DS_S5T8702 Datasheet, PDF (23/62 Pages) Samsung semiconductor – FEEX ALPHANUMERIC DECODER II

FEEX^TM ALPHANUMERIC DECODER II
S5T8702
RECEIVER CONTROL CONFIGURATION PACKETS
These packets allow the host to configure what setting is applied to the receiver control lines SO-S7, how long to
apply the setting, and when to read the value of the LOBAT input pin. For a more detailed description of how the
S5T8702 uses these settings see "Receiver Control" on page 48. The S5T8702 defines 12 different receiver
control settings. Proper operation is not guaranteed if these settings are changed when decoding is enabled (i.e.
the ON bit in the Control Packet is set). The IDs for these packets range from 16 to 27 (decimal).
Receiver Off setting Packet
Byte 3
Byte 2
Byte 1
Byte 0
Table 11: Receiver Off setting Packet Bit Assignments
Bit 7
0
0
CLS₇
ST₇
Bit 6
0
0
CLS₆
ST₆
Bit 5
0
0
CLS₅
ST₅
Bit 4
1
0
CLS₄
ST₄
Bit 3
0
LBC
CLS₃
ST₃
Bit 2
0
0
CLS₂
ST₂
Bit 1
0
0
CLS₁
ST₁
Bit 0
0
0
CLS₀
ST₀
LBC:
CLS:
ST:
Low Battery Check. If this bit is set, the S5T8702 will check the status of the LOBAT port just
before leaving this receiver state. (value after reset=0)
Control Line Setting. This is the value to be output on the receiver control lines (S0 - S7) for this
receiver state. (value after reset=0)
Step Time. This is the time the S5T8702 is to keep the receiver off before applying the first warm
up state's receiver control value to the receiver control lines. The setting is in steps of 625us. Valid
values are 625us (ST=01) to 159.375ms (ST=FF in hexadecimal). (value after reset=625us)
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