DIRECTV Set-top box information for the installer
DIRECTV Proprietary
November 17, 2005
Version 1.1.a
Page 16 of 49
DTV-MD-0058
4.4 STB Command Prefix
0xFA
Required Command Prefix, precedes all commands
4.5 STB Responses
Response
Code
Response Label
Description
0xF0 ACK_CMD Command
Acknowledge
0xF1 NACK_CMD
Command
Unknown
0xF2
ACK_PARAMS
Parser received the correct number of parameters
0xF3
NACK_PARAMS
Parser timed out when receiving parameters
0xF4
ACK_FCNOK
Service command completed successfully
0xF5
NACK_FCNOK
Service command completed unsuccessfully
0xF6
ACK_RESET
Command parser reset - break condition detected
0xF7
NACK_BUSY
A previous service command is pending completion
0xF9
NACK_INUSE
Command parser in use by another device
0xFB
NACK_PREFIX
Expected Prefix, prefix not sent
0xFD
DATA_ERROR
Command parser reset – Communication data error
0xFF
CMDBUF_OVFL
Command parser reset – Command buffer