p87c770 ETC-unknow, p87c770 Datasheet - Page 17

• Manufacturer Part Number: p87c770
• Description: Microcontrollers Ntsc With On-screen Display Closed Caption
• Manufacturer: ETC-unknow

Philips Semiconductors
Table 12 Selection of SCL frequency in Master mode
10.4
S1STA is an 8-bit read-only Special Function Register. The contents of S1STA may be used as a vector to a service
routine. This optimizes response time of the software and consequently that of the I
possible modes of the I
Table 15.
Table 13 Status Register (SFR address D9H)
Table 14 Description of S1STA bits
Table 15 Abbreviations used in Table 16
1999 Jun 11
Microcontrollers for NTSC TVs with On-Screen
Display (OSD) and Closed Caption (CC)
CR2
SC4
0
0
0
0
1
1
1
1
7
Status Register (S1STA)
SYMBOL
7 to 3
2 to 0
DATA
ACK
ACK
MST
REC
TRX
SLA
SLV
BIT
W
R
CR1
SC3
0
0
1
1
0
0
1
1
6
2
C-bus interface are given in Table 16. The abbreviations used in Table 16 are defined in
SC4 to SC0
7-bit slave address
read bit
write bit
acknowledgment (Acknowledge bit = 0)
not acknowledge (Acknowledge bit = 1)
8-bit byte to or from the I
master
slave
transmitter
receiver
SYMBOL
CR0
SC2
0
1
0
1
0
1
0
1
5
5-bit status code; see Table 16.
These 3 bits are held LOW.
SC1
4
f
osc
2
C-bus
DIVISOR
1600
3200
240
160
120
60
40
30
17
SC0
3
DESCRIPTION
DESCRIPTION
BIT RATE (kHz) at f
2
0
2
C-bus. The status codes for all
P8xCx70 family
3.75
200
300
400
100
7.5
50
75
1
0
Product specification
osc
= 12 MHz
0
0