em78p613 ELAN Microelectronics Corp, em78p613 Datasheet - Page 15
em78p613
Manufacturer Part Number
em78p613
Description
Universal Serial Bus Series Microcontroller
Manufacturer
ELAN Microelectronics Corp
Datasheet
1.EM78P613.pdf
(46 pages)
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Product Specification (V1.0) 01.09.2009
(This specification is subject to change without further notice)
7.2.2.5
R4 (RAM select register) contains the address of the registers.
R4 [0~5] : used to select registers in 0x00h~0x3Fh. The Address 0x00~0x1F is a
R4 [6, 7] : used to select the registers bank (refer to the table below). The following are
7.2.2.6
7.2.2.7
7.2.2.8
7.2.2.9
R8[7]:
Bit 7
Bit 7
Extr_R
P77
Bit 7
Bit 7
Bit 7
BK1
P57
−
R4[7]Bk1
Extr_R
Extra RAM block switch
0 : Bank 0~Bank 3 (Extra RAM0)
1 : Bank 4~Bank 5 (Extra RAM1)
R4 (RAM Select Register) Default Value: (0B_00XX_XXXX)
R5 (Port 5 I/O Register) Default Value: (0B_0000_0000)
R6 (Port 6 I/O Register) Default Value: (0B_0000_0000)
R7 (Port 7 I/O Register) Default Value: (0B_0000_X000)
R8 SPIS (SPI Status Register) Default:(0B_0000_1000)
Bit 6
P76
common space. After 0x1Fh, SRAM is divided into four banks, using Bank
Select Register.
two examples:
(1) R4=00001100 and R4=10001100 point to the same Register 0x0Ch.
(2) R4=10111100 points to Register 0x3C in Bank 2.
0
0
1
1
Bit 6
SRO
Bit 6
Bit 6
Bit 6
BK0
P56
P66
Since 0x0Ch is in the common space, Bit 6 and Bit 7 are meaningless.
D- / P75 / DATA
Bit 5
Bit 5
SSE
Bit 5
Bit 5
Bit 5
Ad5
P55
P65
Bit 4
RBF
R4[6]Bk0
Bit 4
Bit 4
Bit 4
D+ / P74 / CLK
Ad4
P54
P64
0
1
0
1
Universal Serial Bus Series Microcontroller
Bit 4
/P5 Weakup
Bit 3
Bit 3
Bit 3
Bit 3
Ad3
P63
−
Bit 3
−
Bit 2
Bit 2
Bit 2
Bit 2
Ad2
P62
−
−
Bit 2
RAM Bank #
−
Bank 0
Bank 1
Bank 2
Bank 3
Bit 1
Bit 1
Bit 1
Bit 1
Ad1
P61
−
−
Bit 1
−
EM78P613
Set_Config
Bit 0
Bit 0
Bit 0
Bit 0
Ad0
P60
Bit 0
−
−
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