DIRECTV Set-Top Box Information for the Installer
DIRECTV, Inc.
March 5, 2008
Version 2.2
Page 15 of 42
DTV-MD-0058
4.7 STB Command Prefix
0xFA
Required Command Prefix, precedes all commands
4.8 STB Responses
Table 4-5: STB Responses List
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