參數(shù)資料
型號(hào): AS8201
廠商: AUSTRIAMICROSYSTEMS AG
元件分類: 微控制器/微處理器
英文描述: TTP/C-C1 Communications Controller
中文描述: 2 CHANNEL(S), 2M bps, SERIAL COMM CONTROLLER, PQFP120
封裝: PLASTIC, QFP-120
文件頁(yè)數(shù): 7/13頁(yè)
文件大小: 247K
代理商: AS8201
TTP/C-C1 Communications Controller Data Sheet
AS8201
Rev. NC, October 1999
Page 7 of 13
Austria Mikro Systeme International AG
AC Characteristics
Clock applied at XOUT0, resp. XOUT1.
PARAMETER
data in setup
time
data output
valid
SYMBOL
tsetup
PIN
all IN,
all IO
all OUT,
all IO
MIN
20 ns
MAX
NOTE
vs. Falling edge of clk @XOUT0, XOUT1
tdav
35 ns
vs. rising edge of clk @ XOUT0, XOUT1
Application Information
ROM Interface
Pin name
ROM_DATA
ROM_ADDRESS
ROM_CEB
ROM_WEB
ROM_OEB
ROM_READY
ROM_RESETB
mode
inout (tri)
out
out
out
out
in
out
width
16
17
1
1
1
1
1
comment
ROM data bus
ROM address bus
ROM chip enable
ROM write enable
ROM output enable
ROM ready
external reset line
Table 1 ROM Interface Ports
The timing and behaviour of the ROM Interface is designed to operate with the AM29F200
Flash EPROM or compatible devices. For detailed timing information see [AM29F200]
1
. Figure
2 shows the connection between TTP/C-C1 controller and the AM29F200 Flash. The contents
of the Flash memory is loaded into the instruction memory by a boot sequencer automatically
after power on.
AM29F200
1
TTA-C1
RY/BY
RESET
WE
CE
OE
A0-A16
DQ0-DQ15
BYTE
VCC
1
rom_resetb
rom_web
rom_ceb
rom_oeb
rom_address
rom_ready
rom_data
Figure 2 ROM Interface
2
Host CPU Interface
The host CPU interface also referred as CNI (controller network interface) connects the
application circuitry to the TTP/C network. As shown in Table 2 all RAM_-lines provide
asynchronous read/write access to a dual ported RAM. There are no setup/hold constraints
referred to the microtick (main clock “clk”). The signals have to be applied for certain duration
according to Table 3. So, the applied signals get synchronised with the microtick. The TIME_-
1
[AMD96] Advanced Micro Devices, "Flash Memory Products - 1996 Data Book/Handbook", Advanced Micro Devices Inc., 1996.
2
The label TTA-C1 stands for TTP/C-C1 in the following diagrams
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