Signal Name Functions
LA[1] -[16] Address bus
nLB Lower Byte Select: Indicates Lower byte select signal of SRAM
LD[0] -[15] Data Bus
LDHW[1] -[0] Down Highway: Data output terminal connected to codec etc. as down data signal of local highway
nLEDALM Alarm display L: On
nLEDRUN RUN display L: On
nLOS Loss of synchronous signal: Reserve at present
LHWCLK[0] Highway Clock Signal (8MHz): Bit clock of local highway and selectable among 2.048 / 4.096 / 8.192MHz.
LUHW[1] -[0] Up Highway: Data input terminal connected to codec etc. as up data signal of local highway.
MASTER/nS Master/slave identification signal when SIC card (Future Option) as intersystem connection card is mounted. MPR
inputs this signal and detects which the MPR will be. H: Master L: Slave
MD0-2 Mode Control Terminal: Clock operation mode of CPU is set.MD2: L, MD1: L, MD0: H Fixed
MELODYSEL Melody IC Tune Name Select L: Ju te veux H: Minuet
MEX_MODE[0] -[3] Information Bit to know the memory mounting capacity etc. of MEX card. Reserve at present.
MOHSEL Switching Signal between internal hold sound source and external hold sound H: Internal L: External
Mu/nA Switching Signal of Sound Compression Law H: Mu-Law, L: A-Law
M/nS TDA100, TDA200 Identification Signal set on the back board. The MPR inputs this signal and detects which the MPR
will be. H: TDA200, L: TDA100
POWTYPE[0] -[1]
nPRS_MEX Press MEX: Information of MEX Card Attachment L: Attached, H: Not attached
nPRS_RMT Press RMT: Information of RMT Card Attachment L: Attached, H: Not attached
nPRS_SDB Press SD card: Information of SD Card Attachment L: Attached, H: Not attached
nRAS3L Lower Byte Address Row Address Strobe: RAS signal for SDRAM
nRAS3U Upper Byte Address Row Address Strobe: RAS signal for SDRAM
nRD Read: USB I/F, SD card I/F, ASIC, SRAM, Read signal for flash memory
RD/nWR Read/nWrite: Read/Write signal for SDRAM
nRESOUT Reset Out: Reset from CPU (IC101) to each card
nRESET Reset: Power-on reset signal
nRESETM Manual Reset: Manual reset request signal for CPU
RINGER Ringer Signal: Outputs square-wave of 16Hz/20Hz/25Hz as source signal of ringer
RING_SYNC Trigger Signal of Ringer Signal generation timing to each internal line card
nRTS2 Request To Send to RS-232C connector
RTS_RMT Request to Send: Flow signal for modem
RXD2 Receive Data from RS-232C connector
RXD_RMT Serial Data Output Terminal: ASIC
SDCD SD Card Detect Input
SDCLK SD Card Clock Out
SDCMD SD Command
SDDAT0-3 SD Card Data
SDWP SD Card Write Protect Input
SHW_CLK Intersystem Highway Clock Signal (4MHz) Bit clock of intersystem highway and selectable between
256KHz/512KHz/1.024MHz/2.048MHz/4.096MHz.
SHW_FH Intersystem Highway Synchronous Signal (8KHz) 8KHz frame synchronous signal of intersystem highway
TXD2 Transmit Data to RS-232C connector
TXD_RMT Serial Data Input Terminal: Data receiving terminal from RMT to UART in the ASIC
nUB Upper Byte Select: SRAM
USB_D+ USB Data +
USB_D- USB Data -
VBUS Bit indicating power source is supplied to USB bus [Host (PC etc.) is connected.] H: Host connected L: Host not
connected
VREF Reference Voltage for MOH Circuit Intermediate potential of +15V
nWAIT Wait: Hardware wait request signal for bus timing between CPU and ASIC
WDTCLR Reserve
nWE Write Enable: WE signal of SRAM
·
ASIC block
Configuration: IC102 (ASIC), IC111, X103 and so on.
Function: (IC102)
28
KX-TDA200BX
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