Yamaha PORTATONE PSR-9000 Service Manual page 21

HD63266F (XI939A00) FDC (Floppy Disk Controller)
PIN
NAME I/O
No.
1 8"//5" I Data transmission speed
2 XTALSET I Clock select
3 /RESET I Rest
4 E//RD I Enable/Read
5 RW//WR I Read/write/Write
6 /CS I Chip select
7 /DACK I DMA acknowledge
8 RS0 I Register select
9 RS1 I
10 VSS1
Ground
11 VSS2
12 D0 I/O
13 D1 I/O
14 D2 I/O
15 D3 I/O
Data bus
16 D4 I/O
17 D5 I/O
18 D6 I/O
19 D7 I/O
20 /DREQ O DMA request
21 /IRQ O Interrupt request
22 /DEND I Data end
23 VSS3 Ground
24 1/2 EX1
25 VCC1 Power supply
26 NUM1 I
27 NUM3 I
28 IFS I Host interface select
29 SFORM I Format data
30 /INP I Index pulse
31 /READY I Ready from FDD
32 /WPRT I Write control signal
PCM1716E/T2 (XU829A00) DAC (Digital to Analog Converter)
PIN
NAME I/O
No.
1 LRCK I Clock input
2 DATA I Data input
3 BCK I Bit clock
4 CLKO O System clock
5 XTI I Clock input
6 XTO O Clock out
7 DGND - Digital ground
8 VDD - Digital power supply (+5V)
9 Vcc2R - Analog power supply (+5V)
10 AGND2R - Analog ground
11 EXTR O Rch, analog output
12 NC -
13 VOUTR O Rch, analog voltage output
14 AGND1 - Analog ground
FUNCTION
FUNCTION
PIN
NAME I/O
No.
33 /TRKO I Track 00 signal
34 /INDEX I Index signal
35 /RDATA I Read data input from FDD
36 XTAL2 Clock
37 EXTAL2
38 NC
39 XTAL1 Clock
40 EXTAL1
41 VSS4 Ground
42 VSS5
43 NC
44 VCC2
45 VCC3 Power supply
46 VCC4
47 /WGATE O Write control
48 /WDATA O Writ data to FDD
49 VSS6 Ground
50 /STEP O Step signal to control head of FDD
51 /HDIR O Direction
52 /HLOAD O Head load
53 /HSEL O Head select
54 VSS7 Ground
55 /DS0 O
56 /DS1 O
Drive select
57 /DS2 O
58 /DS3 O
59 VSS8 Ground
60 /MON0 O
61 /MON1 O
Motor on
62 /MON2 O
63 /MON3 O
64 VSS9 Ground
PIN
NAME I/O
No.
15 Vcc1 - Analog power supply (+5V)
16 VOUTL O Lch, analog voltage output
17 NC -
18 EXTL O Lch, analog output
19 AGND2L - Analog ground
20 Vcc2L - Analog power supply (+5V)
21 /ZERO O Zero data flag
22 /RST I Reset
23 /CS/IWO I Chip select
24 MODE I Mode control select (H: Software, L: Hardware)
25 /MUTE I Mute control
26 MD/DM0 I Mode control data/ De-emphasis select1
27 MC/DM1 I Mode control BCK/De-emphasis select2
28 ML/IIS I Mode control Latch/input format select
PSR-9000
DP: IC17
FUNCTION
TG: IC4,5
FUNCTION
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