Sharp FO-2970M Service Manual - Page 55

FO-2970MU FM336 (IC8) Terminal description PIN Signal Name I/O Type Interface 3 1 RESERVED 2 RS2 3 RS3 -- IA Host interface IA Host interface 4 RS4 5 /CS 6 /WR IA Host interface IA Host interface IA Host interface 7 /RD 8 /RDCLK 9 /RLSD IA Host interface OA DTE Serial interface OA DTE Serial interface 10 TDCLK 11 TXD 12 /CTS OA DTE Serial interface IA DTE Serial interface OA DTE Serial interface 13 VDD1 14 RESERVED 15 RESERVED PWR - -- -- 16 VSS 17 NC 18 /RESET GND - OA - NC Modem interconnect 19 SR4OUT 20 NC 21 SR4IN OA Modem interconnect - NC IA Modem interconnect 22 CLK_OUT 23 EYESYNC 24 EYECLK OA Modem interconnect OA Diagnosis signal OA Diagnosis signal 25 MAVSS 26 MAVDD 27 SPKR GND PWR O(DF) - - Telephone lines interface 28 TXA2 29 TXA1 30 VREF O(DD) O(DD) MI Telephone lines interface Telephone lines interface Modem interconnect 31 VC 32 RIN 33 MAVSS MI I(DA) AGND Modem interconnect Telepone lines interface - 34 /POR 35 RESERVED 36 RESERVED LA Modem interconnect -- -- 37 /TALK 38 VDD 39 RESERVED O(DD) PWR - Telephone lines interface - - 40 RESERVED 41 NC 42 M_CNTRL_SIN -- - NC IA Modem interconnect 43 M_CLKIN 44 M_TXSIN 45 M_SCK IA Modem interconnect IA Modem interconnect IA Modem interconnect 46 M_RXOUT 47 M_STROBE 48 RESERVED IA Modem interconnect IA Modem interconnect -- 49 OH 50 VDD O(DD) Telephone lines interface PWR - Notes: I/O types: MI = Modem interconnect IA, IB = Digital input OA, OB = Digital output I(DA) = Analog input O(DD), O(DF) = Analog output PIN Signal Name 51 RESERVED 52 VSUB 53 VSS 54 NC 55 NC 56 SLEEP 57 VDD1 58 RESERVED 59 RESERVED 60 NC 61 SR1IO 62 VCORE 63 VDD1 64 XTCLK 65 VSS 66 RESERVED 67 RXD 68 /DTR 69 VDD1 70 IA_SLEEP 71 VGG 72 YCLK 73 XCLK 74 EYEXY 75 /DSR 76 /RI 77 RINGD 78 /RTS 79 IRQ 80 VSS 81 GPO0 82 RESERVED 83 RESERVED 84 VDD1 85 XTALI/CLKIN 86 XTALO 87 D0 88 D1 89 D2 90 D3 91 D4 92 VDD1 93 D5 94 D6 95 D7 96 RS0 97 RS1 98 PLL VDD 99 VSS 100 PLL GND I/O Type Interface 3 -- GND - GND - - NC - NC MI Modem interconnect PWR - -- -- - NC MI Modem interconnect PWR - PWR - IA DTE Serial interface GND - -- OA DTE Serial interface IA DTE Serial interface PWR - MI Modem interconnect PWR - OA Overhead signal OA Overhead signal OA Diagnosis signal OA DTE Serial interface OA Telephone lines interface IA Telephone lines interface IA DTE Serial interface OA Host interface GND - MI Modem interconnect -- -- PWR - I Overhead signal O Overhead signal IA/OB Host interface IA/OB Host interface IA/OB Host interface IA/OB Host interface IA/OB Host interface PWR - IA/OB Host interface IA/OB Host interface IA/OB Host interface IA/OB Host interface IA/OB Host interface PWR - GND - GND - NC = Not connect RESERVED = No external connection allowed Interface description: HOST = Modem control unit (Host) DTE = Data terminal equipment 5 - 19