參數資料
型號: ZR36504
廠商: Electronic Theatre Controls, Inc.
英文描述: Video & Audio Interface solution via USB
中文描述: 視頻
文件頁數: 24/74頁
文件大?。?/td> 298K
代理商: ZR36504
ZORAN Corporation
USBvision II Data Decoder
ZR36505 Data Sheet
November-99
Page 24 of 24
d6: SLOW_CLK12 '1' Select 12MHz for Horiz. blank
d7: SLOW_CLK16 '1' Select 16MHz for Horiz. blank
d5: '0' reserved.
Audio & Bulk-Data Port Read/Write Registers:
Reg.
Address
50
AUDIO_CONT
Reg. Name
Function
Default
Value
00H
d0: E_A - Enable Audio channel ('1' enables, '0' disables)
d1: E_B - Enable Bulk-Data port ('1' enables, '0' disables)
d3-d2: BPS - bits/samp: 00: 8b, 01: 12b, 10: 14b, 11: 16b
d4: S/M - Select Stereo/Mono. '0': Mono, '1': Stereo.
d5: FS - Audio Samp.Rate: '0': 8Ks/sec, '1': 16Ks/sec.
d7-d6: BK - Bit-Clk Freq: 1: 64, 2: 1544, 3: 2048 [KHz]
d7-d0: Max. number of bytes in Audio packet (0 to 128).
d6-d0: Max. number of bytes in Bulk packet (0 to 64).
d7: '0' reserved.
51
52
AUD_PK_LEN
BLK_PK_LEN
00H
00H
USB Watch-Dog Register:
Reg.
Address
53
Reg. Name
Function
Default
Value
00H
WD_COUNT
d7-d0: USB_frame Watch-Dog delay parameter. A value
0x00 produces a 686 micro-seconds delay. A value of 0xE9
produces a 996 micro-seconds delay. Any value between
these two values affects the delay in steps of 1.33 micro-
seconds. Values bigger than 0xE9 have no effect.
Compression Ratio Management Registers (Continued):
Reg.
Address
56
PCM_THR1
57
PCM_THR2
58
DIST_THR_I
59
DIST_THR_A
60
MAX_DIST_I
61
MAX_DIST_A
62
VID_BUF_
LEFT
Reg. Name
Function
Default
Value
00H
00H
00H
00H
00H
00H
00H
d7-d0: PCM Threshold 1 (unsigned 0-255)
d7-d0: PCM Threshold 2 (unsigned 0-255)
d7-d0: DIST_THR_I (Distortion. Threshold for Inter)
d7-d0: DIST_THR_I (Distortion. Threshold for Intra)
d7-d0: MAX_DIST (Maximum Distortion for Inter)
d7-d0: MAX_DIST (Maximum Distortion for Intra)
d7-d0: Space left in ZR36504 DRAM buffer for compressed
video data (given in units of 2KB).
Read-Only Register.
d7-d0: bits 10-3 of LAST_FRM_PNTR (DRAM pointer).
Read-Only Register.
d6-d0: bits 17-11 of LAST_FRM_PNTR (DRAM pointer)
d7: RAM_FULL ('1' if event occurred from last Read).
Read-Only Register.
d1-d0: VID_BUF_LEFT[9..8]. Ext. for 16Mbit DRAM.
d3-d2: LPF[19..18]. Extension for 16Mbit DRAM.
d7-d4: '0000' reserved.
Read-Only Register.
63
LFP_LSB
00H
64
LFP_MSB
00H
65
VID/LPF
00H
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