
IBM39STB0210x
Advance
STB0210x Digital Set-Top Box Integrated Controllers
STB02_sds_0327.fm.01
March 27, 2000
Pin and I/O Information
Page 27 of 39
STB0210x Multiplexed I/O Signal Table
STB0210x has four sets of multiplexed I/O signals: Mux0, Mux1, Mux2, and Mux3. At reset, the
multiplexed I/O signals are tristated, unless noted.
The muxtiplexed I/O can be selected by column in the following tables. For example, if Input/Output 1 is
selected, Input/Output 2 and Input/Output 3 are not available.
Blank entries indicate reserved multiplexing.
Multiplexed I/O Signal Table - Mux1
Bit #
Input/Output 1
I/O
Input/Output 2
I/O
Input/Output 3
00
EDMAC2_ACK
O
EBM_HOLDACK
I/O
IDE_REQ
I
01
EDMAC2_REQ
I
EBM_HOLDREQ
I/O
IDE_ACK
O
02
EDMAC2_EOT
I/O
EBM_BUSREQ
I/O
Multiplexed I/O Signal Table - Mux2
Bit #
Input/Output 1
I/O
Input/Output 2
I/O
00
SERIAL0/16550_TXD
O
SSP_TXD
O
01
SERIAL0/16550_RXD
I
SSP_RXD
I
02
SERIAL0/16550_CTS
I
SSP_CLK
I
03
SERIAL0/16550_RTS
O
SSP_FS
I/O
Multiplexed I/O Signal Table - Mux3
Bit #
Input/Output 1
I/O
Input/Output 2
I/O
Input/Output 3
I/O
Input/Output 4
I/O
00
HSP_DATA0
O
SERIAL1/INFRARE
D_DSR
(through GPIO bit 31
alt rcv 2)
I
01
HSP_DATA1
O
SERIAL1/INFRARE
D_DTR
O
02
HSP_DATA2
O
RW_TMS
(through GPIO bit 11
alt rcv 1
I
RT_TS1E
O
03
HSP_DATA3
O
RW_TDI
(through GPIO bit 12
alt rcv 1)
I
RT_TS2E
O
04
HSP_DATA4
O
RW_TCK
(through GPIO bit 13
alt rcv 1)
I
RT_TS3
O
05
HSP_DATA5
O
RW_TDO
O
RT_TS4
O