pdi1394l40 NXP Semiconductors, pdi1394l40 Datasheet - Page 57

• Manufacturer Part Number: pdi1394l40
• Description: 1394 Enhanced Av Link Layer Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
13.2.6 Isochronous Transmitter Control Register (ITXCTL) – Base Address: 0x34
Reset Value 0x00000000
Bit 15..14:
Bit 13..8:
Bit 5..4:
Bit 0
13.2.7 Isochronous Transmitter Memory Status (ITXMEM) – Base Address: 0x038
The AV Transmitter Memory Status register reports on the condition of the internal memory buffer used to store incoming AV data streams
before transmission over the 1394 bus. This register is used primarily for diagnostics; several memory status flags are also available in the
ITXINTACK register.
Reset Value 0x00000003
BIT 6:
Bit 5:
Bit 4:
Bit 3:
Bit 2:
Bit 1:
Bit 0:
2000 Dec 15
1394 enhanced AV link layer controller
R/W
R/W
R/W
R
R
R
R
R
R
R
R
Tag: Tag code to insert in isochronous bus packet header. Should be ‘01’ for IEC 61883 International Standard data.
Channel: Isochronous channel number.
Speed: Cable transmission speed (S100, S200, S400).
SY: Sync code to insert in SY field of isochronous bus packet header. This bit reflects the value of the AVx SY pin
and is synchronized with the data payload that was associated with it.
ITXM100LFT: 100 or less quadlets of storage available.
ITXM256LFT: Memory has 256 quadlets of space remaining before becoming full.
ITXM512LFT: Memory has 512 quadlets of space remaining before becoming full.
ITXMF: memory is completely full, no storage available.
ITXMAF: almost full, exactly one quadlet of storage available.
ITXM5AV: at least 5 more quadlets of storage available.
ITXME: memory bank is empty (zero quadlets stored).
31 30
3130
00 = 100Mbs
01 = 200Mbs
10 = 400Mbs
11 = reserved
29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
TAG
54
CHANNEL
SPD
SV01844
SV01056
PDI1394L40
Preliminary specification