27.1.1999
4A0701GB.__1
7
Product: TDP-52-SN3 (Sigma Gold) / OA0701 Processor
5.1.4.2 Memories
Memory and external I/O-circuit address coding is done with the ASIC circuit
I305. The circuit options CSR, CSP, and OE are 0-active.
The program memory is in 256k*8 EPROM. The program uses the addresses
2100H...FFFFH. Page selection makes available another similar memory
block.
RAM-memory is 8k*8 CMOS RAM at the addresses 0000H...1FFFH. RAM
receives its power supply from its own regulator which is always operating,
even when the radio is in the OFF state.
5.1.4.3 The Modem
The FFSK modem is located in the audio circuit. The modem is connected to
the CPU by a series line, input to synchronised port, and transmission is
controlled by an ASIC series output. The modem gives a 1200 Hz signal
RXCLK to the processor and TXCLK to ASIC. There is a data detector within
the modem, the speed of which is controlled by C438.The CPU A/D converter
measures the level of acceptance from ERPDET line. The same detector also
serves to control the HF function.
5.1.4.4 AFC
The AFC function is performed by an internal ASIC frequency counter. A 450
kHz intermediate frequency is amplified to a square-wave form by Q305. The
frequency is adjusted by ASIC pulse frequency modulated signal D/A 0, which
is integrated by C378. This approx. 2.5V DC voltage is fed to the synthesiser
AFC pin.
5.1.4.5 Sleep Timer
The phone puts the central functions to sleep for a time. Although everything
seems normal to the user, most of the functions are closed down. The radio
and audio units are closed down completely. The processor still has a power
supply, but the processor is halted and has minimal power consumption. Only
the ASIC circuit sleep timer and its 32 kHz crystal oscillator remain in active
mode. The phone is "woken up" by interrupting the sleep timer or by changing
the keyboard state. The sleep timer 32 kHz clock freqency is produced by the
oscillator made by crystal X305.
5.1.4.6 Warm Start
C352 and R352 measure the length of a voltage break. The voltage drops
during a break, after which it is measured by the A/D convertor. The time
constant is approx. 10 s . Thus a "warm start" is detected.
Summary of Contents for SIGMA GOLD TDP-52-SN3
Page 1: ...27 1 1999 Dp_52ngbTOC fm 1 Product TDP 52 SN3 SERVICE MANUAL BENEFON SIGMA GOLD TDP 52 SN3 ...
Page 12: ...27 1 1999 2DP_52GB 7 Product TDP 52 SN3 General Line interface Branching unit LIF 40 DB 40 ...
Page 15: ...1user_gb fm 1 2 0 OWNER S MANUAL ...
Page 57: ...27 1 1999 4A0701GB __1 23 Product TDP 52 SN3 Sigma Gold OA0701 Proc ...
Page 58: ...27 1 1999 4A0701GB __1 24 Product TDP 52 SN3 Sigma Gold OA0701 Proc ...
Page 59: ...27 1 1999 4A0701GB __1 25 Product TDP 52 SN3 Sigma Gold OA0701 Proc ...
Page 60: ...27 1 1999 4A0701GB __1 26 Product TDP 52 SN3 Sigma Gold OA0701 Proc ...
Page 61: ...27 1 1999 4A0701GB __1 27 Product TDP 52 SN3 Sigma Gold OA0701 Proc ...
Page 62: ...27 1 1999 4A0701GB __1 28 Product TDP 52 SN3 Sigma Gold OA0701 Proc ...
Page 67: ...27 1 1999 4H0700GB __2 33 Product TDP 52 SN3 Sigma Gold OH0700 The Top Side Layout PH0700 A5 ...
Page 69: ...27 1 1999 4H0700GB __2 35 Product TDP 52 SN3 Sigma Gold OH0700 ...
Page 84: ...27 1 1999 4Y0725GB 50 Product TDP 52 SN3 Sigma Gold OY0725 RF ...
Page 85: ...27 1 1999 4Y0725GB 51 Product TDP 52 SN3 Sigma Gold OY0725 RF ...
Page 86: ...27 1 1999 4Y0725GB 52 Product TDP 52 SN3 Sigma Gold OY0725 RF ...
Page 87: ...26 1 1999 8HAR_GB fm 1 6 0 CHARGING CHARGING ...
