Renesas PROM Programming Adapter PCA7408 Manual de usuario Pagina 35
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Valorado. / 5. Basado en revisión del cliente
M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Rev.1.00 Oct 01, 2002 page 35 of 110
REJ03B0134-0100Z
8.6.4 I
2
C Control Register
The I
2
C control register (address 00DA16) controls the data commu-
nication format.
(1) Bits 0 to 2: bit counter (BC0–BC2)
These bits decide the number of bits for the next 1-byte data to be
transmitted. An interrupt request signal occurs immediately after the
number of bits specified with these bits are transmitted.
When a START condition is received, these bits become “000
2” and
the address data is always transmitted and received in 8 bits.
(2) Bit 3: I
2
C-BUS interface use enable bit (ESO)
This bit enables usage of the multimaster I
2
C BUS interface. When
this bit is set to “0,” interface is in the disabled status so the SDA and
the SCL become high-impedance. When the bit is set to “1,” use of
the interface is enabled.
When ESO = “0,” the following is performed.
• PIN = “1,” BB = “0” and AL = “0” are set (they are bits of the I
2
C
status register at address 00D916 ).
•Writing data to the I
2
C data shift register (address 00D716) is dis-
abled.
(3) Bit 4: data format selection bit (ALS)
This bit decides whether or not to recognize slave addresses. When
this bit is set to “0,” the addressing format is selected, so that ad-
dress data is recognized. When a match is found between a slave
address and address data as a result of comparison or when a gen-
eral call (refer to “8.6.5 I
2
C Status Register,” bit 1) is received, trans-
mission processing can be performed. When this bit is set to “1,” the
free data format is selected, so that slave addresses are not recog-
nized.
(4) Bit 5: addressing format selection bit (10BIT SAD)
This bit selects a slave address specification format. When this bit is
set to “0,” the 7-bit addressing format is selected. In this case, only
the high-order 7 bits (slave address) of the I
2
C address register (ad-
dress 00D816) are compared with address data. When this bit is set
to “1,” the 10-bit addressing format is selected and all the bits of the
I
2
C address register are compared with the address data.
(5) Bits 6 and 7: connection control bits between
I
2
C-BUS interface and ports
(BSEL0, BSEL1)
These bits control the connection between SCL and ports or SDA
and ports (refer to Figure 8.6.5).
Fig. 8.6.5 Connection Port Control by BSEL0 and BSEL1
Note: Set the corresponding direction register to “1” to use the
port as multi-master I
2
C-BUS interface.
“
0
”
“
1
”
B
S
E
L
0
SCL1/P1
1
SCL2/P1
2
“0”
“1” BSEL1
“
0
”
“
1
”
B
S
E
L
0
SDA1/P1
3
SDA2/P1
4
“
0
”
“
1
”
B
S
E
L
1
M
u
l
t
i
-
m
a
s
t
e
r
I
2
C
-
B
U
S
i
n
t
e
r
f
a
c
e
S
C
L
SDA
- 1. DESCRIPTION 0
- 2. FEATURES 0
- 3. APPLICATION 0
- REJ03B0134-0100Z 1
- Address 00E016 2
- Addresses 00DE16 and 00DF16 2
- Addresses 00E116 and 00E216 3
- Address 00E416 3
- Addresses 00E616 to 00E916 4
- Address 00E516 4
- Address 00EA16 5
- Addresses 00EC16 5
- Address 00ED16 6
- Addresses 00EE16 6
- Address 00EF16 7
- Addresses 00F416 7
- Address 00F516 8
- Addresses 00F916 8
- Address 00FB16 9
- Addresses 00FC16 9
- Address 00FD16 10
- Addresses 00FE16 10
- Address 00FF16 11
- Addresses 021B16 11
- 42P2R-A/E 13
- REVISION HISTORY 14
- RENESAS SALES OFFICES 15
- 8. FUNCTION BLOCK DESCRIPTION 16
- 8.1.1 CPU Mode Register 16
- RCR1 RCR0 21
- TABLE OF CONTENTS 24
- (4) Serial I/O interrupt 25
- (5) f(XIN)/4096 interrupt 25
- (6) Multi-master I 25
- C-BUS interface interrupt 25
- (7) BRK instruction interrupt 25
- 8.4 TIMERS 29
- 8.4.1 Timer 1 29
- 8.4.2 Timer 2 29
- 8.4.3 Timer 3 29
- 8.4.4 Timer 4 29
- Timer 34 Mode Register 30
- 8.5 SERIAL I/O 32
- 16), and the transfer 33
- OUT pin. Transfer 33
- 4. PIN CONFIGURATION 35
- Outline 42P4B 35
- Outline 42P2R-A/E 35
- 8.6 MULTI-MASTER I 37
- C-BUS INTERFACE 37
- C Data Shift Register 38
- C Address Register 39
- 16) is used to set ACK 40
- C Control Register 42
- (1) 7-bit addressing format 47
- (2) 10-bit addressing format 47
- (5) Writing to I 50
- C status register 50
- 8.8 A-D COMPARATOR 56
- 5. FUNCTIONAL BLOCK DIAGRAM 57
- 8.9 D-A CONVERTER 59
- 8.10 ROM CORRECTION FUNCTION 61
- 8.11 OSD FUNCTIONS 62
- OSD Control Register 65
- 8.11.1 Display Position 66
- 6. PERFORMANCE OVERVIEW 68
- Vertical Position Register i 69
- Horizontal Position Register 70
- 8.11.2 Character Size 71
- 8.11.3 Clock for OSD 73
- 8.11.4 Memory for OSD 74
- Border Selection Register 80
- 8.11.7 Multiline Display 81
- 8.11.8 OSD Output Pin Control 82
- 8.13. RESET CIRCUIT 85
- 8.14 CLOCK GENERATING CIRCUIT 86
- 8.17 ADDRESSING MODE 87
- 8.18 MACHINE INSTRUCTIONS 87
- 9. TECHNICAL NOTES 87
- 8.16 AUTO-CLEAR CIRCUIT 87
- 10. ABSOLUTE MAXIMUM RATINGS 88
- 7. PIN DESCRIPTION 90
- + Power source voltage 91
- 15. MULTI-MASTER I 92
- 16. PROM PROGRAMMING METHOD 93
- M37221EASP 95
- M37221EAFP 95
- 19. APPENDIX 96
- Pin Configuration (TOP VIEW) 96
- Memory Map 98
- Register (SFR) 100
- Program Counter at Reset 104
- Structure of Register 105
- Address 00C716 106
- Address 00CB16 107
- Address 00CD16 107
- Address 00D516 108
- Address 00D616 108
- Address 00D816 109
- Address 00D716 109
- Address 00D916 110
- Address 00DA16 110
- Address 00DB16 111
- Address 00DC16 111
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