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參數(shù)資料
| 型號(hào)： | STSAM9708 |
| 廠商： | Atmel Corp. |
| 英文描述： | Sound Synthesis |
| 中文描述： | 聲音合成 |
| 文件頁數(shù)： | 3/30頁 |
| 文件大小： | 373K |
| 代理商： | STSAM9708 |
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3
ATSAM9708
1772D–DRMSD–01/04
Pin Description by Function
Notes:
1. ISA bus group pins are powered by V
CC1
power rail.
2. PC_D pads have 4 mA drive capabilities; other output pads have 16 mA drive capabilities.
3. To interface with PC ISA bus, V
CC1
should be connected to 5V power and PC_D bus should be buffered. Direction is given by
PC_RD signal.
4. Pin Names in this document exhibiting an overbar (PC_CS for example) indicates that the signal is active low.
Table 1.
Power Group
Name
Pin Count
Type
Function
GND
19
PWR
Power Ground. All GND pins should be returned to digital ground.
VC3
8
PWR
Core Power, +3.3V nominal (3V to 4.5V). All V
C3
pins should be returned to
+3.3V.
VCC1
5
PWR
Pad (except Memory Pad) Power, +3.0V to +5.5V. All V
CC
pins should be
returned to +5V (or 3.3V in case of single 3.3V supply).
VCC2
5
PWR
Memory Pad Power, +3.0V to +5.5V. All V
CC
pins should be returned to +5V (for
RAM or DRAM) or 3.3V (for SDRAM or 3.3V ROM).
Table 2.
ISA Bus Group
(1)
Name
Pin Count
Type
Function
PC_D[15:0]
(2, 3)
16
I/O
16-bit data bus to host processor.
Information on these pins is:
- 2 x parallel MIDI (MPU-401 type applications)
- 2 x high-speed burst data transfers to/from external memory
PC_A[2:0]
3
IN
Selects one of 8 internal registers:
0, 1: MPU-401 register processor #1
2, 3: Burst data (16-bit) processor #1
4 - 5: MPU-401 register processor #2
6 - 7: Burst data (16-bit) processor #2
PC_CS
(4)
1
IN
Chip select from host, active low.
PC_WR
1
IN
Write from host, active low.
PC_RD
1
IN
Read from host, active low.
PC_READY
1
TSout
Open drain output buffer. Driven low during 16-bit burst mode transfers to
synchronize host to the ATSAM9708 memory.
PC_IO16
1
TSout
Open drain output buffer; driven low during 16-bit burst mode transfers.
Indicates to host that a 16-bit I/O is in progress.
PC_IRQ
1
TSout
Tri-state output pin, active high. Can be connected directly to host PC_IRQ line.
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