Sharp FO-6700 Service Manual download pdf (Page 59)

FO-6700U

FO-67DL

5 – 3

HD6437021 (IC12) Terminal descriptions

Classification Code

Terminal No.

I/O Name Function

(TFP-100B)

Bus control WAIT 54 I Wait It is input to insert Tw into the bus cycle during access to the

external space.

RAS 52 O Low address strobe Timing signal of low address strobe of DRAM

CASH 47 O High-order column Timing signal of column address strobe of DRAM

address strobe It is output for access to high-order 8 bits of data.

CASL 49 O Low-order column Timing signal of column address strobe of DRAM

address strobe It is output for access to low-order 8 bits of data.

RD 57 O Read It indicates that outside is read out.

WRH 56 O High-order write It indicates writing at the external high-order 8 bits.

WRL 55 O Low-order write It indicates writing at the external low-order 8 bits.

CS0~CS7 46~49, O Chip select 0 thru 7 Chip select signal for external memory or device

51~54

AH 61 O Address hold Address hold timing signal for device which uses multiplex bus of

address/data

HBS, 20 O Low-/high-order byte Strobe signal of high/low byte

LBS 56 strobe (Commonly used with AO, WRH.)

WR 55 O Write Output during writing. (Commonly used with WRL.)

DMAC DREQ0, 66,68 I DMA transfer request Input terminal of DMA transfer request from external

DREQ1 (Channels 0 and 1)

DACK0, 65,67 O DMA transfer request It indicates that DMA transfer request is received.

DACK1 receiving (Channels

0 and 1)

16-bit TIOCA0, 51, I/O ITU input Output terminal of input capture input/output conveyor

integrated TIOCB0 53 capture/output

timer pulse unit conveyor (Channel 0)

(ITU)

TIOCA1, 62, I/O ITU input Output terminal of input capture input/output conveyor

TIOCB1 64 capture/output

conveyor (Channel 1)

TIOCA2, 83, I/O ITU input Output terminal of input capture input/output conveyor

TIOCB2 84 capture/output

conveyor (Channel 2)

TIOCA3, 85, I/O ITU input Output terminal of input capture input/output conveyor

TIOCB3 86 capture/output

conveyor (Channel 3)

TIOCA4, 87, I/O ITU input Output terminal of input capture input/output conveyor

TIOCB4 89 capture/output

conveyor (Channel 4)

TOCXA4, 90, O ITU output conveyor Output terminal of output conveyor

TOCXB4 91 (Channel 4)

TCLKA~ 65,66,90, I ITU timer clock input External clock input terminal to counter of ITU

TCLKD 91

Timing pattern TP15~ 100~93, O Timing pattern Output terminal of timing pattern

controller (TPC) TP0 91~89, Output 15 thru 0

87~83

Serial TxD0, 94, O Sending data Sending data output terminal of SCI0, 1

communication TxD1 96 (Channels 0 and 1

interface (SCI)

RxD0, 93, I Receiving data Receiving data input terminal of SCI0, 1

RxD1 95 (Channels 0 and 1)

SCK0, 97, I/O Serial clock Clock input/output terminal of SCI0, 1

SCK1 98 (Channels 0 and 1)

I/O port PA15~ 68~64, I/O Port A Input/output terminal of 16 bits

PA0 62~60, Input/output can be assigned for each bit.

58~51

PB15~ 100~93, I/O Port B Input/output terminal of 16 bits

PB0 91~89, Input/output can be assigned for each bit.

87~83

1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 191 192

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Sharp FO-6700 Service Manual Page 59

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