Yamaha CD-S300 Service Manual page 26

CD-S300
Pin No.
5, 20, 40
8, 19
39
21, 22, 23, 24, 25, 26, 27, 28
9, 10, 11, 12, 13, 14, 15, 16
29, 30, 31, 32, 33, 34, 35, 36
41, 42, 43, 44, 45
26
Function Name I/O
VSS1, VSS2, VSS3 – - power supply
VDD1, VDD2 – + power supply
VDD3 – USB reference voltage
I/O • 8-bit I/O ports
Port 0
P00 to P07
• I/O specifiable in 4-bit units
• Pull-up resistors can be turned on and off in 4-bit units
• HOLD reset input
• Port 0 interrupt input
• Pin functions
AD converter input ports : AN0 to AN7 (P00 to P07)
On chip debugger pins : DBGP0 to DBGP2 (P02 to P04)
P05 : System clock output/audio interface SDAT input/output
P06 : Timer 6 toggle output/audio interface BCLK input/output
P07 : Timer 7 toggle output/audio interface LRCK input/output
I/O • 8-bit I/O ports
Port 1
P10 to P17
• I/O specifiable in 1-bit units
• Pull-up resistors can be turned on and off in 1-bit units
• Pin functions
P10 : SIO0 data output
P11 : SIO0 data input/bus input/output
P12 : SIO0 clock input/output
P13 : SIO1 data output
P14 : SIO1 data input/bus input/output
P15 : SIO1 clock input/output
P16 : Timer 1 PWML output
P17 : Timer 1 PWMH output/beeper output
I/O • 8-bit I/O ports
Port 2
P20 to P27
• I/O specifiable in 1-bit units
• Pull-up resistors can be turned on and off in 1-bit units
• Pin functions
P20 to P23 : INT4 input/HOLD reset input/timer 1 event input/timer 0L capture input/
P24 to P27 : INT5 input/HOLD reset input/timer 1 event input/timer 0L capture input/
P20 : INT6 input/timer 0L capture 1 input
P22 : SIO4 data input/output/parallel interface RD output
P23 : SIO4 data input/output/parallel interface WR output
P24 : SIO4 clock input/output/lNT7 input/timer 0H capture 1 input
P25 : SIO9 data input/output/parallel interface RD9 output
P26 : SIO9 data input/output/parallel interface WR9 output
P27 : SIO9 clock input/output
Interrupt acknowledge types
INT4
INT5
INT6
INT7
Port 3 I/O • 5-bit I/O ports
P30 to P34 • I/O specifiable in 1-bit units
• Pull-up resistors can be turned on and off in 1-bit units
• Pin functions
P30 : UART1 transmit
P31 : UART1 receive
P33 : Audio interface PLL filter pin
P34 : USB interface PLL filter pin
Detail of Function
timer 0H capture input
timer 0H capture input
Rising
Rising Falling and
Falling
enable enable enable
enable enable enable
enable enable enable
enable enable enable
Option
No
No
Yes
Yes
Yes
Yes
H level L level
disable disable
disable disable
disable disable
disable disable
Yes