Page 90: ...26 1 1999 8CARA_GB fm 1 7 0 CAR ASSEMBLY KIT CAR ASSEMBLY KIT ...
Page 98: ...27 1 1999 8udh50gb_fm5 fm 9 Product UDH 50 Carbox OO0700 The Top Side Layout PW0700B2 ...
Page 99: ...27 1 1999 8udh50gb_fm5 fm 10 Product UDH 50 Carbox OO0700 The Bottom Side Layout PW0700B2 ...
Page 100: ...27 1 1999 8udh50gb_fm5 fm 11 Product UDH 50 Carbox OO0700 A2 ...
Page 101: ...27 1 1999 8udh50gb_fm5 fm 12 Product UDH 50 Carbox OO0700 A2 ...
Page 102: ...27 1 1999 8udh50gb_fm5 fm 13 Product UDH 50 Carbox OO0700 A2 ...
Page 103: ...27 1 1999 8udh50gb_fm5 fm 14 Product UDH 50 Carbox OO0700 A2 ...
Page 113: ...27 1 1999 8UDH50GB __1_f 24 Product UDH 50 Carbox OW0700 The Top Side Layout PW0700A5 ...
Page 114: ...27 1 1999 8UDH50GB __1_f 25 Product UDH 50 Carbox OW0700 The Bottom Side Layout PW0700A5 ...
Page 115: ...27 1 1999 8UDH50GB __1_f 26 Product UDH 50 Carbox OW0700 A5 ...
Page 116: ...27 1 1999 8UDH50GB __1_f 27 Product UDH 50 Carbox OW0700 A5 ...
Page 117: ...27 1 1999 8UDH50GB __1_f 28 Product UDH 50 Carbox OW0700 A5 ...
Page 118: ...27 1 1999 8UDH50GB __1_f 29 Product UDH 50 Carbox OW0700 A5 ...
Page 119: ...27 1 1999 8UDH50GB __1_f 30 Product UDH 50 Carbox OW0700 A5 ...
Page 124: ...27 1 1999 8kds50gb_fm5 fm 35 Product KDS 50 Hands free Cradle YO0701 KDS 50 ...
Page 131: ...27 1 1999 8HDS50GB_fm5 f 42 Product HDS 50 Ext Handset With Cradle HLS 41 HDS 50 HXS 40 ...
Page 133: ...27 1 1999 8OSET_GB fm 1 8 0 OFFICE SET OFFICE SET ...
Page 147: ...27 1 1999 8dds50gb_fm5 fm 15 Product DDS 50 Office set OO0303 ...
Page 148: ...27 1 1999 8dds50gb_fm5 fm 16 Product DDS 50 Office set OO0303 ...
Page 149: ...27 1 1999 8dds50gb_fm5 fm 17 Product DDS 50 Office set OO0303 ...
Page 151: ...27 1 1999 8dds50gb_fm5 fm 19 Product DDS 50 Office set OO0301 ...
Page 153: ...27 1 1999 8dds50gb_fm5 fm 21 Product DDS 50 Office set OO0302 ...
Page 154: ...27 1 1999 8dds50gb_fm5 fm 22 Product DDS 50 Office set OO0302 ...
Page 161: ...27 1 1999 8hxs40gb_fm5 fm 29 Product HXS 40 External Handset HLS 41 HDS 50 HXS 40 ...
Page 162: ...27 1 1999 8OTHE_GB fm 1 9 0 OTHER ACCESSORIES OTHER ACCESSORIES ...
Page 174: ...27 1 1999 Xo0245e4_fm5 fm 13 Product LIF 40 Line Interface OO0245 Solder Side Layout PO0245A0 ...
Page 175: ...27 1 1999 Xo0245e4_fm5 fm 14 Product LIF 40 Line Interface OO0245 ...
Page 176: ...27 1 1999 Xo0245e4_fm5 fm 15 Product LIF 40 Line Interface OO0245 ...
Page 177: ...27 1 1999 Xo0236e4_fm5 fm 16 Product DB 40 Branching Unit YO0236 9 2 BRANCHING UNIT YO0236 ...
Page 183: ...27 1 1999 Xo0236e4_fm5 fm 22 Product DB 40 Branching Unit OO0241 ...
