KX-TDA100DUP - Panasonic PBX Service Manual (repair manual). Page 11

11

1) Function

• System Control
• Circuit Switching (includes gain adjustment function)
• Conference Call (3 people x 8 ~ 8 people x 3)
• MOH
• PAGING
• Clock
• DPT port
• Serial Interface for PC-Programing and datable access (RS-232C and USB)
• DC/DC Converter generates +3.3v, +1.8v from +15v

2) Configuration

• Power Supply: DC/DC Converter
• CPU: Renesas SH7709S (133MHz)
• ASIC: Our own products
• ROM: 8Mbit x 1 (for boot programs)
• SDRAM: 128Mbit x 2 (for work area)
• SRAM: 8Mbit x 2 (for user data backup)
• SD card I/F (for operating programs) x 1
• USB I/F (for PC programming) x 1
• MOH: External sound input x 2
• PAGING: External output x 2
• DPT port x 4
• RS-232C connector x 1

3) Operation Rating

• Power Input: +15V
• Power Output: +15V (for MOH)

+3.3V (for I/O)
+3.3VB (for SRAM backup)
+1.8V (for CPU core)
+1.9VB (for clocking backup)