UPD77017GC-XXX-9EU 查看數據表（PDF） - NEC => Renesas Technology

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UPD77017GC-XXX-9EU

16 bits, Fixed-point Digital Signal Processor

NEC => Renesas Technology 

µPD77015, 77017, 77018

• Host interface

Symbol

HA1

82

Pin No.

HA0

HCS

HRD

HWR

HRE

HWE

HD7 - HD0

81

78

79

80

66

67

70 - 77

I/O

Function

I

Specifies register which HD7 to HD0 access

1: Accesses HST: Host interface status register

when HA1 = 0

0: Accesses HDT(in): Host transmit data register when

HWR = 0

0: Accesses HDT(out): Host receive data register when

HRD = 0

I

Specifies bits of registers which HD7 to HD0 access

• 1: Accesses bits 15-8 of HST, HDT(in) or HDT(out)

• 0: Accesses bits 7-0 of HST, HDT(in) or HDT(out)

I

Chip select input

I

Host read input

I

Host write input

O

Host read enable output

O

Host write enable output

I/O (3S) 8 bits host data bus

Remark The state of the pins added 3S becomes high impedance when the host does not access host interface.

• I/O port

Symbol

P3 - P0

Pin No.

62 - 65

I/O

I/O

I/O port

Function

13

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