參數(shù)資料
型號(hào)： SAK-TC1765T-L40EB
廠商： INFINEON TECHNOLOGIES AG
元件分類： 微控制器/微處理器
英文描述： 32-BIT, MROM, 40 MHz, MICROCONTROLLER, PBGA260
封裝： PLASTIC, LBGA-260
文件頁數(shù)： 38/88頁
文件大小： 1274K
代理商： SAK-TC1765T-L40EB
TC1765
Data Sheet
39
V1.2, 2002-12
Preliminary
External Bus Unit
The External Bus Unit (EBU) of the TC1765 is the interface between external memories
and peripheral units and the internal memories and peripheral units. The basic structure
of the EBU is shown in Figure 11.
Figure 11
EBU Structure and Interfaces
The EBU consists of two parts and is used for the following two operations:
FBU (FPI Bus Unit):
– Communication with external memories or peripheral units via the FPI Bus
– Non-burst instruction fetches
BIFU (Burst Instruction Fetch Unit):
– Instruction fetches from the PMU to external Burst Flash program memories with
16-bit and 32-bit data width
The EBU controls all transactions required for these two operations and in particular
handles the arbitration between these two tasks.
The types of external devices/Bus modes controlled by the FBU are:
– INTEL style peripherals (separate RD and WR signals)
– MOTOROLA style peripherals (OE and R/W)
–ROMs, EPROMs
– Static RAMs
– Peripherals with demultiplexed A/D bus
– Burst Mode Flash Memories
– 8-, 16- and 32-bit data bus width
M C A 04983
TriC ore
CP U
PM U
w ith on-ch ip
P rogam M em o ry
DM U
w ith on-ch ip
Data M em ory
EB U
Con trol
Lines
C hip S elec t
Lines
A [23:0]
D[31 :0]
FP I B us
Bu rst M o de
Instru ction
Fetches
To P e ripheral
U n its and D M A
5
EC O U T
EC IN
BIF U
FB U
10
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