saa569x NXP Semiconductors, saa569x Datasheet - Page 47

• Manufacturer Part Number: saa569x
• Description: Enhanced Tv Microcontrollers With On-screen Display Osd
• Manufacturer: NXP Semiconductors

Philips Semiconductors
17 I
The I
serial clock line (SCL). The definition of the I
protocol can be found in “The I
(including specification) ”. Philips document ordering
number 9398 393 40011.
The device operates in four modes:
The microcontroller peripheral is controlled by the Serial
Control SFR (S1CON) and its status is indicated by the
Status SFR (S1STA). Information is transmitted/received
to/from the I
Slave Address SFR (S1ADR) is used to configure the
slave address of the peripheral.
The byte level I
serial port on the P8xC558, except for the clock rate
selection bits CR<2:0>. The operation of the subsystem is
described in detail in the “P8xC558 data sheet”.
17.1
Three different I
be configured using the ROMBK SFR (IIC_LUT<1:0>), as
shown in Table 17.
17.1.1
This option accommodates the P8xC558 I
“Handbook IC20, 80C51-Based 8-Bit Microcontrollers” .
The various serial rates are shown in Table 17:
Table 17 I
2002 May 06
CR2 CR1 CR0
Master transmitter
Master receiver
Slave transmitter
Slave receiver.
Enhanced TV microcontrollers with
On-Screen Display (OSD)
0
0
0
0
1
1
1
1
2
2
C-BUS SERIAL I/O
C-bus consists of a serial data line (SDA) and a
I
2
C-bus modes
N
0
0
1
1
0
0
1
1
2
OMINAL MODE
C-bus serial rates in ‘P8xC558 nominal mode’
2
C-bus using the Data SFR (S1DAT). The
2
C-bus serial port is identical to the I
2
0
1
0
1
0
1
0
1
C-bus selection tables for CR<2:0> can
DIVISOR
12 MHz
(IIC_LUT<1:0> = 00)
1600
3200
240
160
120
60
40
30
2
C-bus and how to use it
FREQUENCY (kHz)
I
2
C-BUS BIT
2
C-bus, refer to
3.75
200
300
400
100
2
7.5
50
75
C-bus
2
C-bus
47
17.1.2
This option accommodates the P8xC558 I
rates, as shown in Table 18.
Table 18 I
17.1.3
This option accommodates the P8xC558 I
divided by 2, see Table 19.
Table 19 I
17.2
Two I
SCL1/SDA1. The ports are selected by using TXT21.I
Port 0 and TXT21.I
information transmitted from the device goes onto the
enabled port. Information transmitted to the device can
only be acted on if the port is enabled.
If both ports are enabled, then data transmitted from the
device is seen on both ports. However, data transmitted to
the device on one port cannot be seen on the other port.
CR2 CR1 CR0
CR2 CR1 CR0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
2
C-bus ports are available: SCL0/SDA0 and
I
2
C-bus port selection
F
S
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
AST MODE
2
LOW MODE
2
C-bus serial rates in ‘P8xC558 fast mode’
C-bus serial rates ‘P8xC558 slow mode’
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
2
C Port 1. When a port is enabled, any
(IIC_LUT<1:0> = 01)
’ (IIC_LUT<1:0> = 10)
DIVISOR
DIVISOR
12 MHz
12 MHz
1600
3200
6400
SAA567x; SAA569x
800
120
120
480
320
240
30
20
15
80
60
80
60
Objective specification
FREQUENCY (kHz)
FREQUENCY (kHz)
I
I
2
2
C-BUS BIT
C-BUS BIT
2
2
C-bus doubled
C-bus rates,
1.875
3.75
37.5
400
600
800
100
150
200
100
150
200
7.5
15
25
50
2
C