Sanyo DC-TS750 Service Manual page 30

IC BLOCK DIAGRAM & DESCRIPTION
IC800 ZR36705TQC (Micro Controller)
Pin Pin I/O Circuit
Number Name Format
19 RDY/P80
20 BGRNTX/P81
21 BRQ/P82
22 RDX/P83
23 WR0X/P84
24 WR1X/P85
11 CS0X/PA0
10 CS1X/PA1
9 CS2X/PA2
8 CS3X/PA3/EOP1
7 CS4X/PA4
6 CS5X/PA5
73 AN1/STREQ
/DRVV
LD/PD1
74 AN2/DVDSOS
/PD2
75 AN3/INT5/PD3
69 AVCC
70 AVRH
71 AVSS/AVRL
4,43,93 VCC
15.40. VSS
65.90
78 SC0/PF2
79 SI1/PF3
80 SO1/PF4
E External Ready input, 0 is input when the bus cycle being executed is not completed.
When the pin is not used for this purpose, it can be used as a general-purpose I/O port.
F Output of external bus release acceptance. L is output when the external bus has been released.
When the pin is not used for this purpose, it can be used as a general-purpose I/O port.
E Input of external bus release request. 1 is input to request that the external bus be released.
When the pin is not used for this purpose, it can be used as a general-purpose I/O port.
F External bus read strobe.
When this pin is not used for this purpose, it can be used as general-purpose I/O port.
F External bus write strobes. Individual control signals and data bus byte positions have the following
relationships.
For 16-bit bus width: WR0X strobes D15:D08
WR1X strobes D07:D00
For 8-bit bus width: WR0X strobes D15:D08
WR1 used as P85
Note: WR1X is Hi-Z while it is in reset stata. When it is used asa 16-bit bus, attach a pull-up resistor to the
outside.
[P84 or P85] When WR0X or WR1X is not used, the pin can be used as a general-purpose I/O port.
F Chip Select 0 output (active-low)
Chip Select 1 output (active-low)
Chip Select 2 output (active-low)
[PA0,1,or 2] When the pin is not used for the above purpose, it can be used as a general-purpose I/O port.
F Chip Select 3 output (active-low)
[EOP1] DMAC EOP1 output (ch 1). This function is valid when DMAC EOP outputis enaabled.
[PA3] When CS3X and EOP1 are not used, the pin can be used as a general-purpose I/O port.
F Chip Select 4 output (active-low)
Chip Select 5 output (active-low)
[PA4 or 5] When the pin is not used for the above purpose, it can be used as a general-ourpose I/O port.
G [AN1] A/D converter analog input. This input is used from time to time while input operation is selested.
Therefore, it is needed to stop output by other functions except when such output is performed intentionally.
[STREQ] STREQ output. This function is valid when STREQ output is enabled.
[PD1] General-purpose I/O port. This function is valid when STREQ output is disabled.
[DRVVLD] DRVVLD input. This input isused from time to time while input operation is selected.
Therefore, it is needed to stop output by other functions except when such output is performed intentionally.
G [AN2] A/D converter analog input. This input is used from time to time while input operation is selected.
Therefore, it is needed to stop output by other functions except when such output is performed intentionally.
[DVDSOS] DVDSOS output. Thhis function is valid when DVDSOS output is enabled.
[PD2] General-purpose I/O port. This function is valid when DVDSOS output is disabled.
G [AN3] A/D converter analog input. This input isused from time to time while input operation is selected.
Therefore, it is needed to stop output by other functions except when such output is performed intentionally.
[INT5] Inpit of external interrupt request. This input is used from time to time while the corresponding
external interrupt is enabled. Therefore, it is needed to stop output by other functions except when such
output is performed intentionally.
[PD3] General-purpose I/O port.
- VCC power supply for A/D converter.
- Reference voltage of A/D converter (high potential side).
Always turn the pin on or off while the voltage equal to AVCC or higher is applied to VCC.
- A/D converter VSS power supply and reference voltage (low potential side).
- Digital circuit power supply.Be sure to connect the power supply to every VCC pin.
- Digital circuit ground level.
F [SC0] UART0 clock I/O Clock output can be used when UART0 clock output is enabled.
[PF2] General-purpose I/O port. This function is valid when UART0 clock output is disabled.
F [SI1] UART1 data input. This input is used from time to time while input operation is selected.
Therefore, it is needed to stop output by other functions except when such output is performed intentionally.
[PF3] General-purpose I/O port.
F [SO1] UART1 data output. This function is valid when UART1 data outout is enabled.
[PF4] General-purpose I/O port. This function is valid when UART1 data output is disabled.
Function
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