TSB14C01
5-V IEEE 1394-1995 BACKPLANE TRANSCEIVER/ARBITER
SLLS231B – MARCH 1996 – REVISED MAY 1997
D
D
D
D
D
D
Supports Provisions of IEEE 1394-1995
(1394) Standard for High-Performance
Serial Bus
†
Fully Interoperable With FireWire™
Implementation of 1394
Provides A Backplane Environment That
Supports 50 or 100 Megabits per Second
(Mbits/s)
Logic Performs System Initialization and
Arbitration Functions
Encode and Decode Functions Included for
Data-Strobe Bit-Level Encoding
Incoming Data Resynchronized to Local
Clock
D
D
D
D
D
D
Separate Transmitter and Receiver for
Greater Flexibility
Data Interface to Link-Layer Controller
(Link) Provided Through Two Parallel
Signal Lines at 25/50 MHz
100-MHz or 50-MHz Oscillator Provides
Transmit, Receive-Data, and Link Clocks at
25/50 MHz
Single 5-V Supply Operation
Packaged in a High-Performance 64-Pin
TQFP (PM) Package for 0°C to 70°C
Operation
Packaged in a 68-Pin CFP (HV) Package for
– 55°C to 125°C Operation
description
The TSB14C01 provides the transceiver functions needed to implement a single port node in a backplane-
based 1394 network. The TSB14C01 provides two terminals for transmitting, two terminals for receiving, and
a single terminal to externally control the drivers for data and strobe. The TSB14C01 is not designed to drive
the backplane directly, this function must be provided externally. The TSB14C01 is designed to interface with
a link-layer controller (link), such as the TSB12C01A.
The TSB14C01 requires an external 98.304-MHz or 49.152-MHz reference oscillator input for S100/50
operation. The reference signal is internally divided to provide the 49.152-MHz
±100-ppm
system clock signals
used to control transmission of the outbound encoded strobe and data information. The 49.152-MHz clock
signal is supplied to the associated link for synchronization of the two chips, when this device is in the S100 mode
of operation, OSC_SEL is asserted high. When the TSB14C01 is in the S50 mode of operation, the clock rate
supplied to the link is 24.576 MHz.
Data bits to be transmitted are received from the link on two parallel paths and are latched internally in the
TSB14C01 in synchronization with the 49.152-MHz system clock. These bits are combined serially, encoded,
and then transmitted at 98.304-Mbits/s (in S100 mode) as the outbound data-strobe information stream. During
transmission, the encoded data information is transmitted on TDATA, and the encoded strobe information is
transmitted on TSTRB.
During packet reception the encoded information is received on RDATA and strobe information on RSTRB. The
received data-strobe information is decoded to recover the receive clock signal and the serial data bits. The
serial data bits are split into two parallel streams, resynchronized to the local system clock, and sent to the
associated link.
The TSB14C01 is a 5-V device and provides CMOS-level outputs.
AVAILABLE OPTIONS
PACKAGES
TA
0°C to 70°C
– 55°C to 125°C
CERAMIC FLAT PACK
(HV)
—
TSB14C01MHV
THIN QUAD FLAT PACK
(PM)
TSB14C01PM
—
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
† This serial bus implements technology covered by one or more patents of Apple Computer, Incorporated and SGS Thomson, Limited.
FireWire is a trademark of Apple Computer, Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
©
1997, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
TSB14C01
5-V IEEE 1394-1995 BACKPLANE TRANSCEIVER/ARBITER
SLLS231B – MARCH 1996 – REVISED MAY 1997
Terminal Functions
TERMINAL
NAME
ARB_CLK
PM
NO.
1
HV
NO.
11
TYPE
TTL
I/O
O
DESCRIPTION
Arbitration clock. ARB_CLK is the clock used for arbitration. ARB_CLK is
for test and debug. It can be put into a high-impedance state by
PTEST_INDRV. This terminal is not used in normal operation and is
always at 49.152 MHz.
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ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
CTL0, CTL1
13, 14
23, 24
TTL
I/O
Control I/O. These are bidirectional signals that communicate between the
TSB14C01 and the link that control passage of information between the
two devices.
Data I/O. These are bidirectional information signals that communicate
between the TSB14C01 and the link.
D0, D1
15, 16
4
25, 26
14
30
TTL
TTL
TTL
I/O
I
I
ENA_PRI
EN_EXID
Enable priority. ENA_PRI is tied low to enable the 7-bit bus request. See
Table 1 for more information.
18
Enable external ID. When EN_EXID is asserted high, the ID for this node
is set externally by EX_ID. When this terminal is tied/driven low, the
source of the ID comes from the internal ID register.
Enable external priority. When EN_EXPRI is asserted high (external
priority enabled) the priority level for this node is set externally (see
Table 1). This terminal should be tied low when not used.
EN_EXPRI
19
31
TTL
I
EX_ID5 – EX_ID0
EX_PRI3 –
EX_PRI0
GND
20,21,22,
23,24,25
27,28,
29,30
32,33,34,
35,36,37
39,40,
41,42
TTL
TTL
I
I
External ID. The ID for this node is determined by the value on the EX_ID
terminals. Bit 0 is the MSB.
External priority. The priority for this node is determined by the values on
the EX_PRI terminals. See Table 1 for more information.
Circuit ground
7,12,26,
36,38,49,
51,54,60,
64
8
4,8,17,
22,38,48,
50,61,63,
66
18
Supply
—
LREQ
VCC
TTL
I
Link request input. LREQ is an input from the link used by the link to
signal the TSB14C01 of a request to perform some service.
Circuit power
3,5,9,17,
34,41,57,
59,61,62
1,3,5,6,
13,15,19,
29,46,53
Supply
—
NC
31,32,33,
44,45,46,
47,48,53,
56
37
6
9,10,27,
28,43–45,
56–60,
65,68
49
16
62
—
—
Not connected. These terminals must be left floating.
N_OEB_D
N_POR
TTL
TTL
O
I
I
External driver enable. N_OEB_D is a negative active signal that enables
the external driver for TDATA and TSTRB.
Logic reset input . Forcing N_POR low causes a reset condition and
resets the internal logic to the reset start state.
OSC_SEL
50
VCC /
GND
TTL
Select clock frequency. OSC_SEL should be pulled up to VCC when the
operating frequency is 50 MHz. When the operating frequency is 100 MHz
then it should be pulled to ground. It should not be left floating
.
PHYENA
2
12
O
Phy enable. When the phy is driving it is low, PHYENA is the control to the
CTL0, CTL1, D0, and D1 drivers. PHYENA is for test and debug. It can
be put into a high-impedance state by PTEST_INDRV. This terminal is not
used in normal operation.
Test output enable. PTEST_INDRV enables/disables the drivers to the
test terminals ARB_CLK, PHYENA, and RPREFIX. During normal
operation, PTEST_INDRV should be tied to VCC to disable the drivers.
Receive data. Incoming data is received at the data rate.
PTEST_INDRV
35
47
TTL
I
RDATA
43
55
TTL
I
POST OFFICE BOX 655303
•
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5
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