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| 型號： | PCA5010 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Pager baseband controller |
| 中文描述： | 傳呼機基帶控制器 |
| 文件頁數(shù)： | 24/112頁 |
| 文件大小： | 627K |
| 代理商： | PCA5010 |
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1998 Nov 02
24
Philips Semiconductors
Product specification
Pager baseband controller
PCA5010
6.8.6
S
ERIAL
S
TATUS
R
EGISTER
(S1STA)
The contents of this register may be used as a vector to a service routine. This optimizes the response time of the
software and consequently that of the I
2
C-bus. S1STA is a read-only register. The status codes for all available modes
of a single master I
2
C-bus interface are given in Tables 12 to 14.
Table 10
Serial Status Register (S1STA and SFR address D9H)
Table 11
Description of the S1STA bits
Table 12
MST/TRX mode
Table 13
MST/REC mode
Table 14
Miscellaneous
7
6
5
4
3
2
1
0
SC4
SC3
SC2
SC1
SC0
0
0
0
BIT
SYMBOL
FUNCTION
S1STA.3 to S1STA.7
S1STA.0 to S1STA.2
SC4 to SC0
5-bit status code
these 3 bits are held LOW
S1STA VALUE
DESCRIPTION
08H
10H
18H
20H
28H
30H
a START condition has been transmitted
a repeated START condition has been transmitted
SLA and W have been transmitted, ACK has been received
SLA and W have been transmitted, ACK received
DATA of S1DAT has been transmitted, ACK received
DATA of S1DAT has been transmitted, ACK received
S1STA VALUE
DESCRIPTION
40H
48H
50H
58H
SLA and R have been transmitted, ACK received
SLA and R have been transmitted, ACK received
DATA has been received, ACK returned
DATA has been received, ACK returned
S1STA VALUE
DESCRIPTION
78H
no information available (reset value); the serial interrupt flag SI, is not yet set
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