參數(shù)資料
型號(hào): PXASCCKFBE
廠商: NXP SEMICONDUCTORS
元件分類(lèi): 微控制器/微處理器
英文描述: CMOS 16-bit communications microcontroller
中文描述: 16-BIT, 30 MHz, MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, SOT-407-1, LQFP-100
文件頁(yè)數(shù): 8/42頁(yè)
文件大?。?/td> 229K
代理商: PXASCCKFBE
Philips Semiconductors
Preliminary specification
XA-SCC
CMOS 16-bit communications microcontroller
1999 Mar 29
8
CONTROL REGISTER OVERVIEW
There are two types of control registers in the XA-SCC, these are
SFRs (Special Function Registers), and MMRs (Memory Mapped
Registers.) The SFR registers, with the exception of MRBL, MRBH,
MICFG, BCR, BRTH, BRTL, and RSTSRC are the standard XA core
registers. See
WARNINGs about BCR, BRTH, and BRTL in the
Table below.
SFRs are accessed by “direct addressing” only (see IC25 XA User
Manual for direct addressing.) The MMRs are specific to the
XA-SCC on board peripherals, and can be accessed by any
addressing mode that can be used for off chip data accesses. The
MMRs are implemented in a relocatable block. See the MIF chapter
in the XA-SCC User Manual for details on how to relocate the
MMRs by writing a new base address into the MRBL and MRBH
(MMR Base Low and High) registers.
Table 1. Special Function Registers (SFR)
1, 2, 3
NAME
DESCRIPTION
SFR
Address
BIT FUNCTIONS AND ADDRESSES
MSB LSB
RESET
VALUE
BCR
Bus Configuration Reg
RESERVED—see warning
46Ah
WARNING—Never write to the BCR register in the XA-SCC part—it is initialized to
07h, the only legal value. This is not the same as for other XA derivatives.
07h
BTRH
Bus Timing Reg High
469h
WARNING—Immediately after reset, always write BTRH = 51h, followed by writing
BTRL = 40h in that order Follow these two writes with five NOPS This is not the
BTRL = 40h in that order. Follow these two writes with five NOPS. This is not the
same as for other XA derivatives.
FFh
BTRL
Bus Timing Reg Low
468h
EFh
MRBL#
MMR Base Address Low
496h
MA15
MA14
MA13
MA12
MRBE
x0h
MRBH#
MMR Base Address High
497h
MA23
MA22
MA21
MA20
MA19
MA18
MA17
MA16
xx
MICFG#
ClkOut Tri-St Enable
1 = Enabled
499h
CLKOE
01h
CS
Code Segment
443h
00h
DS
Data Segment
441h
00h
ES
Extra Segment
442h
00h
33F
33E
33D
33C
33B
33A
339
338
IEH*
Interrupt Enable High
427h
EHSWR3
EHSWR2
EHSWR1
EHSWR0
ESCP
EAuto
ESC23
ESC01
00h
337
336
335
334
333
332
331
330
IEL*
Interrupt Enable Low
426h
EA
EDMAH
EDMAL
EX2
ET1
EX1
ET0
EX0
00h
IPA0
Interrupt Priority A0
4A0h
PT0
PX0
00h
IPA1
Interrupt Priority A1
4A1h
PT1
PX1
00h
IPA2
Interrupt Priority A2
4A2h
PDMAL
PX2
00h
IPA3
Interrupt Priority A3
4A3h
Reserved
PDMAH
00h
IPA4
Interrupt Priority A4
4A4h
PSC23
PSC01
00h
IPA5
Interrupt Priority A5
4A5h
PSCP
PAutoB
00h
IPA6
Interrupt Priority A6
4A6h
PHSWR1
PHSWR0
00h
IPA7
Interrupt Priority A7
4A7h
PHSWR3
PHSWR2
00h
387
386
385
384
383
382
381
380
P0*
Port 0
430h
FFh
38F
38E
38D
38C
38B
38A
389
388
P1*
Port 1
431h
FFh
397
396
395
394
393
392
391
390
P2*
Port 2
432h
FFh
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