ks8701 Samsung Semiconductor, Inc., ks8701 Datasheet - Page 51

• Manufacturer Part Number: ks8701
• Description: Flextm Roaming Decoder Ii
• Manufacturer: Samsung Semiconductor, Inc.

Decoder-to-Host Packet Descriptions
RECEIVER SHUTDOWN PACKET
host that the receiver is turned off and how much time there is until the KS8701 will automatically turn it back on.
Table 27: Receiver Shut Down Packet Bit Assignments
50
The Shutdown Packet is sent in both synchronous and asynchronous mode. It is designed to indicate to the
FNV: Frame Number Valid. This bit is set if the last decoded frame info word was correctable and the frame
CF:
TNF:
FCO: Frame Carried On. Set if the KS8701 is decoding the next frame due to the reception of a non-zero
NAF:
Byte 3
Byte 2
Byte 1
Byte 0
number was the expected value. When in asynchronous mode, this value will be 0.
on the negative edge of the READY line when this packet is sent to the host. The value of this field is
valid only if the KS8701 is in synchronous mode and the FIV bit in the status packet is set. When in
asynchronous mode, this value will be 0.
check if the KS8701 were to warm up for the next frame. When in asynchronous mode TNF indicates
the time to the start of the next automatic noise detect. See “Using the Receiver Shutdown Packet” on
page 66 for an explanation on how to use this value. This value is latched on the negative edge of the
READY line when this packet is sent to the host.
carry-on value in a previous frame. When in synchronous mode, this value will be 0.
decode when the receiver shut down. The value of this field is valid only if the KS8701 is in
synchronous mode and the FIV bit in the status packet is set. When in asynchronous mode this value
will be 0.
Current Frame. When in synchronous mode, this is the current frame number. This value is latched
Time to Next Frame. When in synchronous mode TNF indicates the time to the start of the A-word
Next Assigned Frame. This is the frame number of the next frame the KS8701 was scheduled to
TNF
Bit 7
FCO
FNV
0
7
TNF
NAF
Bit 6
CF
1
6
6
6
TNF
NAF
Bit 5
FLEX
CF
1
5
5
5
TM
Roaming Decoder II
NAF
TNF
Bit 4
CF
1
4
4
4
NAF
TNF
Bit 3
CF
1
3
3
3
NAF
TNF
Bit 2
CF
1
2
2
2
TNF
NAF
Bit 1
CF
1
1
1
1
TNF
NAF
Bit 0
CF
KS8701
0
0
0
0