I DIAL MODE select input
18 CHG-DET I Charge detection input (L: Charge)
19 RSSI H/L O RSSI sensitivity select output (L: Low sensitivity)
20 DP O Dial pulse ON/OFF control output
21 DTMF O DTMF generator output
22 TX +B CTRL I TX B+ ON/OFF control input (L: TX ON)
23 – 26 M1 – 4 I Channel setting for test mode 1 – 4.
27 – 29 TEST3 – 1 I Test mode setting 3 – 1
30 RING I Ring detection input (L: Ring input)